Questions on UI for ASP.NET AJAX Forum

110,819 questions

4 answers

132 views

Get column values that is not displayed in RadGrid

I have a RadGrid which is bound to a stored Proc. There are columns in the stored proc that are not displayed in the grid, but I want to access their values.
For instance "IsNewProduct" is not displayed in the grid but I want to access its values when a row is selected.PLease let me know how to achieve this.

Grid

answered on 09 Jul 2014

14 answers

495 views

ItemStyle

Hi,
I am trying to visualize the fact that some dates are unavailable. I first tried to do this in Calendar_DayRender, but I was only able to disable the dates, not colorize them.

I then tried Calendar_PreRender, and added all unavailable dates (with formatting) into the calendars SpecialDays. What happened then was
1. still only disabled, no color.
2. when I go to next month, the backcolor appears. it then stays, and works ok.
3. ForeColor is never set. It seems that <span> overrides the styling. css for span is set by Telerik.

Any suggestions on how to fix this?

Calendar

answered on 09 Jul 2014

3 answers

585 views

Urgent:Session TimeOut

Hai All,

I am facing one problem in my website i am having one default.aspx page its not inheriting master page what i need when i open my site it will expire after 6mins for me whats happening for every pages its working fine every page is inheriting master page but this default.aspx is not inheriting master page so when i open default.aspx and doing something also its showing time out.so now i want to stop master page session time in this defult.aspx how to do.here i dont want to inherit master page and recreate bcz if i inherit master page so many issues will come so other than any solution is there plz tel me its urgent

Thanks

PageLayout

answered on 09 Jul 2014

3 answers

283 views

Avg in radgrid footer

Hello All,

I have activated Avg facility by applying Aggregate="Avg", which works fine but when the column is having no data then also avg counts that and calculates wrong avg.

for example

column1
$
$
$44
$44
$44
Avg: $26.40

Actually it should be $ 44

How to avoid blanks and How to achieve that?

Thank you!
Vishal

Grid

answered on 09 Jul 2014

1 answer

222 views

Select checkbox when textbox in grid clicked

I have a radgrid with a checkbox column and textbox column as follows:

this._RadGrid1.AllowFilteringByColumn = true;

this._RadGrid1.AllowSorting = true;

this._RadGrid1.MasterTableView.AllowNaturalSort = true;

this._RadGrid1.MasterTableView.DataKeyNames = new string[] { this._PriceDealProductBanTable.PriceDealEntityProductItemIdColumn.ColumnName };

this._RadGrid1.MasterTableView.ClientDataKeyNames = new string[] { this._PriceDealProductBanTable.PriceDealEntityProductItemIdColumn.ColumnName };

this._RadGrid1.EnableLinqExpressions = false;

this._RadGrid1.MasterTableView.NoMasterRecordsText = "No Products found.";

this._RadGrid1.MasterTableView.Width = Unit.Percentage(100);

this._RadGrid1.ClientSettings.Selecting.AllowRowSelect = true;

this._RadGrid1.AllowMultiRowSelection = true;

this._RadGrid1.NeedDataSource += RadGrid1_NeedDataSource;

this._RadGrid1.ItemDataBound += RadGrid1_ItemDataBound;

GridBoundColumn boundColumn = new GridBoundColumn();

string columnName;

#region RadGrid Columns

GridClientSelectColumn selectAll = new GridClientSelectColumn();

selectAll.UniqueName = "SelectOne";

this._RadGrid1.MasterTableView.Columns.Add(selectAll);

//Other columns

templateColumn = new GridTemplateColumn();

templateColumnName = this._PriceDealProductBanTable.BillingAccountNumberColumn.ColumnName;

this._RadGrid1.MasterTableView.Columns.Add(templateColumn);

templateColumn.DataField = templateColumnName;

templateColumn.ItemTemplate = new TextBoxTemplate(templateColumnName);

templateColumn.HeaderText = "BAN";

templateColumn.UniqueName = "BAN";

templateColumn.AllowFiltering = false;

