I've implemented a RadListBox which will almost always have more items than will stack vertically, thus there's almost always a scrollbar.  For reasons I've explained in other threads, my application requires that a single-click and a double-click cause a server-side postback.  That part of the equation has long been built and is working fine.

Where I've run into a problem is the age-old issue of selecting a ListBox item near the bottom, having the postback occur, and then the ListBox item no longer in exactly the same vertical position it was before and often not even visible.  I've read several threads in this forum addressing this problem and have come up with this solution of my own:

In the server-side method that handles selecting a listbox item, I added this code:


Which in turns executes this code on the client after the postback is done:


It seems to be working "okay" but I'm just wondering if, in 2012, this is the best/easiest way to solve this problem or whether there's a simpler/better approach?

Thank you,

Robert

 

Hi,
I have a grid that is populated in the event NeedDataSource when the page is loaded. When selecting an item from a combo, the other is a populated combo, and now gives an error 500.
I did several tests and when I populate the grid with up to 41 records, works, but if my grid has more than 41 records this error occurs ...
This grid has image and textbox in the ItemTemplate ...
Can anyone help me urgently?

Error:

Telerik.Web.UI.WebResource.axd?_TSM_HiddenField_=ctl00_RadScriptManager1_HiddenField&compress=1&_TSM_CombinedScripts_=%3b%3bSystem.Web.Extensions%2c+Version%3d3.5.0.0%2c+Culture%3dneutral%2c+PublicKeyToken%3d31bf3856ad364e35%3apt-BR%3a553a4a13-b3a5-4e6b-a152-b131051f1788%3aea597d4b%3ab25378d2%3bTelerik.Web.UI%2c+Version%3d2009.2.701.35%2c+Culture%3dneutral%2c+PublicKeyToken%3d121fae78165ba3d4%3apt-BR%3a7e598a31-3beb-49a1-914c-5f530240f0ea%3a16e4e7cd%3af7645509%3a24ee1bba%3ae330518b%3a1e771326%3ac8618e41%3aed16cbdc%3a874f8ea2%3a19620875%3a33108d14%3abd8f85e4%3a58366029%3aaa288e2d%3ae4f8f289, line 15 character 9936

Hi,
I am Currently working on GridDropdownlist column ,here am trying to bind datasource  to the GridDropdown column in the Item DataBound event.But it is coming as empty..Please suggest me ,where am i doing wrong.

Here is my Code:

ASPX

 

 

<asp:UpdatePanel runat="server">

 

 

 

<ContentTemplate>

 

 

 

<telerik:RadGrid ID="RadGrid1" runat="server" OnNeedDataSource="RadGrid1_NeedDataSource"

 

 

 

OnItemDataBound="RadGrid1_ItemDataBound" GridLines="None">

 

 

 

<MasterTableView AutoGenerateColumns="False">

 

 

 

<EditFormSettings ColumnNumber="2" CaptionFormatString="Edit details for ProductName with ID {0}"

 

 

 

CaptionDataField="DeptName">

 

 

 

<FormTableItemStyle Wrap="False"></FormTableItemStyle>

 

 

 

<FormCaptionStyle></FormCaptionStyle>

 

 

 

<FormMainTableStyle CellSpacing="0" CellPadding="3" Width="100%" />

 

 

 

<FormTableStyle GridLines="Horizontal" CellSpacing="0" CellPadding="2" CssClass="module"

 

 

 

Height="110px" Width="100%" />

 

 

 

<FormTableAlternatingItemStyle Wrap="False"></FormTableAlternatingItemStyle>

 

 

 

<FormStyle Width="100%" BackColor="#EEF2EA"></FormStyle>

 

 

 

<EditColumn UpdateText="Update record" UniqueName="EditCommandColumn1" CancelText="Cancel edit">

 

 

 

</EditColumn>

 

 

 

<FormTableButtonRowStyle HorizontalAlign="Right" CssClass="EditFormButtonRow"></FormTableButtonRowStyle>

