GridView多行嵌套（整行）

使用用户控件实现，外层GridView和内层GridView个使用一个用户控件。

ucChildGridView.ascx

前台

代码

 1  <% @ Control Language = " C# "  AutoEventWireup = " true "  CodeFile = " ucParentGridView.ascx.cs "
 2      Inherits = " 多层嵌套整行嵌套_ucParentGridView "   %>
 3  < link href = " ~/CSS/Gridview.css "  rel = " stylesheet "  type = " text/css "   />
 4  < div id = " container " >
 5       < asp:GridView ID = " ParentGridView "  AllowPaging = " true "  BorderColor = " Black "  OnRowDataBound = " ParentGridView_RowDataBound "
 6          runat = " server "  AutoGenerateColumns = " False "  Font - Size = " 12px "  Width = " 530px "  AllowSorting = " True "
 7          OnRowCreated = " ParentGridView_RowCreated " >
 8           < Columns >
 9               < asp:BoundField DataField = " CategoryID "  HeaderText = " 编号 "  ReadOnly = " True "   />
10               < asp:BoundField DataField = " CategoryName "  HeaderText = " 类别 "  ReadOnly = " True "   />
11               < asp:TemplateField ShowHeader = " False " >
12                   < ItemTemplate >
13                       < asp:LinkButton ID = " LinkButton1 "  CommandArgument = ' <%# Bind("CategoryID") %> '  OnClick = " linkAssemblyDetail_OnClick "
14                          runat = " server "  Text = " Detail " ></ asp:LinkButton >
15                   </ ItemTemplate >
16               </ asp:TemplateField >
17           </ Columns >
18           < HeaderStyle BackColor = " Azure "  Font - Size = " 12px "  HorizontalAlign = " Center "   />
19           < RowStyle HorizontalAlign = " Center "   />
20           < PagerStyle HorizontalAlign = " Center "   />
21       </ asp:GridView >
22  </ div >
23 

后台

代码

  1  public   partial   class  多层嵌套整行嵌套_ucParentGridView : System.Web.UI.UserControl
  2  {
  3       private   int  ShowDetailRowKey
  4      {
  5           get
  6          {
  7               if  (ViewState[ " ShowDetailRowKey " ]  ==   null )
  8              {
  9                   return   - 1 ;
 10              }
 11               else
 12              {
 13                   return   int .Parse(ViewState[ " ShowDetailRowKey " ].ToString());
 14              }
 15          }
 16           set
 17          {
 18              ViewState[ " ShowDetailRowKey " ]  =  value;
 19          }
 20      }
 21 
 22       protected   void  Page_Load( object  sender, EventArgs e)
 23      {
 24           if  ( ! IsPostBack)
 25          {
 26              bindParent();
 27          }
 28      }
 29 
 30       ///   <summary>
 31       ///  数据绑定
 32       ///   </summary>
 33       public   void  bindParent()
 34      {
 35           string  sqlStr  =   " select * from Categories " ;
 36          DataSet myds  =  Common.dataSet(sqlStr);
 37          ParentGridView.DataSource  =  myds;
 38          ParentGridView.DataKeyNames  =   new   string [] {  " CategoryID "  };
 39          ParentGridView.DataBind();
 40      }
 41 
 42       ///   <summary>
 43       ///  在每一行绑定数据时，判断是否需要创建子表
 44       ///   </summary>
 45       ///   <param name="sender"></param>
 46       ///   <param name="e"></param>
 47       protected   void  ParentGridView_RowDataBound( object  sender, GridViewRowEventArgs e)
 48      {
 49           foreach  (TableCell tc  in  e.Row.Cells)
 50          {
 51              tc.Attributes[ " style " ]  =   " border-color:Black " ;
 52          }
 53      }
 54 
 55       protected   void  linkAssemblyDetail_OnClick( object  sender, EventArgs e)
 56      {
 57 
 58          LinkButton btn  =  (LinkButton)sender;
 59 
 60           if  (btn.CommandArgument  !=   string .Empty)
 61          {
 62               int  key  =   int .Parse(btn.CommandArgument);
 63 
 64               if  (key  ==  ShowDetailRowKey)
 65              {
 66 
 67                  ShowDetailRowKey  =   - 1 ;
 68 
 69                  bindParent();
 70 
 71              }
 72               else
 73              {
 74                  ShowDetailRowKey  =  key;
 75 
 76                  bindParent();
 77              }
 78          }
 79      }
 80 
 81       private   void  CreateDetailRow(GridViewRow gridRow)
 82      {
 83           if  (RowIsCollasped(gridRow))
 84          {
 85              GridViewRow row  =   new  GridViewRow(gridRow.RowIndex,  - 1 , DataControlRowType.DataRow, DataControlRowState.Normal);
 86 
 87               // TableCell cell = new TableCell();
 88               // row.Cells.Add(cell);
 89 
 90              TableCell cell2  =   new  TableCell();
 91              cell2.Attributes[ " colspan " ]  =  ( this .ParentGridView.Columns.Count).ToString();
 92 
 93              ucChildGridView ucChildGV  =  (ucChildGridView)LoadControl( " ucChildGridView.ascx " );
 94 
 95              ucChildGV.CategoryID  =   int .Parse( this .ParentGridView.DataKeys[gridRow.RowIndex].Value.ToString());
 96              ucChildGV.BindGridView();
 97 
 98              cell2.Controls.Add(ucChildGV);
 99              row.Cells.Add(cell2);
100 
101 
102               this .ParentGridView.Controls[ 0 ].Controls.AddAt(gridRow.RowIndex  +   2 , row);
103 
104          }
105      }
106 
107       private   bool  RowIsCollasped(GridViewRow row)
108      {
109           return   this .ShowDetailRowKey  ==   int .Parse( this .ParentGridView.DataKeys[row.RowIndex].Value.ToString())  ?   true  :  false ;
110      }
111 
112       protected   void  ParentGridView_RowCreated( object  sender, GridViewRowEventArgs e)
113      {
114           if  (e.Row.RowType  ==  DataControlRowType.Pager)
115          {
116               for  ( int  i  =   0 ; i  <   this .ParentGridView.Rows.Count; i ++ )
117              {
118                   this .CreateDetailRow( this .ParentGridView.Rows[i]);
119              }
120          }
121      }
122  }
123 

