在日期上加上相应天数，并在GridView上显示

后台处理代码：

  /// <summary>
        /// 在日期上加上相应天数
        /// </summary>
        /// <param name="date"></param>
        /// <returns></returns>
        public string GetDateTime(string date)
        {
            string time = "";
            DateTime dt = Convert.ToDateTime(date).AddDays(1);
            time = dt.ToString("yyyy-MM-dd");
            return time;
        }

前台页面内容：

<asp:GridView ID="GridView1" runat="server" Width="98%" AutoGenerateColumns="False">
                                            <Columns>
                                                <asp:TemplateField HeaderText="受理号">
                                                    <ItemTemplate>
                                                        <a href='ZFDBSRY_SJSHPage.aspx?ID=<%# DataBinder.Eval(Container.DataItem, "ID") %>'>
                                                            <%# DataBinder.Eval(Container.DataItem, "JBQKSLH") %></a>
                                                    </ItemTemplate>
                                                    <ItemStyle HorizontalAlign="Center" />
                                                </asp:TemplateField>
                                                  <asp:TemplateField HeaderText="状态">
                                                    <ItemTemplate>
                                                        <a href='ZFDBSRY_SJSHPage.aspx?ID=<%# DataBinder.Eval(Container.DataItem, "ID") %>'>
                                                            <%# DataBinder.Eval(Container.DataItem, "State") %></a>
                                                    </ItemTemplate>
                                                    <ItemStyle HorizontalAlign="Center" />
                                                </asp:TemplateField>
                                                 <asp:TemplateField HeaderText="任务接收日期">
                                                    <ItemTemplate>
                                                        <a href='BSRY_JSAJPage.aspx?ID=<%# DataBinder.Eval(Container.DataItem, "ID") %>'>
                                                            <%# DataBinder.Eval(Container.DataItem, "CreateDate", "{0:yyyy-MM-dd}")%>
                                                        </a>
                                                    </ItemTemplate>
                                                    <ItemStyle HorizontalAlign="Center" />
                                                </asp:TemplateField>
                                                <asp:TemplateField HeaderText="该任务完成截止日期">
                                                    <ItemTemplate>
                                                        <a href='BSRY_JSAJPage.aspx?ID=<%# DataBinder.Eval(Container.DataItem, "ID") %>'>
                                                            <%# GetDateTime(DataBinder.Eval(Container.DataItem, "CreateDate", "{0:yyyy-MM-dd}"))%>
                                                        </a>
                                                    </ItemTemplate>
                                                    <ItemStyle HorizontalAlign="Center" />
                                                </asp:TemplateField>
                                                <asp:TemplateField HeaderText="总天数">
                                                    <ItemTemplate>
                                                        60
                                                    </ItemTemplate>
                                                    <ItemStyle HorizontalAlign="Center" />
                                                </asp:TemplateField>
                                            </Columns>
                                        </asp:GridView>