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header of the grid to group the columns

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Grid

This is a migrated thread and some comments may be shown as answers.

needy asked on 29 Dec 2010, 05:12 PM

Hi
I'm using the telerik RadGrid. What I want to do is to add a row in the header of the grid to group the columns which has checboxes in it.
Currently I have the columns as GridCheckbox column in the masterview table.
Example:

<MasterTableView >
<Columns>
        <telerik:GridCheckBoxColumn DataField="1" HeaderText="1" />
        <telerik:GridCheckBoxColumn DataField="2" HeaderText="2" />
        <telerik:GridCheckBoxColumn DataField="3" HeaderText="3" />

All I want to do is just add a customer header that show two or more column headers grouped togeather. I don't need to group any data.
like

header 1: group Header
header 2: 1 2 3
and then the values of the columns 1 2 and 3 in check boxes

How can i do this?
Does anyone have any idea?

4 Answers, 1 is accepted

answered on 03 Jan 2011, 11:19 AM

I got my answer from another thread in the form from the guy called Jason and it worked from me. He says

protected void rg_PreRender(object sender, EventArgs e)

{

//get the current header

GridItem[] header = rg.MasterTableView.GetItems(GridItemType.Header);

//get the current THead element

GridTHead head = ((GridTHead)header[0].Parent.Controls[0].Parent);

//Get the GridHeaderItem from the THead

GridHeaderItem currentHeaderItem = (GridHeaderItem)head.Controls[0];

//Clear all GridHeaderItems

head.Controls.Clear();

//create a new GridHeaderItem which will be the new row

GridHeaderItem newHeaderItem = new GridHeaderItem(rg.MasterTableView, 0, 0);

/* My specific implementation for adding new row

newHeaderItem.Cells.Add(new GridTableHeaderCell() { Text = " " });

newHeaderItem.Cells.Add(new GridTableHeaderCell() { Text = " ", Width = new Unit(230, UnitType.Pixel) });

for (int i = 0; i < statuses.Count; i++)

{

Entities.AssessmentStatus status = statuses[i];

GridTableHeaderCell cell = new GridTableHeaderCell()

{

Text = status.Name,

ColumnSpan = 2,

HorizontalAlign = HorizontalAlign.Center

};

if (i != statuses.Count - 1)

cell.Width = new Unit(145, UnitType.Pixel);

newHeaderItem.Cells.Add(cell);

}

//Add back the GridHeaderItems in the order you want them to appear

head.Controls.Add(newHeaderItem);

head.Controls.Add(currentHeaderItem);

}