The textboxtemplate is as follows:

public class TextBoxTemplate : ITemplate

{

protected RadTextBox _textBox;

string _columnName;

public TextBoxTemplate(string columnName)

{

this._columnName = columnName;

}

public void InstantiateIn(System.Web.UI.Control container)

{

this._textBox = new RadTextBox();

this._textBox.ID = this._columnName;

container.Controls.Add(this._textBox);

this._textBox.DataBinding += new EventHandler(_textBox_DataBinding);

}

void _textBox_DataBinding(object sender, EventArgs e)

{

RadTextBox txt = (RadTextBox)sender;

GridDataItem container = (GridDataItem)txt.NamingContainer;

txt.Text = ((DataRowView)container.DataItem)[this._columnName].ToString();

}

When I click on the textbox, I want the row to be automatically selected. How can I achieve this?
Also after selections are made, and i click on a row, all selections are disabled. I want to change this behaviour also. Deselect only happens when I click on the checkbox.

Grid

answered on 09 Jul 2014

1 answer

184 views

Change behavior of GridClientSelectColumn

I have a RadGrid as follows:

this._RadGrid1.AllowSorting = true;

this._RadGrid1.MasterTableView.AllowNaturalSort = true;

this._RadGrid1.MasterTableView.DataKeyNames = new string[] { this._PriceDealProductBanTable.PriceDealEntityProductItemIdColumn.ColumnName };

this._RadGrid1.MasterTableView.ClientDataKeyNames = new string[] { this._PriceDealProductBanTable.PriceDealEntityProductItemIdColumn.ColumnName };

this._RadGrid1.EnableLinqExpressions = false;

this._RadGrid1.MasterTableView.NoMasterRecordsText = "No Products found.";

this._RadGrid1.MasterTableView.Width = Unit.Percentage(100);

this._RadGrid1.ClientSettings.Selecting.AllowRowSelect = true;

this._RadGrid1.AllowMultiRowSelection = true;

this._RadGrid1.NeedDataSource += RadGrid1_NeedDataSource;

this._RadGrid1.ItemDataBound += RadGrid1_ItemDataBound;

GridBoundColumn boundColumn = new GridBoundColumn();

string columnName;

#region RadGrid Columns

GridClientSelectColumn selectAll = new GridClientSelectColumn();

selectAll.UniqueName = "SelectOne";

this._RadGrid1.MasterTableView.Columns.Add(selectAll);

the GridClientSelectColumn allows multiple selection, but clicking on a row de-selects all other rows. I want the all rows to stay selected unless manually de-selected from the checkbox. How can I achieve this?

Grid

answered on 09 Jul 2014

4 answers

184 views

[Solved] Displaying page index/counts

I put the following code in the RadGrid1_PageIndexChanged event:

if ((e.NewPageIndex + 1) == rgResults.PageCount)

{

showingRowsTo = GridSource.Tables[0].Rows.Count;

}

else

{

showingRowsTo = (e.NewPageIndex + 1) * rgResults.PageSize;

}

string rowCount = string.Format("Displaying {0}-{1} of {2}", showingRowsFrom, showingRowsTo, GridSource.Tables[0].Rows.Count);

lblResultsCountBottom.Text = lblResultsCountTop.Text = rowCount;

Unfortunately, it looks like this doesn't do a full postback and the label doesn't end up getting updated. How can I go about doing this? I tried doing it client side and had problems with this, too. It says $find is undefined.

$(document).ready(function () {

var grid = $find("<%=rgResults.ClientID%>");

var mtv = grid.get_masterTableView();

var pageIndex = mtv.get_currentPageIndex();

alert(pageIndex);

});

Grid

answered on 08 Jul 2014

2 answers

302 views

Suggestion on how to create vector image/pdf for chart on server side

Hi,

Can you please provide some suggestion on creating a chart on server side and export SVG out of it to create vector graphics/pdf.

