GridView 用 checkbox 全选并取值

方法一，用 js 实现

<script type="text/javascript">
  //<![CDATA[
  function CheckAll(oCheckbox)
  {
   var GridView1 = document.getElementById("<%=GridView1.ClientID %>");
   for(i = ;i < GridView1.rows.length-; i++)
   {

    GridView1.rows[i].cells[].getElementsByTagName("INPUT")[].checked = oCheckbox.checked;
   }
  }

  //]]>
  </script>

 <asp:GridView ID="GridView1" runat="server" Font-Size="12px" BackColor="#FFFFFF"
            GridLines="Both" CellPadding="" DataKeyNames="id" AutoGenerateColumns="false"  OnRowCancelingEdit="GridView1_RowCancelingEdit" OnRowDataBound="GridView1_RowDataBound" OnRowDeleting="GridView1_RowDeleting" OnRowEditing="GridView1_RowEditing" OnRowUpdating="GridView1_RowUpdating" AllowPaging="True" OnPageIndexChanging="GridView1_PageIndexChanging1">
            <HeaderStyle BackColor="#EDEDED" Height="26px" />
            <Columns>
              <asp:TemplateField>
                <HeaderTemplate>
                  <input id="Checkbox2" type="checkbox" onclick="CheckAll(this)" runat="server" /><label>全选</label>
                </HeaderTemplate>
                <ItemTemplate>
                  <asp:CheckBox ID="ItemCheckBox" runat="server" />
                </ItemTemplate>
              </asp:TemplateField>
              <asp:TemplateField HeaderText="序号">
<ItemTemplate>
<%#Container.DataItemIndex + %>
</ItemTemplate>
</asp:TemplateField>
                <asp:BoundField DataField="id" HeaderText="编号" ReadOnly="True" />
                <asp:BoundField DataField="name" HeaderText="姓名" ReadOnly="True" />
                <asp:TemplateField HeaderText="身份证号">

                        <ItemTemplate>
                            <%#Eval("card") %>
                        </ItemTemplate>

                        <EditItemTemplate>
                            <asp:TextBox ID="TBCard" Text='<%#Eval("card") %>' runat="server"></asp:TextBox>
                            <asp:RequiredFieldValidator ID="RequiredFieldValidator1" Display="Dynamic" ControlToValidate="TBCard" runat="server" ErrorMessage="请填写身份证号"></asp:RequiredFieldValidator>

                        </EditItemTemplate>

                    </asp:TemplateField>

                    <asp:TemplateField HeaderText="学历">

                        <ItemTemplate>
                            <%#Eval("xueliText")%>
                        </ItemTemplate>

                        <EditItemTemplate>
                        <asp:HiddenField ID="HDFXueli" runat="server" Value='<%#Eval("xueli") %>' />
                            <asp:DropDownList ID="DDLXueli" runat="server">
                            </asp:DropDownList>
                        </EditItemTemplate>

                    </asp:TemplateField>

                    <asp:TemplateField HeaderText="价格">

                        <ItemTemplate>
                            <%#Eval("price")%>
                        </ItemTemplate>

                        <EditItemTemplate>
                             <asp:TextBox ID="TBPrice" Text='<%#Eval("price") %>' runat="server"></asp:TextBox>
                        </EditItemTemplate>

                    </asp:TemplateField>
          <asp:BoundField HeaderText="建立时间" DataField="createdate" ReadOnly="True" />
               <asp:CommandField   ShowEditButton="True" HeaderText="修改" />
               <asp:TemplateField HeaderText="删除">
                <ItemTemplate>
                    <asp:LinkButton ID="LinkButton1" runat="server" CausesValidation="False" CommandName="Delete"
                        Text="删除" OnClientClick="return confirm('您确认删除该记录吗?');"></asp:LinkButton>
                </ItemTemplate>
              </asp:TemplateField>
            </Columns>
 </asp:GridView>  

