Case Sensitive Grouping

RadGrid supports grouping of items based on the value of a particular column. To group these items in a case sensitive order you can set GroupingSettings.CaseSensitive property to true. Using this property you will make the grid grouping and filtering case sensitive.

<telerik:RadGrid RenderMode="Lightweight" ID="RadGrid1" runat="server" OnNeedDataSource="RadGrid1_NeedDataSource" ShowGroupPanel="true">
    <GroupingSettings CaseSensitive="true" />
    <ClientSettings AllowDragToGroup="True" />
</telerik:RadGrid>

If you use case sensitive grouping and the grid is populated through NeedDataSource event or with SqlDataSource you should make the data table CaseSensitive .

When you are populating the grid through NeedDataSource and at the same time you need case sensitive grouping you can use the code snippet below:

protected void RadGrid1_NeedDataSource(object sender, Telerik.Web.UI.GridNeedDataSourceEventArgs e)
{
    DataTable table = new DataTable();
    table.Columns.Add("ID");
    table.Columns.Add("Item");
    table.Columns.Add("Date", typeof(DateTime));
    for (int i = 1; i < 8; i++)
    {
        table.Rows.Add(i, "Item", DateTime.Now.AddDays(i));
    }
    for (int i = 1; i < 8; i++)
    {
        table.Rows.Add(i, "item", DateTime.Now.AddDays(i));
    }
    table.CaseSensitive = true;
    RadGrid1.DataSource = table;
}

Protected Sub RadGrid1_NeedDataSource(sender As Object, e As Telerik.Web.UI.GridNeedDataSourceEventArgs)
    Dim table As New DataTable()
    table.Columns.Add("ID")
    table.Columns.Add("Item")
    table.Columns.Add("Date", GetType(DateTime))
    For i As Integer = 1 To 7
        table.Rows.Add(i, "Item", DateTime.Now.AddDays(i))
    Next
    For i As Integer = 1 To 7
        table.Rows.Add(i, "item", DateTime.Now.AddDays(i))
    Next
    table.CaseSensitive = True
    RadGrid1.DataSource = table
End Sub

If you are using SqlDataSource you can make the grid grouping case sensitive with the following code:

protected void RadGrid1_NeedDataSource(object sender, Telerik.Web.UI.GridNeedDataSourceEventArgs e)
{
    DataView dv = (DataView)sqlDS1.Select(DataSourceSelectArguments.Empty);
    DataTable dt = new DataTable();
    dt = dv.ToTable();
    dt.CaseSensitive = true;
    RadGrid1.DataSource = table;
}

Protected Sub RadGrid1_NeedDataSource(sender As Object, e As Telerik.Web.UI.GridNeedDataSourceEventArgs)
    Dim dv As DataView = DirectCast(sqlDS1.[Select](DataSourceSelectArguments.Empty), DataView)
    Dim dt As New DataTable()
    dt = dv.ToTable()
    dt.CaseSensitive = True
    RadGrid1.DataSource = Table
End Sub