We have an application which runs as a scheduler on the server, generates charts and emails them to customers in PDF/Images. All this without any manual interaction.

I looked at RadChart and RadHTMLChart. RadChart is a server side compontent but can't export vercor graphics, and RadHtmlChart renders SVG strictly the on browser.

The problem with using RadHtmlChart is we have to run a browser object from server side code to execute JS which can be a 'not so' reliable solution.

Please suggest. Thanks!

Chart (Obsolete)

answered on 08 Jul 2014

11 answers

614 views

RadGrid with DynamicDataManager (VB.net)

Hi,

I would like to use the RadGrid in an ASP.net web page using the DynamicDataManager. I have tried just registering the RadGrid with the DynamicDataManager but get errors saying that the control is not supported (I know I was being hopeful !). I then did some digging around and found the class for DynamicRadGrid. This example was in C# but I converted it to the following:~

                    Imports System         
            Imports System.Data         
            Imports System.Configuration         
            Imports System.Linq         
            Imports System.Web         
            Imports System.Web.Security         
            Imports System.Web.UI         
            Imports System.Web.UI.HtmlControls         
            Imports System.Web.UI.WebControls         
            Imports System.Web.UI.WebControls.WebParts         
            Imports System.Xml.Linq         
            Imports Telerik.Web.UI         
            Imports System.Collections         
            Imports System.Web.DynamicData         
            Imports System.Collections.Generic         
            Imports System.ComponentModel         
            Imports System.Globalization         
            Imports System.Collections.Specialized         
                     
            <ControlValueProperty("DataKeySelectedValue")> _         
            Public Class DynamicRadGrid         
                Inherits RadGrid         
                Implements IControlParameterTarget         
                Implements IPersistedSelector         
                '         
                Public Sub New()         
                End Sub         
                     
                Private selectedIndex As String = Nothing         
                     
                Protected Overloads Overrides Sub OnLoad(ByVal e As EventArgs)         
                    If SelectedIndexes.Count > 0 Then         
                        selectedIndex = SelectedIndexes(0)         
                    End If         
                     
                    MyBase.OnLoad(e)         
                End Sub         
                     
                Protected Overloads Overrides Sub OnDataBound(ByVal e As EventArgs)         
                    MyBase.OnDataBound(e)         
                     
                    If selectedIndex <> Nothing Then         
                        Dim item As GridItem = Items(selectedIndex)         
                        If Not item Is Nothing Then         
                            item.Selected = True         
                        End If         
                    Else         
                        If Items.Count > 0 Then         
                            Items(0).Selected = True         
                        End If         
                    End If         
                End Sub         
                     
                <Browsable(False)> _         
                Public ReadOnly Property DataKeySelectedValue() As Object         
                    Get         
                        If Not Me.DataKey Is Nothing Then         
                            Return Me.DataKey.Value         
                        End If         
                     
                        Return SelectedValue         
                    End Get         
                End Property         
                     
                Private _dataKey As System.Web.UI.WebControls.DataKey         
                Public Property DataKey() As System.Web.UI.WebControls.DataKey Implements IPersistedSelector.DataKey         
                    Get         
                        Return _dataKey         
                    End Get         
                    Set(ByVal value As System.Web.UI.WebControls.DataKey)         
                        _dataKey = value         
                        If Not _dataKey Is Nothing Then         
                            DirectCast(_dataKey, IStateManager).TrackViewState()         
                        End If         
                    End Set         
                End Property         
                     
                'protected override object SaveControlState()         
                '{         
                '    return new object[]{         
                '        base.SaveControlState(),         
                '        _dataKey != null ? ((IStateManager)_dataKey).SaveViewState() : null         
                '    };         
                '}         
                     
