Using user control in radgrid

[Joe]

I am trying to insert a user control into an item template of a radgrid to display data dynamically, but I keep getting an object reference not set to an instance of an object error when it tries to set the property container.

Below is a snippet of where I am using the user control in the radgrid:

<%@ Register Src="PropertyContainer.ascx" TagName="PropertyContainer" TagPrefix="uc1" %>


<radG:RadGrid ID="employees" OnNeedDataSource="EmployeesGrid_NeedDataSource" runat="server" AutoGenerateColumns="false">
     <Columns>
          <radG:GridTemplateColumn>
              <ItemTemplate>
                  <uc1:PropertyContainer ID="PropertyContainer" runat="server" />
              </ItemTemplate>
          </radG:GridTemplateColumn>
      </Columns>

Below is a snippet of the code behind:

protected void Page_Load(object sender, EventArgs e)

{

              

}


  

public void EmployeesGrid_NeedDataSource(object source, Telerik.WebControls.GridNeedDataSourceEventArgs e)

{

     foreach (Employee emp in Employees)

     {

           PropertyContainer.SetProperties(emp.Properties);

     }

)

The employee's properties are not null, and the fields will not be editable.

Any assistance would be appreciated.  Thanks.

Joe

[Shinu]

Hello Joe,

You can try the following approach to achieve the same.

• Set the DataSource in the NeedDataSource Event.
• In the ItemDataBound access the UserControl and set the property.

Here is a Sample code.

protected void RadGrid1_NeedDataSource(object sender, GridNeedDataSourceEventArgs e)
{
RadGrid1.DataSource = Employees;
}
protected void RadGrid1_ItemDataBound(object sender, GridItemEventArgs e)
{
    if (e.Item is GridDataItem)
    {
        GridDataItem item = (GridDataItem)e.Item;
        Employee emp = (Employee )item.DataItem;
        UserControl_PropertyContainer uc = (UserControl_PropertyContainer )item.FindControl(PropertyContainer");
        uc.setProperties(emp.Properties);
    }
}

Thanks,
Shinu.

[Joe]

Thank you Shinu for your reply; unfortunately that did not work.

The user control is still null giving me the object reference not set to an instance of an object error.  Do you have any other suggestions to try?

Thanks
Joe

[Tsvetina]

Hello Joe,

Please, paste the code that you use to access the user control on ItemDataBound. It should be available there. In the meantime, please, take a look at this help article dealing with accessing the items in a RadGrid:
Accessing cells and rows

Greetings,
Tsvetina
the Telerik team