Questions on UI for ASP.NET AJAX Forum

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I have a hierarchical tab, by default this is how my tab structure is rendered,

Tab1 Tab2 Tab3 Tab4
Tab1.1 Tab1.2 Tab1.3 Tab1.4
Tab1.1.1 Tab1.1.2

but in page load I want my tab to render this way, and want Tab2.7.1 selected,

Tab1 Tab2 Tab3 Tab4
Tab2.1 Tab2.2 Tab2.3 Tab2.4 Tab2.5 Tab2.6 Tab2.7
Tab2.7.1 Tab2.7.2 Tab2.3

Please do help me in solving this issue.

TabStrip

answered on 11 Jun 2009

1 answer

307 views

Adding columns in page_init but getting Multiple Controls With The Same ID

Hi,

I'm using RadControls for ASP.NET AJAX Q1 2009

I have a radgrid using NeedDataSource to bind to a dynamicallyt created datasource, depending on columns the user has selected. The grid is created in page_init as recommended to me.

I dynamically create the grid columns myself. One fo these columns is a template column containing a radeditor. I was advised to create columns, especially templated columns, in page_init. When I do this though, I get

Multiple controls with the same ID 'FilterTextBox_tblT1Devices.Name' were found. FindControl requires that controls have unique IDs.

If I create the columns in page load I don't get this message but my template column will disappear after postback as expected, because it's viewstate is not saved.

Another issue is my dynamically created dropdown columns are completely blank no matter what way I configure them. I have had problems with them for days. I'm hoping their problem might be related.

Please advise.

Relevant code :

    
                Protected Sub Page_Init(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Init  
        
                    ' If loading for the first time...  
        
                    'Create the Grid  
        
                    Dim grid As New RadGrid()  
        
                    grid.ID = "gridServers" 
        
                    grid.Skin = "Default" 
        
                    grid.PageSize = 100  
        
                    grid.AllowPaging = True 
        
                    grid.AllowFilteringByColumn = True 
        
                    grid.AllowSorting = True 
        
                    grid.ShowGroupPanel = True 
        
                    grid.PagerStyle.Mode = GridPagerMode.NextPrevAndNumeric  
        
                    grid.AutoGenerateColumns = False 
        
                    grid.CssClass = "gridServers" 
        
                    AddHandler grid.ColumnCreated, AddressOf gridServers_ColumnCreated  
        
                    AddHandler grid.NeedDataSource, AddressOf gridServers_NeedDataSource  
        
                    gridServersHere.Controls.Add(grid)  
        
                    ' Initialize the page  
        
                    Initialize()          
        
                    rptColumnSelector.DataSource = Session("showColumns")  
        
                    rptColumnSelector.DataBind()  
        
                    PrepareGridColumns()  
        
                End Sub 
        
                Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load  
        
                    ' If loading for the first time...  
        
                    If Not Page.IsPostBack Then 
        
                        ' Initialize the page  
        
                        'Initialize()  
        
                        'PrepareGridColumns()  
        
                        rptColumnSelector.DataSource = Session("showColumns")  
        
                        rptColumnSelector.DataBind()  
        
                        'gridServers.DataBind()              
        
                    End If 
        
                End Sub 
        
                Protected Function getDataString() As String 
        
                    Dim columnList As Data.DataTable = Session("showColumns")  
        
                    Dim selectStr As String = "" 
        
                    Dim joinstr As String = "" 
        
                    Dim column As Data.DataRow  
        
                    Dim i = 0  
        
                    selectStr = "select tblT1Devices.DeviceID as [Device ID], tblT2Configuration.EnvironmentID as [ThisID] " 
        
                    'build a comma-delimited list of columns that will make up the SQL Query.  
        
                    'Dont put a comma after the last one.  
        
                    If columnList Is Nothing Then 
        
                        Initialize()  
        
                        columnList = Session("showColumns")  
        
                    End If 
        
                    For Each column In columnList.Rows  
        
                        ' Process only the checked columns.  
        
                        If column("Checked") = True Then 
        
                            selectStr = selectStr + ", " + column("FullName") + " as [" + column("FullName") + "]" 
        
                            ' Commented out at the moment. We are doing the simple version above.  
        
