Add Checkbox Control To Special Header Group

[shahab]

Hi dude,
I have a RadGrid in Asp.net with three groups. I want to Have a checkbox on the last group header. I do not need to have checkbox in other group header. WHat should I do?

Tnx alot

[Shinu]

Hi shahab,

Looking at your post, I figure out that you need to add the CheckBox to the last group header. Although your attachment depicts as if you want to remove the checkboxes in red. Anyways use following code to add CheckBox on the last group header.

C#:

protected void RadGrid1_PreRender(object sender, EventArgs e)
{
   foreach(GridGroupHeaderItem headeritem in RadGrid1.MasterTableView.GetItems(GridItemType.GroupHeader))
   {
     CheckBox chk = new CheckBox();
     if (headeritem.GroupIndex.Split('_').Length == 3)//third Group Header
     {
       (headeritem as GridGroupHeaderItem).DataCell.Controls.Add(chk);
     }
  }
}

Hope this helps.

Thanks,
-Shinu.

[shahab]

Hi,
Tnx Shinu. It is ok! But There is a problem, When I add checkbox to the third header rendered header Group title was removed. There is no group header. Group Header text is in "headeritem.DataCell.Text" property. When add control to headeritem, title is removed.

[Shinu]

Hi Shahab,

The following code snippet shows one option to have both the control and groupheader text together.

C#:

protected void RadGrid1_PreRender(object sender, EventArgs e)
    {

        foreach (GridGroupHeaderItem headeritem in RadGrid1.MasterTableView.GetItems(GridItemType.GroupHeader))
        {
            CheckBox chk = new CheckBox();
            if (headeritem.GroupIndex.Split('_').Length == 3)//third Group Header
            {
                string text = headeritem.DataCell.Text;
                (headeritem as GridGroupHeaderItem).DataCell.Controls.Add(chk);
                chk.Text = text;
            }
        }
    }

Thanks,
-Shinu.

[shahab]

Hi,
1.I think this solution is very bad. Telerik should prepare access to group items with index or name of group.
2.Now I want to access to DataKeyNames from groupheaderitem. For example "codetest" and "uniqcode".

 foreach (GridGroupHeaderItem headeritem in ResultTestRadGrid.MasterTableView.GetItems(GridItemType.GroupHeader))
            {
                if (headeritem.GroupIndex.Split('_').Length == 3
                    && ((CheckBox)(headeritem as GridGroupHeaderItem).DataCell.Controls[0]).Checked)
                {
                    //ResultTestSqlDataSource.UpdateParameters["codetest"].DefaultValue = headeritem.GetDataKeyValue("codetest").ToString();
                    //ResultTestSqlDataSource.UpdateParameters["uniqcode"].DefaultValue = item.GetDataKeyValue("Uniqcode").ToString();
                    //ResultTestSqlDataSource.Update();
                }
            }
            ResultTestRadGrid.Rebind();

3.How Can I check checbox.Checked? this line of code is not ok:

((CheckBox)(headeritem as GridGroupHeaderItem).DataCell.Controls[0]).Checked)

Tnx alot.....

[Tsvetina]

Hello Shahab,

I would recommend you to use the GridGroupHeaderTemplate to declare the checkbox and the text that you want to be shown. See this demo:
Grid Group Header and Footer Templates

Then, you could access all headers in the RadGrid PreRender event and hide the checkboxes which you do not want to be visible. If you use the GetItems method, the headers should be returned in their order of appearance in RadGrid:

RadGrid1.MasterTableView.GetItems(GridItemType.GroupHeader) //this returns an array of headers

Kind regards,
Tsvetina
the Telerik team

[shahab]

Hi
1.I can not solve my problem. mentioned method is not ok becuase I have 3 group and I want to add Checkbox To the 3th groupHeader. With Grid Group Header and Footer Templates , CheckBoxes add to all groupHeader

      <GroupHeaderTemplate>
            <asp:Label runat="server" ID="Label5" Text='<%# (((GridGroupHeaderItem)Container).AggregatesValues["name"]) + "" + (((GridGroupHeaderItem)Container).AggregatesValues["Sname"])  +""+ (((GridGroupHeaderItem)Container).AggregatesValues["nametest"])%>'>
                </asp:Label>
                <asp:CheckBox ID="IsOkCheckBox" runat="server" Text="Hi" />
            </GroupHeaderTemplate>

I think to solve this problem I should hide other checkboxes:

 foreach (GridGroupHeaderItem headeritem in ResultTestRadGrid.MasterTableView.GetItems(GridItemType.GroupHeader))
        {            
            if (headeritem.GroupIndex.Split('_').Length != 3)
            {
                ((CheckBox)headeritem.FindControl("IsOkCheckBox")).Visible = false;
            }            
        }

however I think it is a very bad solution!:((

2.I just add one Label with different  "(((GridGroupHeaderItem)Container).AggregatesValues["???"])". Items are connected with "+" but items are displayed in different groupHeader!!!!
Please see the files.

[Tsvetina]

Hello Shahab,

As mentioned in my prevous post, by specifying the template, you get the checkbox to show in each header but you could access and hide the unneeded checkboxes in the ItemCreated or PreRender event of the grid.

From your second screenshot I could not understand what exactly happens in your grid headers. Are they not bound to the aggregate values as shown in the demo? What is the expected output?

All the best,
Tsvetina
the Telerik team