Programmatic/Dynamic control of ReadOnly for GridTemplateColumn

[Carl]

Is it possible to change the ReadOnly property of a GridTemplateColumn by dynamic programmatic control?

If so, what is the recommended way to do this? I looked for a code snippet but have not found it yet...

I want to develop a *.ascx control built using Telerik RadGrid such that there are various GridTemplateColumns for which I can dynamically change the ReadOnly status. Then I can put the *.ascx control with ReadOnly=true on certain *.aspx web pages and ReadOnly=False on other *.aspx web pages.

Thanks

CT

[Shinu]

Hi Carl,

Yes, you can change the ReadOnly property of the GridTemplateColumn dynamically. I guess you are having a RadGrid with several Template columns in an ascx and calling the ascx in different aspx pages. The ReadOnly property of the Template Columns will be differing in different aspx pages depending on some condition.

Here I have set the ReadOnly property of the Template column depending on the bool value that I have set in the corresponding aspx page.

CS:

protected void Page_Load(object sender, EventArgs e)
    {
        bool ReadOnly = false;

       //access UserControl
        UserControl usCtl = (UserControl)this.FindControl("WebUserControl1");

      // access Grid in the UserControl
       RadGrid Grid = (RadGrid)usCtl.FindControl("RadGrid1");
        if (ReadOnly)
        {
            foreach (GridColumn col in Grid.MasterTableView.Columns)
            {
                if (col.ColumnType == "GridTemplateColumn")
                {
                   // Setting the ReadOnly Property
                    GridTemplateColumn tempCol = (GridTemplateColumn)col;
                    tempCol.ReadOnly = ReadOnly;
                }
            }
        }


    }

Thanks
Shinu

[Carl]

Thanks for the advice. Here's the relevant code for an alternative approach that I'm using now:

        Protected Sub Page_Load(ByVal so As Object, ByVal sea As System.EventArgs) Handles Me.Load

            If Me.IsOnAdminPage AndAlso Not Me.IsPostBack Then
                Dim col As New Telerik.Web.UI.GridTemplateColumn
                col = CType(telRadGrid.Columns.FindByUniqueName("MyCol1"), GridTemplateColumn)
                col.ReadOnly = False
                col = CType(telRadGrid.Columns.FindByUniqueName("MyCol2"), GridTemplateColumn)
                col.ReadOnly = False
                col = CType(telRadGrid.Columns.FindByUniqueName("MyCol3"), GridTemplateColumn)
                col.ReadOnly = False
            End If

This does work OK for me (although I haven't yet tested with AJAX turned on). Note that the default is to have the control on a regular user page where ReadOnly = True for the GridTemplateColumns, and I'm now testing for IsPostBack and for presence of the control on an admin page before turning off the ReadOnly property, ie, resetting it to False. If anybody has any suggestions for a more efficient approach, then please let me know. Thanks.