                            '                Select Case column("LookupTable")  
        
                            ' If this is a straight forward field :  
        
                            '                   Case ""  
        
                            '              selectStr = selectStr + ", " + column("FullName") + " as [" + column("FullName") + "]"  
        
                            'Otherwise is must be a lookup ID :  
        
                            '                 Case Else  
        
                            '            selectStr = selectStr + ", "  
        
                            '           selectStr = selectStr + column("TABLE_NAME") + column("COLUMN_NAME") + "." + column("LookupValue") + " as [" + column("FullName") + "]"  
        
                            'Join Str is a string we're contructing of SQL Joins, while we'rein the same loop. This will be tagged on the end of  
        
                            'selectstr after this loop.  
        
                            '          joinstr = joinstr + " left join " + column("LookupTable") + " as " + column("TABLE_NAME") + column("COLUMN_NAME")  
        
                            '         joinstr = joinstr + " on " + column("TABLE_NAME") + column("COLUMN_NAME") + "." + column("LookupID") + " = " + column("FullName")  
        
                            '        End Select  
        
                        End If 
        
                        'If i < columnCount Then selectStr = selectStr + ","  
        
                        'i += 1  
        
                    Next 
        
                    selectStr = selectStr + " from tblT1Devices left join tblt2configuration on tblT2configuration.deviceID = tblT1Devices.deviceid" 
        
                    selectStr = selectStr + " left join tblt3_MV_Configuration on tblT3_MV_Configuration.deviceID = tblT1Devices.deviceid" 
        
                    'selectStr = selectStr + joinstr  
        
                    Return selectStr  
        
                End Function 
        
                Protected Sub Initialize()  
        
                    Dim column As DataRow  
        
                    Dim ColumnList As Data.DataTable = CreateColumnListDataTable()  
        
                    'A list of Column Names we want to show by default on the Grid:  
        
                    Dim SelectedColumns As String() = {"tblT1Devices.Name", "tblT1Devices.Domain"}  
        
                    Dim selectColumn As String 
        
                    'Get all available columns from the SP  
        
                    Dim ConnString As String = ConfigurationManager.ConnectionStrings("WPG_ADBConnectionString").ConnectionString  
        
                    Dim conn As SqlConnection = New SqlConnection(ConnString)  
        
                    Dim adapter As SqlDataAdapter = New SqlDataAdapter  
        
                    adapter.SelectCommand = New SqlCommand("exec sp_web_Search_GetAvailableColumns", conn)  
        
                    Dim table1 As New DataTable  
        
                    conn.Open()  
        
                    Try 
        
                        adapter.Fill(table1)  
        
                    Finally 
        
                        conn.Close()  
        
                    End Try 
        
                    'We add a column here that will hold whether the column is checked on the GUI  
        
                    'Then Cycle through all the checkboxes and check those that match the default list above   
        
                    Dim myDataColumn As DataColumn  
        
                    myDataColumn = New DataColumn()  
        
                    myDataColumn.DataType = Type.GetType("System.Boolean")  
        
                    myDataColumn.ColumnName = "Checked" 
        
                    table1.Columns.Add(myDataColumn)  
        
                    For Each column In table1.Rows  
        
                        column("Checked") = False ' Check them all to false by default.  
        
                        For Each selectColumn In SelectedColumns  
        
                            If selectColumn = column("FullName") Then 
        
                                column("Checked") = True 'check them to true if in the list above.  
        
                            End If 
        
                        Next 
        
                    Next 
        
                    'Set the FullName Column as the PrimaryKey  
        
                    'Dim Key() As DataColumn  
        
                    'Key(0) = table1.Columns("FullName")  
        
                    'Key(0) = table1.Columns.Item("FullName")  
        
                    'table1.PrimaryKey = Key  
        
                    'For Each item In rpt.Items  
        
                    '        chk = item.FindControl("chkColumn")  
        
                    'chkColumn = chk.ToolTip.Split("-")  
        
                    'For Each selectColumn In SelectedColumns  
        
                    '        If selectColumn = chkColumn(0) Then  
        
                    '        chk.Checked = "true"  
        
                    'End If  
        
                    'Next  
        
                    'Next  
        
                    'update the session variable of checked columns  
        
                    Session("showColumns") = table1  
        
                End Sub 
        
                Protected Sub gridServers_ColumnCreated(ByVal sender As Object, ByVal e As Telerik.Web.UI.GridColumnCreatedEventArgs)  
        
                    Dim ColumnList As DataTable = Session("showColumns")  
        
                    Dim myColumn As DataRow  
        
                    'Go through all columns and perform specific tasks depending on row types.  
        
