동적 그리드에서 페이징을 추가하는 중 오류가 발생 했습니까?

Question

나는 동적 그리드를 만든하지만 무엇입니까 페이징 도구 모음을 추가하는 동안 "런타임 오류 -"정의는 null이거나 개체가 아닙니다 "입니다.

// ASCX 코드

<%@ Control Language="C#" ClassName="Defatult3UserContorl" %> 
<%@ Import Namespace="System.Collections.Generic" %> 
<%@ Import Namespace="System.Data.SqlClient" %> 
<%@ Import Namespace="System.Data" %> 
<%@ Register Assembly="Ext.Net" Namespace="Ext.Net" TagPrefix="ext" %> 

<script runat="server"> 
    private DataTable GetDataTable() 
    { 
     DataTable table = new DataTable(); 

     table.Columns.AddRange(new DataColumn[] { 
      new DataColumn("Company") { ColumnName = "Company", DataType = typeof(string) }, 
      new DataColumn("Price")  { ColumnName = "Price",  DataType = typeof(double) }, 
      new DataColumn("Change") { ColumnName = "Change",  DataType = typeof(double) }, 
      new DataColumn("PctChange") { ColumnName = "PctChange", DataType = typeof(double) }, 
      new DataColumn("PctChange") { ColumnName = "LastChange", DataType = typeof(DateTime) } 
     }); 

     foreach (object[] obj in this.Data) 
     { 
      table.Rows.Add(obj); 
     } 

     return table; 
    } 
    private object[] Data 
    { 
     get 
     { 
      DateTime now = DateTime.Now; 

      return new object[] 
      { 
       new object[] { "3m Co", 71.72, 0.02, 0.03, now }, 
       new object[] { "Alcoa Inc", 29.01, 0.42, 1.47, now }, 
       new object[] { "Altria Group Inc", 83.81, 0.28, 0.34, now }, 
       new object[] { "American Express Company", 52.55, 0.01, 0.02, now }, 
       new object[] { "American International Group, Inc.", 64.13, 0.31, 0.49, now }, 
       new object[] { "AT&T Inc.", 31.61, -0.48, -1.54, now }, 
       new object[] { "Boeing Co.", 75.43, 0.53, 0.71, now }, 
       new object[] { "Caterpillar Inc.", 67.27, 0.92, 1.39, now }, 
       new object[] { "Citigroup, Inc.", 49.37, 0.02, 0.04, now }, 
       new object[] { "E.I. du Pont de Nemours and Company", 40.48, 0.51, 1.28, now }, 
       new object[] { "Exxon Mobil Corp", 68.1, -0.43, -0.64, now }, 
       new object[] { "General Electric Company", 34.14, -0.08, -0.23, now }, 
       new object[] { "General Motors Corporation", 30.27, 1.09, 3.74, now }, 
       new object[] { "Hewlett-Packard Co.", 36.53, -0.03, -0.08, now }, 
       new object[] { "Honeywell Intl Inc", 38.77, 0.05, 0.13, now }, 
       new object[] { "Intel Corporation", 19.88, 0.31, 1.58, now }, 
       new object[] { "International Business Machines", 81.41, 0.44, 0.54, now }, 
       new object[] { "Johnson & Johnson", 64.72, 0.06, 0.09, now }, 
       new object[] { "JP Morgan & Chase & Co", 45.73, 0.07, 0.15, now }, 
       new object[] { "McDonald\"s Corporation", 36.76, 0.86, 2.40, now }, 
       new object[] { "Merck & Co., Inc.", 40.96, 0.41, 1.01, now }, 
       new object[] { "Microsoft Corporation", 25.84, 0.14, 0.54, now }, 
       new object[] { "Pfizer Inc", 27.96, 0.4, 1.45, now }, 
       new object[] { "The Coca-Cola Company", 45.07, 0.26, 0.58, now }, 
       new object[] { "The Home Depot, Inc.", 34.64, 0.35, 1.02, now }, 
       new object[] { "The Procter & Gamble Company", 61.91, 0.01, 0.02, now }, 
       new object[] { "United Technologies Corporation", 63.26, 0.55, 0.88, now }, 
       new object[] { "Verizon Communications", 35.57, 0.39, 1.11, now }, 
       new object[] { "Wal-Mart Stores, Inc.", 45.45, 0.73, 1.63, now } 
      }; 
     } 
    } 
    private GridPanel createDynamicGrid() 
    { 
     Store store1 = new Store(); 
     GridPanel grid = new GridPanel(); 
     Ext.Net.Model model = new Model(); 
     for (int i = 0; i < 2; i++) 
     { 
      ModelField modelField = new ModelField(); 
      if (i == 0) 
       modelField.Name = "Company"; 
      else 
       modelField.Name = "Price"; 

