I have this RAD Grid
<
telerik:RadGrid
ID
=
"gvMembers"
runat
=
"server"
AutoGenerateColumns
=
"false"
OnNeedDataSource
=
"gvMembers_NeedDataSource"
AllowSorting
=
"true"
AllowPaging
=
"true"
PageSize
=
"10"
AllowAutomaticUpdates
=
"true"
AllowAutomaticInserts
=
"true"
AllowAutomaticDeletes
=
"true"
OnItemCreated
=
"gvMembers_ItemCreated"
OnItemInserted
=
"gvMembers_ItemInserted"
OnPreRender
=
"gvMembers_PreRender"
OnInsertCommand
=
"gvMembers_InsertCommand"
OnItemDataBound
=
"gvMembers_ItemDataBound"
OnUpdateCommand
=
"gvMembers_UpdateCommand"
OnDeleteCommand
=
"gvMembers_DeleteCommand"
>
<
HeaderStyle
CssClass
=
"GridHeader"
/>
<
PagerStyle
Mode
=
"NextPrevNumericAndAdvanced"
/>
<
MasterTableView
AutoGenerateColumns
=
"false"
DataKeyNames
=
"UserID"
CommandItemDisplay
=
"Top"
InsertItemPageIndexAction
=
"ShowItemOnCurrentPage"
>
<
Columns
>
<
telerik:GridEditCommandColumn
></
telerik:GridEditCommandColumn
>
<
telerik:GridBoundColumn
DataField
=
"UserID"
HeaderText
=
"UserID"
ReadOnly
=
"true"
UniqueName
=
"UserID"
></
telerik:GridBoundColumn
>
<
telerik:GridBoundColumn
DataField
=
"FirstName"
HeaderText
=
"First Name"
SortExpression
=
"FirstName"
UniqueName
=
"firstname"
></
telerik:GridBoundColumn
>
<
telerik:GridBoundColumn
DataField
=
"FirstName"
HeaderText
=
"Last Name"
SortExpression
=
"LastName"
UniqueName
=
"lastname"
></
telerik:GridBoundColumn
>
<
telerik:GridBoundColumn
DataField
=
"UserName"
HeaderText
=
"User Name"
SortExpression
=
"UserName"
UniqueName
=
"username"
></
telerik:GridBoundColumn
>
<
telerik:GridBoundColumn
DataField
=
"EmailAddress"
HeaderText
=
"Email"
SortExpression
=
"EmailAddress"
UniqueName
=
"email"
></
telerik:GridBoundColumn
>
<
telerik:GridTemplateColumn
UniqueName
=
"TemplateColumn"
HeaderText
=
"Role"
>
<
ItemTemplate
>
<
asp:Label
ID
=
"Label1"
runat
=
"server"
Text='<%# DataBinder.Eval(Container.DataItem, "Role") %>'>
</
asp:Label
>
</
ItemTemplate
>
<
EditItemTemplate
>
<
asp:DropDownList
ID
=
"ddlRole"
runat
=
"server"
DataTextField
=
"Role1"
DataValueField
=
"RoleID"
></
asp:DropDownList
>
</
EditItemTemplate
>
</
telerik:GridTemplateColumn
>
<
telerik:GridButtonColumn
ConfirmText
=
"Delete this Member?"
ConfirmDialogType
=
"RadWindow"
ConfirmTitle
=
"Delete"
ButtonType
=
"PushButton"
Text
=
"Delete"
CommandName
=
"Delete"
/>
</
Columns
>
</
MasterTableView
>
</
telerik:RadGrid
>
I need to bind the asp dropdown list for my Update and Insert.
I tried this C# code:
protected void gvMembers_ItemDataBound(object sender, GridItemEventArgs e)
{
DropDownList ddl = (DropDownList)e.Item.FindControl("ddlRole");
ddl.SelectedValue = (string)DataBinder.Eval(e.Item.DataItem, "Role1").ToString();
}
But it gets an error message {"Object reference not set to an instance of an object."} when I try to view the web page.
What is the proper procedure to accomplish this?