                    For Each myColumn In ColumnList.Rows  
        
                        'For any columns in the grid that match our datatable of extra column data ... :  
        
                        'If e.Column.UniqueName = myColumn("FullName") Then  
        
                        '            e.Column.HeaderText = myColumn("FriendlyColumnName")  
        
                        'e.Column.HeaderTooltip = e.Column.HeaderTooltip + " - " + myColumn("FullName") & " - " & myColumn("Description")  
        
                        'Detect column types and set to readonly if the column is readonly.  
        
                        'Select Case e.Column.ColumnType  
        
                        '    Case "GridBoundColumn"  
        
                        'Dim boundColumn As GridBoundColumn = CType(e.Column, GridColumn)  
        
                        'boundColumn.ReadOnly = Boolean.Parse(myColumn("Readonly"))  
        
                        'If Not boundColumn.ReadOnly Then e.Column.HeaderStyle.ForeColor = System.Drawing.ColorTranslator.FromHtml("#0269ff")  
        
                        'Case "GridCheckBoxColumn"  
        
                        'Dim boundColumn As GridCheckBoxColumn = CType(e.Column, GridColumn)  
        
                        'boundColumn.ReadOnly = Boolean.Parse(myColumn("Readonly"))  
        
                        'If Not boundColumn.ReadOnly Then e.Column.HeaderStyle.ForeColor = System.Drawing.ColorTranslator.FromHtml("#0269ff")  
        
                        'End Select  
        
                        'Check for Lookup tables and change the column type to dropdowns for editing purposes  
        
                        ' Note that the grid doesnt autodetect this osrt of thing (like checkboxes) so we have to tell it to.  
        
                        ' Otherwise it will just use GridBoundColumn  
        
                        'If a lookup table is specified  
        
                        'If myColumn("Lookuptable") <> "" Then  
        
                        ' e.Column.co()  
        
                        'End If  
        
                        'End If  
        
                        'If the column is the DeviceID, make sure this is readonly as it is the primary key.  
        
                        If e.Column.UniqueName = "Device ID" Then 
        
                            Dim boundColumn As GridBoundColumn = CType(e.Column, GridBoundColumn)  
        
                            boundColumn.ReadOnly = True 
        
                        End If 
        
                    Next 
        
                    ' For edit column  
        
                    If e.Column.ColumnType = "Telerik.Web.UI.GridEditCommandColumn" Then 
        
                    End If 
        
                End Sub 
        
                Protected Sub gridServers_UpdateCommand(ByVal source As Object, ByVal e As Telerik.Web.UI.GridCommandEventArgs)  
        
                    Dim ColumnList As Data.DataTable = Session("showColumns")  
        
                    Dim columnName As Data.DataRow  
        
                    Dim sqlstring = "" 
        
                    Dim w = "Telerik.Web.UI.GridEditFormItem" 
        
                    'Get the GridEditableItem of the RadGrid  
        
                    Dim editedItem As GridEditableItem = TryCast(e.Item, GridEditableItem)  
        
                    'Get the primary key value using the DataKeyValue.  
        
                    Dim DeviceID As String = editedItem.OwnerTableView.DataKeyValues(editedItem.ItemIndex)("Device ID").ToString()  
        
                    Dim sql As SqlDataSource = New SqlDataSource  
        
                    sql.ConnectionString = ConfigurationManager.ConnectionStrings("WPG_ADBConnectionString").ConnectionString  
        
                    'have to put at least one update statement (deviceid = deviceid) so anything added after has a comma before it  
        
                    sqlstring = "Update tblT3_MV_Configuration set DeviceID = " & DeviceID & " " 
        
                    For Each columnName In ColumnList.Rows  
        
                        'only if column is readonly and checked.....  
        
