头疼有关问题，怎么固定GridView模板列的宽度

        <asp:GridView ID="GVPublish" runat="server" CssClass="GridViewStyle" AutoGenerateColumns="False" Width="100%" EmptyDataText='<p style="text-align: center"><span style="color: #ff6600">*无数据*</span></p>' AllowPaging="True" OnPageIndexChanging="GVPublish_PageIndexChanging" PageSize="2" OnRowCommand="GVPublish_RowCommand"  >
                <FooterStyle CssClass="GridViewFooterStyle" />
                <RowStyle CssClass="GridViewRowStyle" />   
                <SelectedRowStyle CssClass="GridViewSelectedRowStyle" />

                <AlternatingRowStyle CssClass="GridViewAlternatingRowStyle" />
                <HeaderStyle CssClass="GridViewHeaderStyle" />
            <Columns>
                <asp:BoundField DataField="Title" HeaderText="标题" />
                <asp:BoundField DataField="ColumnID" HeaderText="所属栏目" />

                <asp:TemplateField HeaderText="编辑">
                    <HeaderStyle Width="40px"  />
                    <ItemTemplate>
                        <asp:ImageButton ID="btnEdit" runat="server"  ImageUrl="~/Images/btpaste.gif"  CommandName="btnEdit" CommandArgument='<%#DataBinder.Eval(Container,"DataItem.InfoID") %>'
                         />
                        
                    </ItemTemplate>
                    <ItemStyle HorizontalAlign="Center" Width="40px" />
                </asp:TemplateField>
                <asp:TemplateField HeaderText="删除">
                    <HeaderStyle Width="40px" />
                    <ItemTemplate>
                        <asp:ImageButton ID="btnDelete" runat="server" CommandName="btnDel" CommandArgument='<%#DataBinder.Eval(Container,"DataItem.InfoID") %>'
                         ImageUrl="~/Images/btdelete.gif" OnClientClick="return confirm('是否确定删除此文章？')" />
                    </ItemTemplate>
                    <ItemStyle HorizontalAlign="Center" Width="40px" />
                </asp:TemplateField>
                
            </Columns>
            <PagerTemplate>
             <asp:Label ID="lblPage" runat="server" Text='<%# "第" + (((GridView)Container.NamingContainer).PageIndex + 1)  + "页/共" + (((GridView)Container.NamingContainer).PageCount) + "页" %> '></asp:Label>
             <asp:LinkButton ID="lbnFirst" runat="Server" Text="首页"  Enabled='<%# ((GridView)Container.NamingContainer).PageIndex != 0 %>' CommandName="Page" CommandArgument="First" ></asp:LinkButton>
             <asp:LinkButton ID="lbnPrev" runat="server" Text="上一页" Enabled='<%# ((GridView)Container.NamingContainer).PageIndex != 0 %>' CommandName="Page" CommandArgument="Prev"  ></asp:LinkButton>
             <asp:LinkButton ID="lbnNext" runat="Server" Text="下一页" Enabled='<%# ((GridView)Container.NamingContainer).PageIndex != (((GridView)Container.NamingContainer).PageCount - 1) %>' CommandName="Page" CommandArgument="Next" ></asp:LinkButton>
             <asp:LinkButton ID="lbnLast" runat="Server" Text="尾页"   Enabled='<%# ((GridView)Container.NamingContainer).PageIndex != (((GridView)Container.NamingContainer).PageCount - 1) %>' CommandName="Page" CommandArgument="Last" ></asp:LinkButton>
             <br />
            </PagerTemplate>
        </asp:GridView>