Question

    <asp:GridView ID="GridPayCondition" Width="750px" runat="server" AutoGenerateColumns="False" BackColor="White" BorderColor="#3366CC" BorderStyle="None" BorderWidth="1px" CellPadding="4" AllowSorting="True" OnRowDataBound="GridPayCondition_RowDataBound" AllowPaging="True" OnPageIndexChanging="GridPayCondition_PageIndexChanging" OnSorting="GridPayCondition_Sorting" >

aspx文件的代码：

cs文件的代码：

 protected void GridPayCondition_Sorting(object sender, GridViewSortEventArgs e)
       {

           List<PayCondition> paycondition = new List<PayCondition>();
           EditPayConditionLogic epcLogic = new EditPayConditionLogic();
           paycondition = epcLogic.GetPayCondition();

           if(paycondition!=null)
           {
               var param = Expression.Parameter(typeof(PayCondition), e.SortExpression);
               var sortExpression = Expression.Lambda<Func<PayCondition, object>>(Expression.Convert(Expression.Property(param, e.SortExpression), typeof(object)), param);

               if(ViewState["SortDirection"]=="DESC")
               {
                   ViewState["SortDirection"] = "ASC";
                   GridPayCondition.DataSource = paycondition.AsQueryable<PayCondition>().OrderBy(sortExpression);

               }
               else
               {
                   ViewState["SortDirection"] = "DESC";
                   GridPayCondition.DataSource = paycondition.AsQueryable<PayCondition>().OrderByDescending(sortExpression);
               }
               GridPayCondition.DataBind();
           }

       }

Answer 1

错误：

数据源不支持服务器端数据分页

原因：

GridPayCondition.DataSource = paycondition.AsQueryable<PayCondition>().OrderBy(sortExpression);

<强>解决方案：

GridPayCondition.DataSource = paycondition.AsQueryable<PayCondition>().OrderBy(sortExpression).ToList();

<强>原因：

您无法使用IQueryable对象将数据绑定到GridView和仍然使用分页和排序。您必须将List返回给GridView 使用ToList（）方法。

Answer 2

protected void GridPayCondition_Sorting(object sender, GridViewSortEventArgs e)
   {
       List<PayCondition> paycondition = new List<PayCondition>();
       EditPayConditionLogic epcLogic = new EditPayConditionLogic();
       paycondition1 = epcLogic.GetPayCondition();
       if (paycondition1 != null)
       {
           var param = Expression.Parameter(typeof(PayCondition),e.SortExpression);
           var sortExpression = Expression.Lambda<Func<PayCondition, object>>(Expression.Convert(Expression.Property(param, e.SortExpression), typeof(object)), param);

           if ((string)ViewState["SortDirection"] == "DESC")
           {
               ViewState["SortDirection"] = "ASC";
               GridPayCondition.DataSource = paycondition1.AsQueryable<PayCondition>().OrderBy(sortExpression).ToList();
           }
           else
           {
               ViewState["SortDirection"] = "DESC";
               GridPayCondition.DataSource = paycondition1.AsQueryable<PayCondition>().OrderByDescending(sortExpression).ToList();
           }
           GridPayCondition.DataBind();
       }

我正在使用列表获取排序gridview数据＆＃34;数据源不支持服务器端数据分页＆＃34;错误。@ jordanArron

2 个答案: