GridView 标头放DropDownList

建模板列。。把DropDownList拖进去么

一定要放在GridView 标头嗎？就放在GridView 上面不行嗎？

后台在rowdatabound中，也可以访问到gridview的head row，可以动态增删他的子控件

标头。。
在RowDataBound中//如果是标头
if (e.Row.RowType == DataControlRowType.Header)
{
e.Row.Cells[0].Text = "<select><option>请选择</option></select>";//在第一列放入一个下来菜单
}

做过两个gridview嵌套的东西，建议不要放在页眉或页脚上。涉及到页面回发与事件的问题

http://topic.csdn.net/t/20060420/10/4700258.html

放表格上面,然后把GridView的ShowHeader设为false就行了，道理是一样的。
至于显示不同的列？
这个可以使用DropDownList将列名作为参数传递到GridView控件使用的数据源，提取相应信息即可。

表头加入DropDownList参考：  <%@   Page   Language="C#"   AutoEventWireup="true"   CodeFile="Default.aspx.cs"   Inherits="Samples_Default"   %>

  <!DOCTYPE   html   PUBLIC   "-//W3C//DTD   XHTML   1.0   Transitional//EN"   "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

  <html   xmlns="http://www.w3.org/1999/xhtml"   >
  <head   runat="server">
          <title>无标题页</title>
          <script   language="javascript"   type="text/javascript">
          function   test(ddlst)
          {
                  var   selectedType   =   ddlst.value;
                  var   gridTable   =   document.getElementById("GridView1")
                  var   i;
                  for(i=1;i<gridTable.rows.length;i++)
                  {
                          var   curRow   =   gridTable.rows[i];
                          var   curType   =   curRow.cells[1].innerText;
                          if(curType   ==   selectedType   ||   selectedType   ==   "ALL")
                                  curRow.style.display   =   "inline";
                          else
                                  curRow.style.display   =   "none";
                  }
          }
          </script>
  </head>
  <body>
          <form   id="form1"   runat="server">
          <div>
                  <asp:GridView   ID="GridView1"   runat="server"   AutoGenerateColumns="False"   OnRowCreated="GridView1_RowCreated">
                          <Columns>
                                  <asp:BoundField   DataField="field1"   HeaderText="id"   ReadOnly="True"   SortExpression="field1"   />
                                  <asp:TemplateField>
                                          <HeaderTemplate>
                                                  <asp:DropDownList   ID="DropDownList1"   runat="server"   Width="87px"   >
                                                          <asp:ListItem   Value="ALL">ALL</asp:ListItem>
                                                          <asp:ListItem>AAA</asp:ListItem>
                                                          <asp:ListItem>BBB</asp:ListItem>
                                                          <asp:ListItem>CCC</asp:ListItem>
                                                  </asp:DropDownList>
                                          </HeaderTemplate>
                                          <ItemTemplate><%#   Eval("field2")%></ItemTemplate>

                                  </asp:TemplateField>
                                  <asp:BoundField   DataField="field3"   HeaderText="re"   ReadOnly="True"   SortExpression="field3"   />
                          </Columns>
                  </asp:GridView>

          </div>
          </form>
  </body>
  </html>
  ==============

  public   partial   class   Samples_Default   :   System.Web.UI.Page
  {
          protected   void   Page_Load(object   sender,   EventArgs   e)
          {
                  if   (!IsPostBack)
                  {
                          BindData();
                  }
          }

          private   void   BindData()//这里只是模拟一些测试数据
          {
                  DataTable   dt   =   new   DataTable();
                  dt.Columns.Add("Field1");
                  dt.Columns.Add("Field2");
                  dt.Columns.Add("Field3");
                  System.Random   rd   =   new   Random();
                  for   (int   i   =   1;   i   <   30;   i++)
                  {
                          int   tmp   =   rd.Next(99999);
                          int   rem   =   0;
                          Math.DivRem(tmp,   3,   out   rem);
                          if(rem   ==   0)   dt.Rows.Add(new   object[]   {   i,"AAA",tmp});
                          else   if   (rem   ==   1)   dt.Rows.Add(new   object[]   {   i,   "BBB",   tmp   });
                          else   if   (rem   ==   2)   dt.Rows.Add(new   object[]   {   i,   "CCC",   tmp   });
                  }
                  dt.AcceptChanges();
                  this.GridView1.DataSource   =   dt;
                  this.GridView1.DataBind();
          }
          protected   void   GridView1_RowCreated(object   sender,   GridViewRowEventArgs   e)
          {
                  if   (e.Row.RowType   ==   DataControlRowType.Header)
                  {
                          DropDownList   ddlst   =   e.Row.FindControl("DropDownList1")   as   DropDownList;
                          ddlst.Attributes.Add("onchange","test(this);");
                  }
          }
  }

  ***********************************
  如果有翻页，例如一共有100条数据，每页显示20条，耍选时希望每页也显示20条符合条件的数据，那么更简单，这样写就可以了
  <asp:TemplateField>
                                          <HeaderTemplate>
                                                  <asp:DropDownList   ID="DropDownList1"   runat="server"   Width="87px"   AutoPostBack="True"   >
                                                          <asp:ListItem   Value="ALL">ALL</asp:ListItem>
                                                          <asp:ListItem>AAA</asp:ListItem>
                                                          <asp:ListItem>BBB</asp:ListItem>
                                                          <asp:ListItem>CCC</asp:ListItem>
                                                  </asp:DropDownList>
                                          </HeaderTemplate>
                                          <ItemTemplate><%#   Eval("field2")%></ItemTemplate>                                 </asp:TemplateField>

protected   void   GridView1_RowCreated(object   sender,   GridViewRowEventArgs   e)
          {
                  if   (e.Row.RowType   ==   DataControlRowType.Header)
                  {
                          DropDownList   ddlst   =   e.Row.FindControl("DropDownList1")   as   DropDownList;
                          ddlst.Attributes.Add("onchange","test(this);");
                          ddlst.SelectedIndexChanged   +=   new   EventHandler(ddlst_SelectedIndexChanged);
                  }
          }

          void   ddlst_SelectedIndexChanged(object   sender,   EventArgs   e)
          {
                  //在这里对数据源进行筛选并且重新绑定到GridView1
          }

DropDownList放上了，不知道怎么取值

<asp:TemplateField>
                   <HeaderTemplate>
                       <asp:DropDownList ID="DropDownList1" runat="server" OnSelectedIndexChanged="DropDownList1_SelectedIndexChanged" AutoPostBack="True">
                           <asp:ListItem Value="u_update">更新日期</asp:ListItem>
                           <asp:ListItem Value="u_regtime">注册日期</asp:ListItem>
                       </asp:DropDownList>
                   </HeaderTemplate>
                   <ItemTemplate>

                   </ItemTemplate>
               </asp:TemplateField>

DropDownList1_SelectedIndexChanged里用((DropDownList)sender).SelectedValue.ToString()可以取，可不可以在外面取?

用ViewState保存DropDownList1的值，但是一变改DropDownList1的时候，重新剧新GridView，DropDownList1无法显示到原来的值

你应该多搜索一下再过来问，这样的交流成本很高。www.google.com

调试易

GridView 标头放DropDownList

解决方案 »