[Solved] How to hide columns in a grid but show them during edit

[Ryan Donahue]

My working environment is VS 2008, .Net 3.5, and RadControls for ASP .NET Q3 2007.

I have a grid displaying on my page.  each record has 30 columns.  I want the user to be able to edit these values in the edit popup box but I obviously don't want to try to display the grid w/ all 30 columns.  Right now I am setting the visibility of the columns in the PreRender which hides the unwanted columns when the grid is not in edit mode and shows all the columns in the edit popup.  Unfortunately, this also shows all the columns in the grid behind the edit window.  Is there someway to specifiy that I only want to change the visibility of the edit windows columns instead of the MasterTableView?

[Martin]

Hello Ryan,

I would suggest you set the visibility of the columns using the ColumnCreated event handler:

protected void RadGrid1_ColumnCreated(object sender, GridColumnCreatedEventArgs e)
    {
        if (e.Column.UniqueName == "MyColumnName")
        {
            e.Column.Visible = false;
        }
    }

Please note that this approach works for auto-generated columns only. For declarative grid columns you can use the PreRender event handler:

 protected void RadGrid1_PreRender(object sender, EventArgs e)
    {
        foreach (GridColumn column in RadGrid1.Columns)
        {
            if (column.UniqueName == "MyColumnName")
            {
                (column as GridColumn).Visible = false;
                break;
            }
        }
        RadGrid1.Rebind();
    }

You can review this help topic for more details on how to customize the columns programmatically.

Regards,
Martin
the Telerik team

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