Questions on UI for ASP.NET AJAX Forum

1 answer

318 views

Hi,

We are testing the radScheduler for ASP.NET AJAX, we need to drag a branch name and ID from the tree view and create a visit schedule for that branch. On the nodeDropping event we are creating a new appointment, can we add a new attribute to the appointment from the client side other than set_start, set_end and set_subject, like below we need to add "SiteId" as an attribute to the appointment.

                    var newAppointment = new Telerik.Web.UI.SchedulerAppointment();
                    newAppointment.set_start(startTime);
                    newAppointment.set_end(endTime);
                    newAppointment.set_subject(text);
                    newAppointment.set_description(siteId);
                    newAppointment.get_attributes().setAttribute("SiteId", siteId);

And in the server-side on post back, we will get all the appointments and update the database accordingly.

   foreach (Appointment a in RadScheduler1.Appointments)
        {
            string strSiteID;
            string strSubjectSiteId = a.Subject;
            DateTime startDate = a.Start;
           string siteID = a.Attributes["SiteId"];
        }

There is no error thrown we set the attribute at the client side, but in server side we are getting null and this attribute count is set to 0.
We have added the CustomAttributeNames="SiteId" into the markup.

Can you please guide us how we can add a custom attribute to the a Telerik.Web.UI.SchedulerAppointment.

Thank you

Regards,
Majid

Scheduler

answered on 24 Apr 2014

1 answer

271 views

GridHyperLinkColumn does not display when binding to IEnumberable?

1.if (!Page.IsPostBack)

2.{

3. DataTable table = agenda.GetMeetings(DateTime.Now.AddDays(-30), DateTime.Now.AddDays(30));

4. var meetings = table.AsEnumerable().OrderByDescending(m => m.Field<DateTime>("StartTime"));

5.

6. RadGrid1.DataSource = meetings;

7. RadGrid1.DataBind();

8.}

Above is the databinding code.

Here is the GridHyperLinkColumn:

1.<telerik:GridHyperLinkColumn Text="View Agenda" HeaderText="" DataNavigateUrlFields="MeetingID"

2. DataNavigateUrlFormatString="~/Routing/ViewAgenda.aspx?MeetingID={0}">

3.</telerik:GridHyperLinkColumn>

The column does not populate the DataNavigateURLFields property if the table is bound after the AsEnumberable conversion. If binding directly to the DataTable type, the hyperlink will work.

Grid

answered on 24 Apr 2014

1 answer

105 views

LinkManager Missing OK button in Internet Explorer 11

I use version 2011.1.413.35
LinkManager is missing OK button in Internet Explorer 11 but the buttons are visible in Firefox and Chrome.

Editor

answered on 24 Apr 2014

15 answers

917 views

How to expand one level on each click when all row fields are collapsed initially

I have 4 row fields defined in RadPivotGrid. I made all row fields colapsed initially by set RowGroupsDEfaultExpanded attribute to false. But once I click the expand button on top level, it expands all 4 level for me, but I expect just expand level 2. Is there any way to change it? Thanks.

PivotGrid

answered on 24 Apr 2014

1 answer

281 views

RadWindow OnClientClose event causing postback of parent

Prior to adding the OnClientClose event handler, closing the RadWindow did not cause a postback. I added the following function to the RadWindow as the OnClientClose event handler, and now the parent window refreshes with a postback anytime the RadWindow is closed. The event handler's purpose is to hide a the DropDownList of a RadComboBox within the RadWindow that isn't hidden properly if it's displayed and the user closes the RadWindow (The RadWindow closes, but the RadComboBox's DropDownList remains displayed until you click elsewhere on the page). How can I prevent the postback?

There are no other Unload or Closing related events on the RadWindow. Like I said, without the event handler for ClientClose, closing the RadWindow does not cause a postback of the parent window. I didn't think hideDropDown() would cause a postback (at least, looking at its definition, it doesn't look like it should).

function rwPOAOptionsDialog_ClientClose(sender, args) {
$('#<%=luPatient.ClientID%>_cbLookup').hideDropDown();
}

Window

answered on 24 Apr 2014

6 answers

167 views

Detail Grid binding by Code

    
            Protected Sub RadGridProducts_ItemCommand(ByVal source As Object, ByVal e As Telerik.Web.UI.GridCommandEventArgs) Handles RadGridProducts.ItemCommand 
        
                    ViewState("GridItem") = e.Item ' gets the selected row for detail 
        
                    LblException.Text = "" 
        
                    Select Case e.CommandName 
        
                    End Select 
        
                End Sub 
        
            Protected Sub RadGridProducts_DetailTableDataBind(ByVal source As Object, ByVal e As Telerik.Web.UI.GridDetailTableDataBindEventArgs) Handles RadGridProducts.DetailTableDataBind 
        
