Simple example. Note the formatting in the HyperLink NavigateURL:
<telerik:GridTemplateColumn>
<ItemTemplate>
<asp:Label ID="lblProjectName" runat="server" Text='<%# Bind("ProjectName") %>'></asp:Label><br />
<asp:HyperLink ID="HyperLink1" runat="server"
NavigateUrl='<%# string.format("ScanSand2.aspx?SOPNUMBE={0}&soptype={1}",Eval("sopnumbe"),Eval("soptype")) %>'
Text='<%# Bind("sopnumbe") %>' />
</ItemTemplate>
<EditItemTemplate>
<asp:TextBox ID="txtProjectName" runat="server" Text='<%# Bind("ProjectName") %>' />
</EditItemTemplate>
</telerik:GridTemplateColumn>
Example with a formatted date:
<telerik:GridTemplateColumn>
<ItemTemplate>
<asp:Label ID="lblPostDate" Text='<%# String.Format("{0:MM/dd/yyyy}", DataBinder.Eval(Container.DataItem, "PostDate"))%>' runat="server"></asp:Label><br />
<asp:Label ID="lblUserName" Text='<%# Bind("UserName")%>' runat="server"></asp:Label>
</ItemTemplate>
</telerik:GridTemplateColumn>