                        If columnName("ReadOnly") <> "true" And columnName("Checked") Then 
        
                            Dim name As String = editedItem(columnName(5)).controls(0).GetType().ToString()  
        
                            Select Case editedItem(columnName("Fullname")).controls(0).GetType().ToString()  
        
                                Case "System.Web.UI.WebControls.TextBox" 
        
                                    sqlstring = sqlstring & ", " & columnName(0) & " = '" & (TryCast(editedItem(columnName("Fullname")).Controls(0), TextBox)).Text & "', " 
        
                                Case "System.Web.UI.WebControls.CheckBox" 
        
                                    sqlstring = sqlstring & ", " & columnName("FullName") & " = '" & (TryCast(editedItem(columnName("Fullname")).Controls(0), CheckBox)).Checked.ToString & "', " 
        
                                Case "System.Web.UI.WebControls.dropdownlist" 
        
                                    sqlstring = sqlstring & ", " & columnName("FullName") & " = '" & (TryCast(editedItem(columnName("Fullname")).Controls(0), DropDownList)).SelectedItem.Value & "', " 
        
                                    'might use this later :  
        
                                    'telerik.Web.UI.RadDateInput  
        
                            End Select 
        
                        End If 
        
                    Next 
        
                    sqlstring = sqlstring & " where DeviceID = " & DeviceID  
        
                    'Will do update here......  
        
                End Sub 
        
                Protected Sub gridServers_NeedDataSource(ByVal source As Object, ByVal e As Telerik.Web.UI.GridNeedDataSourceEventArgs)  
        
                    'Set up grid columns acording to our selected column list  
        
                    'Not any more, do this in Page_init  
        
                    'PrepareGridColumns()  
        
                    Dim gridServers As RadGrid = source  
        
                    Dim value() As String = {"Device ID"}  
        
                    gridServers.DataSource = GetDataTable()  
        
                    gridServers.MasterTableView.DataKeyNames = value  
        
                End Sub 
        
                Public Function GetDataTable() As DataTable  
        
                    Dim ConnString As String = ConfigurationManager.ConnectionStrings("WPG_ADBConnectionString").ConnectionString  
        
                    Dim conn As SqlConnection = New SqlConnection(ConnString)  
        
                    Dim adapter As SqlDataAdapter = New SqlDataAdapter  
        
                    adapter.SelectCommand = New SqlCommand(getDataString(), conn)  
        
                    Dim table1 As New DataTable  
        
                    conn.Open()  
        
                    Try 
        
                        adapter.Fill(table1)  
        
                    Finally 
        
                        conn.Close()  
        
                    End Try 
        
                    Return table1  
        
                End Function 
        
                Public Sub PrepareGridColumns()  
        
                    'This function will generate the columns for the Grid by looping through the checkbox datatable  
        
                    ' Instead of autogenerating, this way I can handpick and identify the dropdown\lookup columns  
        
                    Dim gridServers As RadGrid = gridServersHere.FindControl("gridServers")  
        
                    Dim column As DataRow  
        
                    Dim columnList As DataTable = Session("showColumns")  
        
                    Dim AnyColumnsAreEditable As Boolean = False 
        
                    'Clear Columns  
        
                    gridServers.Columns.Clear()  
        
                    Dim editcol As New GridEditCommandColumn()  
        
                    gridServers.MasterTableView.Columns.Add(editcol)  
        
                    Dim sql1 As New SqlDataSource  
        
                    sql1.ID = "sqlEnv" 
        
                    sql1.ConnectionString = ConfigurationManager.ConnectionStrings("WPG_ADBConnectionString").ConnectionString  
        
                    sql1.SelectCommand = "select * from tblT3Environments" 
        
                    Dim dd As New GridDropDownColumn  
        
                    gridServers.MasterTableView.Columns.Add(dd)  
        
                    dd.ListValueField = "EnvironmentID" 
        
                    dd.ListTextField = "Environment" 
        
                    dd.DataSourceID = sql1.ID  
        
                    dd.HeaderText = "Scooby" 
        
                    dd.DataField = "ThisID" 
        
                    For Each column In columnList.Rows  
        
                        If column("Checked") Then 
        
                            If column("LookupTable") <> "" Then 
        
                                Dim sql As New SqlDataSource  
        
                                sql.ID = "sql" & column("Table_Name") & column("column_Name")  
        
                                sql.ConnectionString = ConfigurationManager.ConnectionStrings("WPG_ADBConnectionString").ConnectionString  
        
                                sql.SelectCommand = "select " & column("LookupID") & ", " & column("LookupValue") & " from " & column("LookupTable")  
        
                                Dim dropdowncol As New GridDropDownColumn  
        
                                gridServers.MasterTableView.Columns.Add(dropdowncol)  
        