                    Try 
        
                        Dim item As GridItem = CType(ViewState("GridItem"), GridItem) 
        
                        Dim ProductId As String = RadGridProducts.MasterTableView.DataKeyValues(item.ItemIndex)("Id").ToString() 
        
                        Dim DTable As DataTable = DataAccess.Products.GetAllProductPricesById(ProductId) 
        
                        RadGridProducts.MasterTableView.DetailTables(0).DataSource = DTable 
        
                        RadGridProducts.MasterTableView.DetailTables(0).DataBind() 
        
                    Catch ex As Exception 
        
                    End Try 
        
                End Sub

i want to bind the details table view programmatically with the above code.
But This Gives an error as follows

Type 'Telerik.Web.UI.GridDataItem' in Assembly 'Telerik.Web.UI, Version=2008.3.1314.20, Culture=neutral, PublicKeyToken=121fae78165ba3d4' is not marked as serializable.

Please Help me i dont want to use DataSource Controls as our Project DAL is written in classic way.
Thanks

Grid

answered on 24 Apr 2014

1 answer

151 views

Cannot unregister UpdatePanel in Radgrid

I am creating a RadGrid as follows:

protected override void OnInit(EventArgs e)

{

this.Controls.Clear();

this._RadLoadingPanel.ID = "_RadLoadingPanel";

this._RadLoadingPanel.Transparency = 30;

this._RadLoadingPanel.Skin = "WebBlue";

this._RadLoadingPanel.BackgroundPosition = AjaxLoadingPanelBackgroundPosition.Center;

this.Controls.Add(this._RadLoadingPanel);

this._RadGrid1.Skin = "WebBlue";

this._RadGrid1.Width = Unit.Percentage(98);

this._RadGrid1.GridLines = GridLines.None;

this._RadGrid1.AutoGenerateColumns = false;

this._RadGrid1.AllowSorting = true;

this._RadGrid1.GridLines = GridLines.None;

this._RadGrid1.PageSize = 100;

this._RadGrid1.PagerStyle.Mode = GridPagerMode.NextPrevAndNumeric;

this._RadGrid1.ShowGroupPanel = true;

this._RadGrid1.AllowPaging = true;

this._RadGrid1.AllowSorting = true;

this._RadGrid1.EnableLinqExpressions = false;

this._RadGrid1.MasterTableView.NoMasterRecordsText = string.Format("There are no documents associated with this order / quote / proposal.");

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

this._RadGrid1.NeedDataSource += RadGrid1_NeedDataSource;

// Setup Columns

GridBoundColumn boundColumn = new GridBoundColumn();

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

boundColumn.DataField = this._DocList.DescriptionColumn.ColumnName;

boundColumn.HeaderText = "Document Type";

boundColumn.UniqueName = "DocumentType";

boundColumn.AllowSorting = true;

this._UpdatePanel.Unload += new EventHandler(UpdatePanel_Unload);

this._UpdatePanel.ID = "ajaxPanel";

this._UpdatePanel.UpdateMode = UpdatePanelUpdateMode.Always;

this._UpdatePanel.ContentTemplateContainer.Controls.Add(this._RadGrid1);

this.Controls.Add(this._UpdatePanel);

base.OnInit(e);

}

protected override void OnPreRender(EventArgs e)

{

_RadGrid1.MasterTableView.Rebind();

base.OnPreRender(e);

var ajaxManager = RadAjaxManager.GetCurrent(Page);

if (ajaxManager != null)

ajaxManager.AjaxSettings.AddAjaxSetting(this._UpdatePanel, this._RadGrid1, this._RadLoadingPanel);

}

It gives the following error:
Cannot unregister UpdatePanel with ID 'ajaxPanel' since it was not registered with the ScriptManager. This might occur if the UpdatePanel was removed from the control tree and later added again, which is not supported.
Parameter name: updatePanel

After reading in forums I added the following:

void UpdatePanel_Unload(object sender, EventArgs e)

{

MethodInfo methodInfo = typeof(ScriptManager).GetMethods(BindingFlags.NonPublic | BindingFlags.Instance)

.Where(i => i.Name.Equals("System.Web.UI.IScriptManagerInternal.RegisterUpdatePanel")).First();

methodInfo.Invoke(ScriptManager.GetCurrent(Page),

new object[] { sender as UpdatePanel });

}

This did not resolve it. I even added Controls.clear, but did not work. When I comment out the boundColumn.DataField = this._DocList.DescriptionColumn.ColumnName; statement, it displays a grid.
Please help me resolve this.
I forgot to mention that the Update {anel of this Radgrid is placed inside another Update Panel.