 

 

 

</EditFormSettings>

 

 

 

<Columns>

 

 

 

<telerik:GridEditCommandColumn></telerik:GridEditCommandColumn>

 

 

 

 

<telerik:GridRatingColumn DataField="Rating" HeaderText="Rating">

 

 

 

<HeaderStyle Width="250px" />

 

 

 

</telerik:GridRatingColumn>

 

 

 

<telerik:GridAttachmentColumn MaxFileSize="1048576" EditFormHeaderTextFormat="Upload File:"

 

 

 

HeaderText="Download" AttachmentDataField="BinaryData" FileNameTextField="AttachmentFile"

 

 

 

DataTextField="AttachmentFile" UniqueName="AttachmentFile">

 

 

 

</telerik:GridAttachmentColumn>

 

 

 

<telerik:GridDropDownColumn UniqueName="DeptName" DataField="DeptName" ListTextField="DeptName" ListDataMember="DeptName"

 

 

 

SortExpression="DeptName" DropDownControlType="DropDownList" HeaderText="RadComboBox Column">

 

 

 

</telerik:GridDropDownColumn>

 

 

 

 

</Columns>

 

 

 

</MasterTableView>

 

 

 

</telerik:RadGrid>

 

 

 

</ContentTemplate>

 

 

 

</asp:UpdatePanel>

 

C#

private

 

 

DataTable BindData()

 

{

 

 

DataTable dt = new DataTable();

 

 

 

DataColumn dc = new DataColumn("Rating");

 

dt.Columns.Add(dc);

 

 

DataColumn dc1 = new DataColumn("AttachmentFile");

 

dt.Columns.Add(dc1);

 

 

DataColumn dc2 = new DataColumn("DeptName");

 

dt.Columns.Add(dc2);

 

 

DataRow dr = dt.NewRow();

 

dr[dc] = 3.5;

dr[dc1] =

 

"Image1";

 

dr[dc2] =

 

"HR";

 

dt.Rows.Add(dr);

 

 

return dt;

 

}

protected

 

 

void RadGrid1_NeedDataSource(object sender, Telerik.Web.UI.GridNeedDataSourceEventArgs e)

 

{

RadGrid1.DataSource = BindData();

 

}

 

 

protected void RadGrid1_ItemDataBound(object sender, Telerik.Web.UI.GridItemEventArgs e)

 

{

 

 

 

if (e.Item is GridEditableItem && e.Item.IsInEditMode)

 

{

 

 

GridEditableItem editedItem = e.Item as GridEditableItem;

 

 

 

GridEditManager editMan = editedItem.EditManager;

 

 

 

GridDropDownListColumnEditor editor = (GridDropDownListColumnEditor)(editMan.GetColumnEditor("DeptName"));

 

 

 

DropDownList ddList = editor.DropDownListControl;

 

ddList.DataSource = AssignDataSourceToDropDown();

ddList.DataTextField =

 

"DeptName";

 

ddList.DataValueField =

 

"DeptId";

 

ddList.DataBind();

}

　

　

 

}

 

 

private DataTable AssignDataSourceToDropDown()

 

{

 

 

DataTable dt = new DataTable();

 

 

 

DataColumn dc = new DataColumn("DeptName");

 

 

 

DataColumn dc1 = new DataColumn("DeptId");

 

dt.Columns.Add(dc);

dt.Columns.Add(dc1);

 

 

DataRow dr = dt.NewRow();

 

 

dr[dc] =

 

"HR";

 

dr[dc1] =

 

"1";

 

dt.Rows.Add(dr);

 

dr = dt.NewRow();

 

dr[dc] =

 

"PF";

 

dr[dc1] =

 

"2";

 

dt.Rows.Add(dr);

 

dr = dt.NewRow();

 

dr[dc] =

 

"Admin";

 

dr[dc1] =

 

"3";

 

dt.Rows.Add(dr);

 

dr = dt.NewRow();

 

dr[dc] =

 

"TTG";

 

dr[dc1] =

 

"4";

 

dt.Rows.Add(dr);

 

 

 

return dt;

 

}


Regards,
Sreekanth

I'm trying to achieve a different visual style within the combo box...