                                dropdowncol.ListValueField = column("LookupID")  
        
                                dropdowncol.ListTextField = column("LookupValue")  
        
                                dropdowncol.DataSourceID = sql.ID  
        
                                dropdowncol.HeaderText = column("FriendlyColumnName")  
        
                                dropdowncol.DataField = column("FullName")  
        
                                dropdowncol.UniqueName = column("FullName")  
        
                                dropdowncol.ReadOnly = Boolean.Parse(column("Readonly"))  
        
                                dropdowncol.SortExpression = column("FullName")  
        
                                dropdowncol.Groupable = True 
        
                                dropdowncol.GroupByExpression = column("FullName") + " Group By " + column("FullName")  
        
                            Else 
        
                                If column("DATA_TYPE") = "varchar" Or column("DATA_TYPE") = "nvarchar" Then 
        
                                    Dim boundcol As New GridBoundColumn()  
        
                                    gridServers.MasterTableView.Columns.Add(boundcol)  
        
                                    boundcol.UniqueName = column("FullName")  
        
                                    boundcol.HeaderText = column("FriendlyColumnName")  
        
                                    boundcol.DataField = column("FullName")  
        
                                    boundcol.HeaderTooltip = boundcol.HeaderTooltip.ToString() + " - " + column("FullName") & " - " & column("Description")  
        
                                    boundcol.ReadOnly = Boolean.Parse(column("Readonly"))  
        
                                    boundcol.SortExpression = column("FullName")  
        
                                    boundcol.Groupable = True 
        
                                    boundcol.GroupByExpression = column("FullName") + " Group By " + column("FullName")  
        
                                ElseIf column("DATA_TYPE") = "datetime" Then 
        
                                    Dim datecol As New GridDateTimeColumn()  
        
                                    gridServers.MasterTableView.Columns.Add(datecol)  
        
                                    datecol.UniqueName = column("FullName")  
        
                                    datecol.HeaderText = column("FriendlyColumnName")  
        
                                    datecol.DataField = column("FullName")  
        
                                    datecol.HeaderTooltip = datecol.HeaderTooltip.ToString() + " - " + column("FullName") & " - " & column("Description")  
        
                                    datecol.ReadOnly = Boolean.Parse(column("Readonly"))  
        
                                    datecol.PickerType = GridDateTimeColumnPickerType.DateTimePicker  
        
                                ElseIf column("DATA_TYPE") = "int" Or column("DATA_TYPE") = "bigint" Then 
        
                                    Dim intcol As New GridNumericColumn()  
        
                                    gridServers.MasterTableView.Columns.Add(intcol)  
        
                                    intcol.UniqueName = column("FullName")  
        
                                    intcol.HeaderText = column("FriendlyColumnName")  
        
                                    intcol.DataField = column("FullName")  
        
                                    intcol.HeaderTooltip = intcol.HeaderTooltip.ToString() + " - " + column("FullName") & " - " & column("Description")  
        
                                    intcol.ReadOnly = Boolean.Parse(column("Readonly"))  
        
                                ElseIf column("DATA_TYPE") = "text" Then 
        
                                    Dim tempcol As New GridTemplateColumn()  
        
                                    'The class for this template can be found at the bottom of this code-behind  
        
                                    tempcol.EditItemTemplate = New MyEditBoxTemplate(column("FullName"))  
        
                                    tempcol.UniqueName = column("FullName")  
        
                                    tempcol.HeaderText = column("FriendlyColumnName")  
        
                                    tempcol.DataField = column("FullName")  
        
                                    tempcol.HeaderTooltip = tempcol.HeaderTooltip.ToString() + " - " + column("FullName") & " - " & column("Description")  
        
                                    tempcol.ReadOnly = Boolean.Parse(column("Readonly"))  
        
                                    gridServers.MasterTableView.Columns.Add(tempcol)  
        
                                ElseIf column("DATA_TYPE") = "bit" Then 
        
                                    Dim Checkcol As New GridCheckBoxColumn()  
        
                                    gridServers.MasterTableView.Columns.Add(Checkcol)  
        
                                    Checkcol.UniqueName = column("FullName")  
        
                                    Checkcol.HeaderText = column("FriendlyColumnName")  
        
                                    Checkcol.DataField = column("FullName")  
        
