gridview 学习

一个对象A里 包含另一个对象B时 要在gridview里帮定 对象B的一个属性

class A{
   private string id;
   private string name;
   private B b;
}

class B {
    private string id;
    private string name;
}

<asp:GridView ID="GridView1" runat="server" 
    onselectedindexchanged="GridView1_SelectedIndexChanged">
        <Columns>
            <asp:BoundField DataField="id" HeaderText="ID" />
            <asp:BoundField DataField="name" HeaderText="name" />
            <asp:TemplateField>
                <ItemTemplate>
                    <asp:Label ID="Label1" runat="server" Text='<%# Eval("b.Name")%> '></asp:Label> 
                </ItemTemplate> 
            </asp:TemplateField>
        </Columns>
    </asp:GridView>

gridview  第一列是 checkbox， 有全选按钮。
checkbox列是模版列

<asp:GridView ID="GridViewUser" runat="server" AllowPaging="True" 
          AutoGenerateColumns="False" Caption="用户信息列表" CaptionAlign="Top">
          <Columns>
              <asp:TemplateField>
                <HeaderTemplate>
                    <asp:CheckBox ID="CheckBoxSelectAll" runat="server"  AutoPostBack="True"  OnCheckedChanged="CheckBoxSelectAll_CheckedChanged" />全选
                </HeaderTemplate>
                <ItemTemplate>
                    <asp:CheckBox ID="CheckBoxSelect" runat="server" Text='<%# Eval("id")%> ' />
                </ItemTemplate>
              </asp:TemplateField>
              <asp:BoundField DataField="id" HeaderText="ID" />
              <asp:BoundField DataField="name" HeaderText="姓名" />
              <asp:BoundField DataField="email" HeaderText="Email" />
              <asp:BoundField DataField="phone" HeaderText="电话" />
          </Columns>
      </asp:GridView>
      <div style=" text-align:center">
          <asp:Button ID="deleteUser" runat="server" Text="删除" 
              onclick="deleteUser_Click" />
      </div>

/// <summary>
    /// 删除选择的用户
    /// </summary>
    /// <param name="sender"></param>
    /// <param name="e"></param>
    protected void deleteUser_Click(object sender, EventArgs e)
    {
        foreach (GridViewRow row in GridViewUser.Rows)
        {
            CheckBox chk = (CheckBox)row.FindControl("CheckBoxSelect");
            if (chk.Checked) {
                UserDao userDao = new UserDao();
                userDao.deleteUser(int.Parse(chk.Text));
            }
        }

        getAllUser();
    }

    /// <summary>
    /// 设置全选按钮
    /// </summary>
    /// <param name="sender"></param>
    /// <param name="e"></param>
    protected void CheckBoxSelectAll_CheckedChanged(object sender, EventArgs e)
    {
        CheckBox a = (CheckBox)sender;
        if (a.Checked)
        {
            foreach (GridViewRow row in GridViewUser.Rows)
            {
                CheckBox chk = (CheckBox)row.FindControl("CheckBoxSelect");
                chk.Checked = true;
            }
        }
        else
        {
            foreach (GridViewRow row in GridViewUser.Rows)
            {
                CheckBox chk = (CheckBox)row.FindControl("CheckBoxSelect");
                chk.Checked = false;
            }
        }
    }