Notice the word "Yes" and the rest of the wording in a paler color .

Thanks

Hello,
               
              Recently i am working with RadButton when we apply skin to it and run it. It is not diplayed properly it is Displayed like Broken
Button, i am  sending image of the button with this mail..  Pls Respond...


   
      



 

Does anyone have any idea how I might show the current time in a timeline view?

I'm not talking about the header. I have a client who wants to see a view of the day in timeline view with a marker showing the place in the day, like this.

I know it can't be done out of the box, but I was wondering if anyone out there had any ideas about how it might be achieved.

--
Stuart

Hi All,

Just a bug report with the MaxHeight setting of the combobox. If one or more items in the combobox are multiline the MaxHeight fails, as it calculates assuming one line per item.

Not majorly urgent but means you need to manually set the 'Height' setting instead of using the recommended 'MaxHeight' setting.

Cheers,
- Will

Hello,

I have set the height of my combo in CSS but when I check the items in the dropdown I would like the items to be vertically aligned to the top of the INPUT and to wrap. Here is the CSS I am using (which does correctly set the height but does not align or wrap the selected items.
I also attached an image that show the selected items center aligned. If I selected one more item then the input will show "5 items checked" what I would want is for the input to wrap the 5th item and then once no more items could be displayed the "5 items checked" will display.
Thank you!

Hello,
I'm going to implement a grid's CardView feature and create a grid from server side. This is what I do:

MasterTableView.ItemTemplate = new CardViewItemTemplate(owner.ZSheet, owner.CardLayout);
MasterTableView.EditItemTemplate = new CardViewEditItemTemplate(owner.ZSheet, owner.CardLayout);

Each template is going to contain a custom control which is actually HtmlTable descendant which contains Label controls in ItemTemplate and editor controls like TextBox and so on in EditItemTemplate. Everything is clear with ItemTemplate but in EditItemTemplate I need to implement IBindableTemplate. Any ideas of how it should be done?
I would appreciate any sample of how CardView templates are created from codebehind.

telerik ver = 2011.2.915.40 runtime = v4.0.30319

My user got this error "Exception of type 'System.Web.HttpUnhandledException' was thrown."
and this all the error

Stack Trace:
at System.Web.UI.Page.HandleError(Exception e)
at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
at System.Web.UI.Page.ProcessRequest(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
at System.Web.UI.Page.ProcessRequest()
at System.Web.UI.Page.ProcessRequestWithNoAssert(HttpContext context)
at System.Web.UI.Page.ProcessRequest(HttpContext context)
at ASP.task_aspx.ProcessRequest(HttpContext context)
at System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()
at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)

ToString:
System.Web.HttpUnhandledException (0x80004005): Exception of type 'System.Web.HttpUnhandledException' was thrown. ---> System.ArgumentOutOfRangeException: Index was out of range. Must be non-negative and less than the size of the collection.
Parameter name: index
at System.Collections.CollectionBase.System.Collections.IList.get_Item(Int32 index)
at Telerik.Web.UI.GridGroupByExpressionCollection.get_Item(Int32 index)
at Telerik.Web.UI.GridGroupPanel.Ungroup(String index)
at Telerik.Web.UI.RadGrid.RaisePostBackEvent(String eventArgument)
at System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument)
at System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData)
at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
at System.Web.UI.Page.HandleError(Exception e)
at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
at System.Web.UI.Page.ProcessRequest(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
at System.Web.UI.Page.ProcessRequest()
at System.Web.UI.Page.ProcessRequestWithNoAssert(HttpContext context)
at System.Web.UI.Page.ProcessRequest(HttpContext context)
at ASP.task_aspx.ProcessRequest(HttpContext context)
at System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()
at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)

and here my grid on the page :
the problem are..i can't replicate it again,any help?