Is it possible to toggle column visibilty/editing on a grid with a declarative datasource?

We have a requirement to show/hide certain columns in tables we'd like to display using a RadGrid.

We also have a requirement to enable/disable the editing of certain columns in tables we'd like to display using a RadGrid.

There is a master table in the database that stores the tablename, columnname, visible (0 or 1), editable (0 or 1) data.

Is it possible to use the values in that master table to control which columns are visible/hidden and to enable/disable the editing of certain columns in a RadGrid that has a declarative datasource?

when i bind grid without  ItemDataBound it bind fine. But when i use it , then it show the Exception of type 'System.OutOfMemoryException' was thrown. error.

Here is my code

   protected void griddetails_ItemDataBound(object sender, Telerik.Web.UI.GridItemEventArgs e)
        {
            if (e.Item is GridDataItem)
            {
                griddetails.MasterTableView.RenderColumns[4].Display = false;
                griddetails.MasterTableView.RenderColumns[5].Display = false;
                griddetails.MasterTableView.RenderColumns[6].Display = false;
                griddetails.MasterTableView.RenderColumns[7].Display = false;

                griddetails.MasterTableView.RenderColumns[10].Display = false;
                griddetails.MasterTableView.RenderColumns[11].Display = false;
                griddetails.MasterTableView.RenderColumns[26].Display = false;
                griddetails.MasterTableView.RenderColumns[30].Display = false;
                griddetails.MasterTableView.RenderColumns[31].Display = false;
                griddetails.MasterTableView.RenderColumns[32].Display = false;

                //if (e.Item.RowIndex > -1)                                       // i comment this part but still not working
                //{
                RadComboBox ddlMT = new RadComboBox();
                ddlMT.ID = "ddlMT";
                   
                ddlMT.Filter = RadComboBoxFilter.Contains;
                ddlMT.DataSource = Bll.Bal_BindAllEmployeewithRole("ALL", Session["MTUseId"], e.Item.Cells[4].Text, e.Item.Cells[5].Text, "MT", null, null);
                ddlMT.DataTextField = "EmployeeName";
                ddlMT.DataValueField = "Empid";
                ddlMT.DataBind();
                e.Item.Cells[20].Controls.Add(ddlMT);

                RadComboBox ddlQA = new RadComboBox();
                ddlQA.ID = "ddlQA";
                   
                ddlQA.Filter = RadComboBoxFilter.Contains;
                ddlQA.DataSource = Bll.Bal_BindAllEmployeewithRole("ALL", Session["MTUseId"], e.Item.Cells[4].Text, e.Item.Cells[5].Text, "QA", null, null);
                ddlQA.DataTextField = "EmployeeName";
                ddlQA.DataValueField = "Empid";
                ddlQA.DataBind();
                e.Item.Cells[21].Controls.Add(ddlQA);

                RadComboBox ddlMT2 = new RadComboBox();
                ddlMT2.ID = "ddlMT2";
                  
                ddlMT2.Filter = RadComboBoxFilter.Contains;
                ddlMT2.DataSource = Bll.Bal_BindAllEmployeewithRole("ALL", Session["MTUseId"], e.Item.Cells[4].Text, e.Item.Cells[5].Text, "MT2", null, null);
                ddlMT2.DataTextField = "EmployeeName";
                ddlMT2.DataValueField = "Empid";
                ddlMT2.DataBind();
                e.Item.Cells[22].Controls.Add(ddlMT2);

                RadComboBox ddlQA2 = new RadComboBox();
                ddlQA2.ID = "ddlQA2";
                  
                ddlQA2.Filter = RadComboBoxFilter.Contains;
                ddlQA2.DataSource = Bll.Bal_BindAllEmployeewithRole("ALL", Session["MTUseId"], e.Item.Cells[4].Text, e.Item.Cells[5].Text, "QA2", null, null);
                ddlQA2.DataTextField = "EmployeeName";
                ddlQA2.DataValueField = "Empid";
                ddlQA2.DataBind();
                e.Item.Cells[23].Controls.Add(ddlQA2);

                RadComboBox ddlQC = new RadComboBox();
                ddlQC.ID = "ddlQC";
                  
                ddlQC.Filter = RadComboBoxFilter.Contains;
                ddlQC.DataSource = Bll.Bal_BindAllEmployeewithRole("ALL", Session["MTUseId"], e.Item.Cells[4].Text, e.Item.Cells[5].Text, "QC", null, null);
                ddlQC.DataTextField = "EmployeeName";
                ddlQC.DataValueField = "Empid";
                ddlQC.DataBind();
                e.Item.Cells[24].Controls.Add(ddlQC);

               
            }
            //}
        }
   
I think i am creating the control dynamic here it may be due to this. This code bind upto 971 records but after that it show error.

if there is another way to create it, tell me. I want to bind thru it server side not clientside bcoz it can't fullfill my need.

Hi

My DataForm displays data in edit mode just fine, with a selection of textboxs and RadDropDownList's.

The RadDropDownList bind via the RadDataForm1_ItemDataBound event.

But when I am in insert mode how do I populate/bind  my  RadDropDownList in code behind?

The ItemDataBound doesn't fire

Many Thanks

Mark

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How is that possible in C#?

It is urgent therefore a quick response would be greatly appreciated.

Thanks

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