      model.Fields.Add(modelField); 

     } 

     store1.Model.Add(model); 
     store1.DataSource = this.GetDataTable(); 
     grid.Store.Add(store1); 
     grid.SelectionModel.Add(new RowSelectionModel { Mode = SelectionMode.Single }); 
     grid.ColumnModel.Columns.Add(new ColumnBase[] { 
      new Column 
      { 
       Text = "Company", 
       DataIndex = "Company", 
       Flex = 1 
      }, 
      new Column 
      { 
       Text = "Price", 
       DataIndex = "Price" 

      } 
     }); 
PagingToolbar pagging=new PagingToolbar(); 
    grid.BottomBar.Add(pagging); 

     return grid; 
    } 

    protected void btnSearch_Click(object sender, DirectEventArgs e) 
    { 
     createDynamicGrid().Render(this.frmGrid, RenderMode.AddTo); 
    } 
</script> 

<ext:FormPanel ID="frmPanel1" runat="server"> 
    <Items> 
     <ext:Button runat="server" ID="btnSearch" Text="Search" Icon="FeedMagnify" X="150" 
      Y="10"> 
      <DirectEvents> 
       <Click OnEvent="btnSearch_Click" /> 
      </DirectEvents> 
     </ext:Button> 
     <ext:FormPanel ID="frmGrid" runat="server"> 
      <Items> 
      </Items> 
     </ext:FormPanel> 
    </Items> 
</ext:FormPanel> 

// 영문 이 위의 예에서 페이지

<%@ Page Language="C#" %> 

<%@ Register Assembly="Ext.Net" Namespace="Ext.Net" TagPrefix="ext" %> 
<%@ Register TagName="Table" TagPrefix="uc" Src="~/MiscExamples/Defatult3UserContorl.ascx" %> 
<!DOCTYPE html> 
<html> 
<head id="Head1" runat="server"> 
    <title>Ext.NET Examples</title> 

    <script runat="server"> 

    </script> 

</head> 
<body> 
    <form id="form1" runat="server"> 
    <ext:ResourceManager ID="ResourceManager1" runat="server" /> 
    <ext:FormPanel ID="frmPanel1" runat="server"> 
     <Content> 
      <uc:Table runat="server" ID="SearchTable" title="Search Table" /> 
     </Content> 
    </ext:FormPanel> 
    </form> 
</body> 
</html> 

난 내가 페이지. 10 레코드 페이징을 수행 할 그리드 패널에 GridPanel 동적. 그리고를 생성하고 하나의 사용자 CONTORL을 가지고 있지만하는 동안 pagingToolbar를 추가하십시오. "PagingToolbar pagging = new PagingToolbar(); . grid.BottomBar.Add (pagging); " 나를 오류 런타임 던지고 당신이 나 좀 도와주십시오 수 있습니다 당신의 도움 Appriciated 사전에 감사

이

Answer 1

다음 설정을 추가하십시오 :

Store store1 = new Store(); 
store1.ID = "Store1"; 
store1.PageSize = 10; 

을...