Grid

answered on 24 Apr 2014

1 answer

210 views

How to avoid RadGrid refresh while navigating through pages?

Hi guys,

I have page with radgrid which has 3 columns of data and 1 column of asp:checkbox with allowpaging="true". The problem is when the user selects the values in 1 page and moves to further pages the page is refreshing resulting in unchecking of the selected items.How can I avoid this?I want to retain the checkbox value no matter how many times the user navigates through pages.

Thanks

Grid

answered on 24 Apr 2014

6 answers

1.1K+ views

Sys.ArgumentNullException: Value cannot be null Parameter name: handler

hi, I have a Grid that updates through a User control and uses LINQ in the background and everything works fine until I Edit/Update few times. The problem is that the grid freezes after I update a couple of times and I get this javascript error. RadGrid.NET2.dll assembly version number is 5.1.3.0. Please help me solve it as this is very urgent. Thanks in anticipation.

Here's my code.

<

asp:ScriptManager ID="ScriptManager1" runat="server"></asp:ScriptManager>

<telerik:RadAjaxManager ID="RadAjaxManager1" runat="server">

<telerik:AjaxUpdatedControl ControlID="rgProperties" /></UpdatedControls>

</telerik:AjaxSetting></AjaxSettings></telerik:RadAjaxManager>

<rad:RadGrid ID="rgProperties" runat="server" AllowFilteringByColumn="True" AllowPaging="True" AllowSorting="True" AutoGenerateColumns="False" AutoGenerateDeleteColumn="false" AutoGenerateEditColumn="False" EnableAJAX="True" GridLines="None" onneeddatasource="rgProperties_NeedDataSource" Height="700px" OnDeleteCommand="rgProperties_DeleteCommand" OnUpdateCommand="rgProperties_UpdateCommand">

<

MasterTableView DataKeyNames="Id" Width="100%">

<

RowIndicatorColumn Visible="False"><HeaderStyle Width="50px"></HeaderStyle>

</

RowIndicatorColumn><ExpandCollapseColumn Visible="true" Resizable="False">

<

HeaderStyle Width="200px"></HeaderStyle>

</

ExpandCollapseColumn>

<rad:GridEditCommandColumn EditText="Edit" UpdateText="Update" CancelText="Cancel" UniqueName="EditButtonColumn"></rad:GridEditCommandColumn>

<rad:GridButtonColumn UniqueName="DeleteColumn" Text="Delete" CommandName="Delete" ConfirmText="Are you sure?" />

<rad:GridBoundColumn UniqueName="Ref#" HeaderText="RefNo" DataField="RefNo"/>

<rad:GridBoundColumn UniqueName="Name" HeaderText="Name" DataField="Name"/>

<rad:GridBoundColumn UniqueName="Description" HeaderText="Description" DataField="Description"/>

<rad:GridBoundColumn UniqueName="Price" HeaderText="Price" DataField="Price"/>

<rad:GridBoundColumn UniqueName="Available For" HeaderText="Available For" DataField="idAvailableFor"/>

<rad:GridBoundColumn UniqueName="Availability" HeaderText="Availability" DataField="idAvailability"/>

<rad:GridBoundColumn UniqueName="Status" HeaderText="Status" DataField="idStatus"/>

<rad:GridBoundColumn UniqueName="Property Type" HeaderText="Property Type" DataField="idPropertyType"/>

<rad:GridBoundColumn UniqueName="Property City" HeaderText="Property City" DataField="IdPropertyCity"/>

<rad:GridBoundColumn UniqueName="Property Area" HeaderText="Property Area" DataField="IdPropertyArea"/>

</Columns>

</EditFormSettings>

</EditColumn>

</EditFormSettings>

</

MasterTableView>

</

rad:RadGrid>

Grid

answered on 23 Apr 2014

1 answer

119 views

Set TimeView.StartTime on the basis of date selection

Hi Dev,

Hope you are doing good. I wanted to achieve below scenario using the RadDateTimePicker under the radgrid where N number of RadDateTimePicker can be added or removed.

The StartTime of TimeView should change on the basis of date selection. e. g.
1. All the date before today should not be selectable (Already achieved this using Calendar.RangeMinDate property)
2. By default (if any date is not selected), the time should start from from 12:00 AM.
2. If the date is selected as today, and current time is 4:15 PM the timeview should have start with the 4:30 PM.
3. If date is selected as day after today then time should start from from 12:00 AM.

I have tried setting StartTime in multiple events but only able to set the StartTime properly in RadGrid_OnItemCreated event. but i am not getting the selecteddate here.

Thanks !!!

General Discussions

answered on 23 Apr 2014