                'protected override void LoadControlState(object savedState)         
                '{         
                '    object[] controlState = (object[])savedState;         
                '    base.LoadControlState(controlState[0]);         
                '    if (_dataKey != null)         
                '    {         
                '        ((IStateManager)_dataKey).LoadViewState(controlState[1]);         
                '    }         
                '}         
                     
                Protected Overloads Overrides Sub OnInit(ByVal e As EventArgs)         
                    MyBase.OnInit(e)         
                     
                    AllowAutomaticUpdates = True         
                    AllowAutomaticDeletes = True         
                     
                    Dim metaTable As MetaTable = Me.FindMetaTable()         
                     
                    Dim list As New List(Of String)()         
                    For Each column As MetaColumn In metaTable.PrimaryKeyColumns         
                        list.Add(column.Name)         
                    Next         
                    MasterTableView.DataKeyNames = list.ToArray()         
                     
                    For Each column As MetaColumn In metaTable.Columns         
                        If Not column.Scaffold OrElse column.IsLongString OrElse TypeOf column Is MetaChildrenColumn Then         
                            Continue For         
                        End If         
                     
                        Dim gridColumn As New DynamicGridBoundColumn()         
                     
                        gridColumn.DataField = column.Name         
                        gridColumn.ConvertEmptyStringToNull = column.ConvertEmptyStringToNull         
                        gridColumn.DataFormatString = column.DataFormatString         
                        gridColumn.UIHint = column.UIHint         
                        gridColumn.HtmlEncode = column.HtmlEncode         
                        gridColumn.NullDisplayText = column.NullDisplayText         
                        gridColumn.ApplyFormatInEditMode = column.ApplyFormatInEditMode         
                        gridColumn.HeaderText = column.DisplayName         
                     
                        MasterTableView.Columns.Add(gridColumn)         
                    Next         
                End Sub         
                     
                Public Function GetPropertyNameExpression(ByVal columnName As String) As String Implements IControlParameterTarget.GetPropertyNameExpression         
                    Return "DataKeySelectedValue"         
                End Function         
                     
                ReadOnly Property Table() As MetaTable Implements IControlParameterTarget.Table         
                    Get         
                        Return Me.FindMetaTable()         
                    End Get         
                End Property         
                     
                Public Overridable ReadOnly Property FilteredColumn() As MetaColumn Implements IControlParameterTarget.FilteredColumn         
                    Get         
                        Return Nothing         
                    End Get         
                End Property         
            End Class         
                     
            Public Class DynamicGridBoundColumn         
                Inherits GridBoundColumn         
                Private _applyFormatInEditMode As System.Nullable(Of Boolean)         
                Private _convertEmptyStringToNull As System.Nullable(Of Boolean)         
                Private _dataField As String         
                Private _dataFormatString As String         
                Private _htmlEncode As Boolean = True         
                Private _nullDisplayText As String         
                Private _column As MetaColumn         
                     
                Public Overloads Overrides Sub FillValues(ByVal newValues As IDictionary, ByVal editableItem As GridEditableItem)         
                    Dim values As New OrderedDictionary()         
                     
                    ExtractValuesFromBindableControls(values, editableItem)         
                     
                    For Each entry As DictionaryEntry In values         
                        If Not newValues.Contains(entry.Key) Then         
                            newValues.Add(entry.Key, entry.Value)         
                        End If         
                    Next         
                End Sub         
                     
                Friend Shared Sub ExtractValuesFromBindableControls(ByVal dictionary As IOrderedDictionary, ByVal container As Control)         
                    Dim control As IBindableControl = TryCast(container, IBindableControl)         
                    If Not control Is Nothing Then         
                        control.ExtractValues(dictionary)         
                    End If         
                    For Each control2 As Control In container.Controls         
                        ExtractValuesFromBindableControls(dictionary, control2)         
                    Next         
                End Sub         
                     
