How to hide the column group

[Gabriel Boulianne]

Hello,

I want hide the column corresponding to the group.

For exemple, I have 3 column :

1    2    3
-------------
x    a    f
y    b    e
x    c    d

And i group by the first column :

1
    1    2    3
    -------------
x
    x    a    f
    x    c    d
y
    y    b    e

The first column is still visible, but not necessary,

is-it possible to hide this colomn, or i have to implements this feature ?

[Shinu]

Hello,

I tried following for a similar scenario, for hiding the column when it is grouped and again showing it when ungrouping.

CS:

    protected void RadGrid1_PreRender(object sender, EventArgs e)
    {
        if (RadGrid1.MasterTableView.GroupByExpressions.Count > 0)
        {
            RadGrid1.MasterTableView.GetColumnSafe(RadGrid1.MasterTableView.GroupByExpressions[0].GroupByFields[0].FieldName).Display = false;
        }
        else
        {
            foreach(GridColumn col in RadGrid1.MasterTableView.RenderColumns )
            {
                col.Display = true;
            }
        }
    }

Feel free to modify the code based on your requirement.

I hope this would help you also.
Shinu.

[Gabriel Boulianne]

Thanks Shinu,

The grouping is executed on client side, how to force a postback on grouping ?

Thanks,

Gabriel Boulianne

[Gabriel Boulianne]

What i say ? Sorry, i need coffee... The event is raised on server it's ok !

I just have a small error in generated jscript code :

Microsoft JScript runtime error: Sys.WebForms.PageRequestManagerServerErrorException: La référence d'objet n'est pas définie à une instance d'un objet.

Thanks for your help !

Gabriel Boulianne

[Gabriel Boulianne]

Ok thanks Shinu, i have modified your method :

protected void radGrid_PreRender(object sender, EventArgs e)
        {
            foreach (TelerikUI.GridBoundColumn col in radGrid.Columns)
            {
                col.Display = true;
            }

            foreach (TelerikUI.GridGroupByExpression groupByExp in radGrid.MasterTableView.GroupByExpressions)
            {
                string fieldName = groupByExp.GroupByFields[0].FieldName;

                foreach (TelerikUI.GridBoundColumn column in radGrid.Columns)
                {
                    if (column.DataField == fieldName)
                    {
                        column.Display = false;
                        break;
                    }
                }
            }
        }

That's work correctly !