                                    Checkcol.HeaderTooltip = Checkcol.HeaderTooltip.ToString() + " - " + column("FullName") & " - " & column("Description")  
        
                                    Checkcol.ReadOnly = Boolean.Parse(column("Readonly"))  
        
                                Else 
        
                                    Dim boundcol As New GridBoundColumn()  
        
                                    gridServers.MasterTableView.Columns.Add(boundcol)  
        
                                    boundcol.UniqueName = column("FullName")  
        
                                    boundcol.HeaderText = column("FriendlyColumnName")  
        
                                    boundcol.DataField = column("FullName")  
        
                                    boundcol.HeaderStyle.ForeColor = Drawing.Color.Red  
        
                                    boundcol.HeaderTooltip = boundcol.HeaderTooltip.ToString() + " - " + column("FullName") & " - " & column("Description")  
        
                                    boundcol.ReadOnly = Boolean.Parse(column("Readonly"))  
        
                                End If 
        
                            End If 
        
                        End If 
        
                    Next 
        
                End Sub 
        
                Private Class MyEditBoxTemplate  
        
                    Implements ITemplate  
        
                    Protected EditBox As RadEditor  
        
                    Private colname As String 
        
                    Public Sub New(ByVal cName As String)  
        
                        MyBase.New()  
        
                        colname = cName  
        
                    End Sub 
        
                    Public Sub InstantiateIn(ByVal container As System.Web.UI.Control) Implements ITemplate.InstantiateIn  
        
                        EditBox = New RadEditor  
        
                        EditBox.ID = "editBox" 
        
                        'Format edit Box  
        
                        EditBox.Width = "500" 
        
                        EditBox.Width = "300" 
        
                        Dim myTools() As String = {"ToggleScreenMode", "Bold", "Italic", "Underline", "Fontsize", "Fontname", "Cut", "Copy", "Paste", _  
        
                                                   "Undo", "Redo", "Indent", "Outdent"}  
        
                        Dim toolname As String 
        
                        Dim Main As New EditorToolGroup()  
        
                        For Each toolname In myTools  
        
                            Dim tool As New EditorTool(toolname)  
        
                            tool.Type = EditorToolType.Button  
        
                            Main.Tools.Add(tool)  
        
                        Next 
        
                        EditBox.Tools.Add(Main)  
        
                        AddHandler EditBox.DataBinding, AddressOf Me.EditBox_DataBinding  
        
                        container.Controls.Add(EditBox)  
        
                    End Sub 
        
                    Private Sub EditBox_DataBinding(ByVal sender As Object, ByVal e As EventArgs)  
        
                        Dim eBox As RadEditor = CType(sender, RadEditor)  
        
                        Dim container As GridEditFormItem = CType(eBox.NamingContainer, GridEditFormItem)  
        
                        'eBox.Content = CType(container.DataItem, DataRowView)(colname).ToString()  
        
                        eBox.Content = "<b>Server Notes</b><br/><br/>Previous server notage may not be modified. Any notes written and saved here will be appended." 
        
                    End Sub 
        
                End Class 
        
            End Class

Grid

answered on 11 Jun 2009

1 answer

119 views

Linux/Windows - Modifications?

Hello!

We are delighted with RadControls-Trial-Testing and we plan to develop a cross-OS web-application (IIS/Apache-Mono).

Is it possible to run RadControls (ASP.NET Ajax) on Linux and Windows without making changes? – I mean, do we have to make changes, like swap the DLL or make business-code modifications, if we deploy on Linux/windows?

Best Regards

Martin, Austria

General Discussions

answered on 11 Jun 2009

1 answer

160 views

DropDownList populated based on value in parent grid

This is the situation.

I have a grid with a two level hierachy. In the child grid I have a dropdowncolumn defined. The values for the dropdown come from a business object that returns a List<IServer>. The GetServerList method of the BLL takes a parameter (int environmentID) to ensure only the servers for a particular environment are returned. The environmentID is held on the parent table and can I assume be accessed using the following notation.

e.Item.OwnerTableView.DataKeyValues[e.Item.ItemIndex][

"EnvironmentID"]

my problem is that I cannot for the life of me work out how to populate the drop down. If it didnt require any parameters then I would simply set it to an objectdatasource defined on the page (as I have for other dropdown columns.)

This must be possible, I have tried stuff in the ItemDataBound/ItemCreated events but just cant seem to get it working.