                Public Overloads Overrides Sub InitializeCell(ByVal cell As TableCell, ByVal columnIndex As Integer, ByVal inItem As GridItem)         
                    If TypeOf inItem Is GridEditableItem Then         
                        Dim dynamicControl As New DynamicControl()         
                        dynamicControl.DataField = DataField         
                     
                        Dim isInsert As Boolean = TypeOf inItem Is GridEditFormInsertItem OrElse TypeOf inItem Is GridDataInsertItem         
                     
                        If isInsert Then         
                            dynamicControl.Mode = DataBoundControlMode.Insert         
                        End If         
                     
                        If inItem.IsInEditMode Then         
                            dynamicControl.Mode = DataBoundControlMode.Edit         
                        End If         
                     
                        dynamicControl.UIHint = UIHint         
                        dynamicControl.HtmlEncode = HtmlEncode         
                        dynamicControl.DataFormatString = DataFormatString         
                        dynamicControl.NullDisplayText = NullDisplayText         
                     
                        If _convertEmptyStringToNull.HasValue Then         
                            dynamicControl.ConvertEmptyStringToNull = ConvertEmptyStringToNull         
                        End If         
                     
                        If _applyFormatInEditMode.HasValue Then         
                            dynamicControl.ApplyFormatInEditMode = ApplyFormatInEditMode         
                        End If         
                     
                        cell.Controls.Add(dynamicControl)         
                    Else         
                        MyBase.InitializeCell(cell, columnIndex, inItem)         
                    End If         
                End Sub         
                     
                     
                <Category("Behavior"), DefaultValue(False)> _         
                Public Overloads Property ConvertEmptyStringToNull() As Boolean         
                    Get         
                        If Me._convertEmptyStringToNull.HasValue Then         
                            Return Me._convertEmptyStringToNull.Value         
                        End If         
                        Return False         
                    End Get         
                    Set(ByVal value As Boolean)         
                        Me._convertEmptyStringToNull = New System.Nullable(Of Boolean)(value)         
                    End Set         
                End Property         
                     
                <DefaultValue(""), Category("Behavior")> _         
                Public Overrides Property DataField() As String         
                    Get         
                        If Not Me._dataField Is Nothing Then         
                            Return Me._dataField         
                        End If         
                        Dim obj2 As Object = MyBase.ViewState("DataField")         
                        If not obj2 is Nothing Then         
                            Return DirectCast(obj2, String)         
                        End If         
                        Return String.Empty         
                    End Get         
                    Set(ByVal value As String)         
                        If Not Object.Equals(value, MyBase.ViewState("DataField")) Then         
                            MyBase.ViewState("DataField") = value         
                            Me._dataField = value         
                            Me.OnColumnChanged()         
                        End If         
                    End Set         
                End Property         
                     
                <Category("Data"), DefaultValue("")> _         
                Public Overrides Property DataFormatString() As String         
                    Get         
                        Return (If(Me._dataFormatString, String.Empty))         
                    End Get         
                    Set(ByVal value As String)         
                        Me._dataFormatString = value         
                    End Set         
                End Property         
                     
                Private ReadOnly Property Column() As MetaColumn         
                    Get         
                        If MyBase.DesignMode OrElse (Owner Is Nothing) Then         
                            Return Nothing         
                        End If         
                        If Me._column Is Nothing Then         
                            Dim table As MetaTable = Owner.OwnerGrid.FindMetaTable()         
                            If table Is Nothing Then         
                                Throw New InvalidOperationException("")         
                            End If         
                            Me._column = table.GetColumn(Me.DataField)         
                        End If         
                        Return Me._column         
                    End Get         
                End Property         
                     
                Public Overloads Overrides Property HeaderText() As String         
                    Get         
                        Dim obj2 As Object = MyBase.ViewState("HeaderText")         
                        If Not obj2 Is Nothing Then         
                            Return DirectCast(obj2, String)         
                        End If         
                        If Not Me.Column Is Nothing Then         
                            Return Me.Column.DisplayName         
                        End If         
                        Return Me.DataField         
                    End Get         
                    Set(ByVal value As String)         
                        MyBase.HeaderText = value         
                    End Set         
                End Property         
                     