 

 

ucChildGridView.ascx 

前台

代码

 1  <% @ Control Language = " C# "  AutoEventWireup = " true "  CodeFile = " ucChildGridView.ascx.cs "
 2      Inherits = " ucChildGridView "   %>
 3  < asp:GridView ID = " ChildGridView "  runat = " server "  AllowPaging = " True "  PageSize = " 3 "  AutoGenerateColumns = " False "
 4      BorderColor = " Black "  OnRowDataBound = " ChildGridView_RowDataBound "  Width = " 241px " >
 5       < Columns >
 6           < asp:BoundField DataField = " ProductID "  HeaderText = " 编号 "  ReadOnly = " True "   />
 7           < asp:BoundField DataField = " ProductName "  HeaderText = " 名称 "  ReadOnly = " True "  SortExpression = " ProductName "   />
 8       </ Columns >
 9       < HeaderStyle BackColor = " Azure "  Font - Size = " 12px "  HorizontalAlign = " Center "   />
10       < RowStyle HorizontalAlign = " Center "   />
11       < PagerStyle HorizontalAlign = " Center "   />
12  </ asp:GridView >
13  

后台 

代码

 1  public   partial   class  ucChildGridView : System.Web.UI.UserControl
 2  {
 3       public   int  CategoryID
 4      {
 5           get
 6          {
 7               if  (ViewState[ " CategoryID " ]  ==   null )
 8              {
 9                   return   0 ;
10              }
11               else
12              {
13                   return   int .Parse(ViewState[ " CategoryID " ].ToString());
14              }
15          }
16           set
17          {
18              ViewState[ " CategoryID " ]  =  value;
19          }
20      }
21 
22       protected   void  Page_Load( object  sender, EventArgs e)
23      {
24           if  ( ! IsPostBack)
25          {
26              BindGridView();
27          }
28      }
29 
30       protected   void  ChildGridView_RowDataBound( object  sender, GridViewRowEventArgs e)
31      {
32           foreach  (TableCell tc  in  e.Row.Cells)
33          {
34              tc.Attributes[ " style " ]  =   " border-color:Black " ;
35          }
36 
37      }
38 
39       public   void  BindGridView()
40      {
41           string  sqlStr  =   " select * from Products where CategoryID= "   +   this .CategoryID.ToString();
42          DataSet myds  =  Common.dataSet(sqlStr);
43 
44           this .ChildGridView.DataSource  =  myds.Tables[ 0 ];
45           this .ChildGridView.DataBind();
46      }
47  }
48