Allow insert but not update

[Zac]

I'm using automatic inserts/updates with a grid bound to an ObjectContainerDataSource.  Some of the columns are marked as readonly in the grid and should not be updated.  However, on an insert, users should specify values for these columns.  Is there an easy way to mark a column as read-only for updates but read-write for inserts?

Thanks,

Zac

[Zac]

As an alternate approach, I tried removing the ReadOnly attribute from the columns and then disabling them when in edit mode.  Just to clarify - the user should be able to specify values only on insert, but not on update.  But this isn't working.  The columns are still editable on update.  Here's a sample:

 void Grid_ItemCommand(object source, GridCommandEventArgs e)
        {
            if( e.CommandName == RadGrid.EditCommandName)
            {
                GridEditableItem gridRow = e.Item as GridEditableItem;

                // Username cannot be changed.
                TableCell userNameCell = gridRow["UserName"];
                userNameCell.Enabled = false;
                userNameCell.Visible = false;
            }
        }

[Shinu]

Hi Zac,

You can try the following approach to hide/disable  the column when the Grid is in edit mode and enable/show them when the Grid is insert mode.

CS:

 protected void RadGrid1_ItemDataBound(object sender, Telerik.Web.UI.GridItemEventArgs e)
    {
        if((e.Item is GridEditableItem)&&(e.Item.IsInEditMode)&&(!e.Item.OwnerTableView.IsItemInserted))
        {
            GridEditableItem editItem = (GridEditableItem)e.Item;
            TableCell userNameCell = (TableCell)editItem["ProductName"];
            userNameCell.Enabled = false;
            userNameCell.Visible = false;
        }
    }

Thanks
Shinu.