                <DefaultValue(True), Category("Behavior")> _         
                Public Overrides Property HtmlEncode() As Boolean         
                    Get         
                        Return Me._htmlEncode         
                    End Get         
                    Set(ByVal value As Boolean)         
                        Me._htmlEncode = value         
                    End Set         
                End Property         
                     
                <Category("Behavior"), DefaultValue("")> _         
                Public Property NullDisplayText() As String         
                    Get         
                        Return (If(Me._nullDisplayText, String.Empty))         
                    End Get         
                    Set(ByVal value As String)         
                        Me._nullDisplayText = value         
                    End Set         
                End Property         
                     
                     
                <DefaultValue(""), Category("Behavior")> _         
                Public Overridable Property UIHint() As String         
                    Get         
                        Dim obj2 As Object = MyBase.ViewState("UIHint")         
                        If Not obj2 Is Nothing Then         
                            Return DirectCast(obj2, String)         
                        End If         
                        Return String.Empty         
                    End Get         
                    Set(ByVal value As String)         
                        If Not Object.Equals(value, MyBase.ViewState("UIHint")) Then         
                            MyBase.ViewState("UIHint") = value         
                            Me.OnColumnChanged()         
                        End If         
                    End Set         
                End Property         
                     
                <Category("Behavior"), DefaultValue(False)> _         
                Public Property ApplyFormatInEditMode() As Boolean         
                    Get         
                        If Me._applyFormatInEditMode.HasValue Then         
                            Return Me._applyFormatInEditMode.Value         
                        End If         
                        Return False         
                    End Get         
                    Set(ByVal value As Boolean)         
                        Me._applyFormatInEditMode = New System.Nullable(Of Boolean)(value)         
                    End Set         
                End Property         
                     
                Public Overloads Overrides Function Clone() As GridColumn         
                    Dim column As New DynamicGridBoundColumn()         
                    column.CopyBaseProperties(Me)         
                     
                    Return column         
                End Function         
                     
                Protected Overloads Overrides Sub CopyBaseProperties(ByVal fromColumn As GridColumn)         
                    MyBase.CopyBaseProperties(fromColumn)         
                    Dim source As DynamicGridBoundColumn = DirectCast(fromColumn, DynamicGridBoundColumn)         
                     
                    ConvertEmptyStringToNull = source.ConvertEmptyStringToNull         
                    DataFormatString = source.DataFormatString         
                    UIHint = source.UIHint         
                    HtmlEncode = source.HtmlEncode         
                    NullDisplayText = source.NullDisplayText         
                    ApplyFormatInEditMode = source.ApplyFormatInEditMode         
                End Sub         
                     
            End Class         
                     
                     

The control now registers but I get an error in the designer saying httpContext can not be null. The project builds however, but when I run it the following code in the OnInit method throws an error (Me.FindMetaTable).

                     Protected Overloads Overrides Sub OnInit(ByVal e As EventArgs)         
                    MyBase.OnInit(e)         
                     
                    AllowAutomaticUpdates = True         
                    AllowAutomaticDeletes = True         
                     
                    Dim metaTable As MetaTable = Me.FindMetaTable()         
                     

Would it be possible to have a working VB.net version of this control for using with the DynamicDataManager?

Regards,

Mark

Grid

answered on 08 Jul 2014

2 answers

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RadGrid insert command custom text

I am using RadGrids in my webpage in several places. I want to customize the "insert" text when adding a new record.

Using the build in command item button to add a new record, it provides the fields to fill in along with an "insert" and "cancel" link. I want to change the text of the "insert" link to something else.

How can this be done?

Grid

answered on 08 Jul 2014

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