Someone must have done this before. Any help would be much appreciated.

Regards

Ben Blackmore.

Grid

answered on 11 Jun 2009

1 answer

243 views

'Sys.WebForms.PageRequestManager' is null or not an object

Hi,

I am getting the above error on my page load.
I am using RadAjaxPanel and RadScriptManager in my page. I browsed for it on net and seems it essentially occurs when a page has UpdatePanel.
I was using inbulit server of Visual Studio for my application till date. I never got this error in development environment but my client is getting error "System.WebForm.PageRequestManagerParsorErrorException" intermittently on staging which I think is originated from this one.
Today, I set up IIS for my application and created virtual directory for it, and this error started occurring always on page load.
(I have already added entry for Telerik.Web.UI.WebResource.axd in HttpHandlers section of my web.config)

I have already read "Eilon Lipton's Blog" and is of no use for me.

My scenario:
I have a grid which has a link in header having name "Add New". When user clicks on this link, new row gets added in the grid. I have RadDatePicker control in one of the columns in my grid. I am Ajaxifying my grid for this functionality.

Various things I tried from blogs are:

1. EnableEventValidation="false" in page directive
2.EnablePartialRendering="true" and LoadScriptsBeforeUI="true" in asp:ScriptManager.

Please help me in this if you have any idea.

Thanks and Regards,
Mangesh Gurav

Grid

answered on 11 Jun 2009

9 answers

312 views

Export From RadGrid

Hi,

I saw the demo code for exporting rad grid data in to csv files. But in my application I am not getting ExportToCSV() method. Can you tell me why I am not able to access this ExportToCSV() method. I am getting only ExportToExcel() and ExportToExcel2007(), even though i am getting ExportToExel as Obolete

Grid

answered on 11 Jun 2009

2 answers

102 views

couple of problems

Hi,

So far I've implemented most of the controls without much hassle, except the chart control...

Databinding overwrites pre-defined series
If a series is created in the aspx and a datasourseid is specified, the series created in aspx will not show

Find all x label values, but not series values
It defines the x label values from the complete data set, however it only displays the data for the x labels found in the first series. So if the datatable doesn't have values for each x-point then it doesn't show. I've checked my sql query and flipped the order by (eg. year first, month first) and depending on the order by, some bars will show and some not. Will now write some dodge sql to ensure data at each x-point.

Formatting text x values (text color specifically)
No idea where this is set and have been searching for an hour.

Any ideas or suggestions would really be appreciated.

Chart (Obsolete)

answered on 11 Jun 2009

2 answers

71 views

[Solved] Problem with radcontextmenu into radpane?

Hello,

Is there anyone who had experienced problems using a contextmenu into a radpane?

My problem is as follows:

I have an input button into a radpane and an a javascript function that shows the context menu when the button is clicked. But when the menu is displayed it collapses inmediately. I have copied the code and pasted it outside the radpane and then it works fine.

answered on 11 Jun 2009

1 answer

124 views

ImageManager- How to limit number of image selectors?

Hello

I am sure there must be an option for this, but I can't find it.
In the image manager I want there only to be one image selector when it first starts up rather than 3 and I don't want it to add a new one each time.
I also don't want the remove buttons.
Is there an option, similar to the fileupload control that allows this?

Thanks

Editor

answered on 11 Jun 2009

1 answer

168 views

Cancel grid postback client-side

In my grid I have a FormTemplate and use an ImageButton for both the Update and Canel:

    
            <asp:ImageButton ID="imgUpdate" runat="server" ImageUrl="~/images/Update.gif" ToolTip="Update Record" 
        
              Style="padding-right: 5px" CommandName="Update" OnClientClick="OnSessionUpdate(this)" /> 
        
            <asp:ImageButton ID="imgCancel" runat="server" ImageUrl="~/images/Cancel.gif" ToolTip="Cancel Editing" 
        
              CommandName="Cancel" />

I want to implement my own client-side validation mechanism. When the user clicks the Update button I use the OnClientClick event to call a function where I validate various controls within the FormTemplate. If the validation determines that the user must enter some data, I want to cancel the grid calling the ItemCommand event on the server-side. I have not found any means by which I can cancel the grid from calling the ItemCommand event (or any other event for that matter).

How can I cancel the grid from doing a postback?

Thanks
Johann

Grid

answered on 11 Jun 2009

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