or
foreach (GridEditFormItem EdItem in rgRelMaterial.Columns) { EdItem.Width = System.Web.UI.WebControls.Unit.Pixel(300); }
<telerik:RadGrid ID="radGridData" runat="server" ShowGroupPanel="true" OnNeedDataSource="radGridData_NeedDataSource"> <GroupingSettings CaseSensitive="false" ShowUnGroupButton="true" /> <MasterTableView EnableLinqGrouping="true" AllowFilteringByColumn="true" GroupLoadMode="Client" /> <ClientSettings AllowDragToGroup="true" /> </telerik:RadGrid>radGridData.MasterTableView.FilterExpression

<telerik:GridTemplateColumn HeaderText="Links"> <ItemTemplate> <table cellpadding="0" cellspacing="0" border="0"> <tr> <td valign="middle" style="width:15px;"> <asp:HyperLink ID="imgLink" runat="server" NavigateUrl="<%# bind('URL') %>"> <img alt="<%# eval("LinkName") %>" src="<%# eval("ImageURL") %>" border="0" /></asp:HyperLink> </td> <td valign="middle"> <asp:HyperLink runat="server" ID="txtLink" NavigateUrl="<%# bind('URL') %>"> <%#Eval("LinkName")%></asp:HyperLink> </td> </tr> </table> </ItemTemplate> </telerik:GridTemplateColumn>