在asp.net中添加图像到链接按钮。

<asp:GridView ID="Grid_Organisationtable" runat="server"  CssClass="string"
             SelectedIndex="0" DataKeyNames="OrganisationID"
            ShowHeaderWhenEmpty="True" OnRowDeleting="Grid_Organisationtable_RowDeleting" OnRowEditing="Grid_Organisationtable_RowEditing"
            AutoGenerateColumns="false" Height="95px" Width="492px">     
<Columns>
                   <asp:TemplateField HeaderText="Edit Controls" ItemStyle-Width="15%">
                        <ItemTemplate>
                            <asp:ImageButton ImageUrl="~/Styles/Images/Edit.jpg" CommandName="Edit" runat="server"
                                ID="btn_Edit" ToolTip="Edit Organisation" />
     <asp:LinkButton ID="LinkButton1" CommandArgument='<%# Eval("OrganisationID") %>' CommandName="Delete" runat="server">delete</asp:LinkButton>
     </ItemTemplate>
                        <ItemStyle Width="15%" />
                    </asp:TemplateField>
<asp:GridView ID="Grid_Organisationtable" runat