在 .CS 中取值：

protected void Button1_Click(object sender, EventArgs e)
 {
        this.Label1.Text = "";

        foreach (GridViewRow gvr in GridView1.Rows)
        {
            CheckBox ch = (CheckBox)gvr.FindControl("ItemCheckBox");
            if (ch.Checked)
            {
                this.Label1.Text += "<li>GridView1 您选择的是（键值）：" + GridView1.DataKeys[gvr.RowIndex].Value.ToString();

            }
        }

    }

方法二：

<asp:GridView ID="GridView1" runat="server" AllowPaging="True" OnPageIndexChanging="GridView1_PageIndexChanging" OnRowCancelingEdit="GridView1_RowCancelingEdit" OnRowDataBound="GridView1_RowDataBound" OnRowDeleting="GridView1_RowDeleting" OnRowEditing="GridView1_RowEditing" OnRowUpdating="GridView1_RowUpdating" AutoGenerateColumns="False" DataKeyNames="id,name" DataMember="card,price">
<Columns>
<asp:TemplateField>
<HeaderTemplate>
<asp:CheckBox ID="CheckBox1" runat="server" Text="全选" AutoPostBack="true" OnCheckedChanged="CheckAll" />
</HeaderTemplate>
<ItemTemplate>
<asp:CheckBox ID="ItemCheckBox" runat="server" />
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="序号">
<ItemTemplate>
<%#Container.DataItemIndex + %>
</ItemTemplate>
</asp:TemplateField>
<asp:BoundField DataField="id" HeaderText="编号" ReadOnly="True" />
<asp:BoundField DataField="name" HeaderText="姓名" ReadOnly="True" />

<asp:TemplateField HeaderText="身份证号">

<ItemTemplate>
<%#Eval("card") %>
</ItemTemplate>

<EditItemTemplate>
<asp:TextBox ID="TBCard" Text='<%#Eval("card") %>' runat="server"></asp:TextBox>
<asp:RequiredFieldValidator ID="RequiredFieldValidator1" Display="Dynamic" ControlToValidate="TBCard" runat="server" ErrorMessage="请填写身份证号"></asp:RequiredFieldValidator>

</EditItemTemplate>

</asp:TemplateField>

<asp:TemplateField HeaderText="学历">

<ItemTemplate>
<%#Eval("xueliText")%>
</ItemTemplate>

<EditItemTemplate>
<asp:HiddenField ID="HDFXueli" runat="server" Value='<%#Eval("xueli") %>' />
<asp:DropDownList ID="DDLXueli" runat="server">
</asp:DropDownList>
</EditItemTemplate>

</asp:TemplateField>

<asp:TemplateField HeaderText="价格">

<ItemTemplate>
<%#Eval("price")%>
</ItemTemplate>

<EditItemTemplate>
<asp:TextBox ID="TBPrice" Text='<%#Eval("price") %>' runat="server"></asp:TextBox>
</EditItemTemplate>

</asp:TemplateField>

<asp:BoundField HeaderText="建立时间" DataField="createdate" ReadOnly="True" />
<asp:CommandField ShowEditButton="True" HeaderText="修改" />
<asp:TemplateField HeaderText="删除">
<ItemTemplate>
<asp:LinkButton ID="LinkButton1" runat="server" CausesValidation="False" CommandName="Delete"
Text="删除" OnClientClick="return confirm('您确认删除该记录吗?');"></asp:LinkButton>
</ItemTemplate>
</asp:TemplateField>
</Columns> </asp:GridView>

在 cs中：

protected void CheckAll(object sender, EventArgs e)
 {
        CheckBox cbx = (CheckBox)sender;
        foreach (GridViewRow gvr in GridView1.Rows)
        {
            CheckBox ch = (CheckBox)gvr.FindControl("ItemCheckBox");
            ch.Checked = cbx.Checked;
        }
    }
    protected void Button1_Click(object sender, EventArgs e)
    {
        this.Label1.Text = "";
        foreach (GridViewRow gvr in GridView1.Rows)
        {
            CheckBox ch = (CheckBox)gvr.FindControl("ItemCheckBox");
            if (ch.Checked)
            {
                this.Label1.Text += "<li>GridView1 您选择的是（键值）：" + GridView1.DataKeys[gvr.RowIndex].Value.ToString();
            }
        }

    }