关于GridView外的按钮事件如何取列的值的问题。

Question

如下代码，一个删除按扭事件通过被选择的行的ID删除所选中的行，((CheckBox)dr.FindControl("xuanze")).Checked 能取到'xuanze'列的值，为何用注掉的string ID 。。 ，不能取到列‘Label1’的值，未注销的string ID = GridView1.DataKeys[1].Values[0].ToString();有个不能全部删除的问题，索引越界了。
protected void ImageButton1_Click(object sender, ImageClickEventArgs e)
    {
        Users user = new Users(); //创建Users对象      
        foreach (GridViewRow dr in GridView1.Rows)//对GridView中每行进行判断
        {
            if (((CheckBox)dr.FindControl("xuanze")).Checked)//如果该行复选按钮选择则删除
            {
                string ID = GridView1.DataKeys[1].Values[0].ToString();
               // string ID = ((Label)dr.FindControl("Label1")).Text;//取出主键
                   user.UserID = ID;
                user.DeleteByProc(ID);//调用Users类DeleteByProc方法删除用户
            }
            InitData();
        }
    }
gridview 如下：<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" DataKeyNames="UserID" BackColor="White" BorderColor="#999999" BorderStyle="None" BorderWidth="1px" CellPadding="3" GridLines="Vertical" Width="100%" OnRowCancelingEdit="GridView1_RowCancelingEdit" OnRowDeleting="GridView1_RowDeleting" OnRowEditing="GridView1_RowEditing" OnRowUpdating="GridView1_RowUpdating">
                    <Columns>
                        <asp:TemplateField HeaderText="选择">
                                <ItemTemplate>
                                    <ASP:CHECKBOX ID="xuanze" runat="server"></ASP:CHECKBOX>
                                </ItemTemplate>
                            </asp:TemplateField>
                        <asp:TemplateField HeaderText="用户编号">
                                <ItemTemplate>
                                    <asp:Label ID="Label1" runat="server"><%# Eval("UserID") %></asp:Label>
                                </ItemTemplate>
                            </asp:TemplateField>
                            <asp:TemplateField HeaderText="用户姓名">
                                <EditItemTemplate>
                                    <asp:TextBox ID="txtName" runat="server" Text='<%# Eval("UserName") %>' Width="60"></asp:TextBox>
                                </EditItemTemplate>
                                <ItemTemplate>
                                    <asp:Label ID="Label2" runat="server"><%# Eval("UserName") %></asp:Label>
                                </ItemTemplate>
                            </asp:TemplateField>
                            <asp:TemplateField HeaderText="权限">
                                <EditItemTemplate>
                                    <asp:TextBox ID="txtPower" runat="server" Text='<%# Eval("UserPower") %>' Width="60"></asp:TextBox>
                                </EditItemTemplate>
                                <ItemTemplate>
                                    <asp:Label ID="Label3" runat="server"><%# Eval("UserPower") %></asp:Label>
                                </ItemTemplate>
                            </asp:TemplateField>                        
                        <asp:CommandField HeaderText="编辑" ShowEditButton="True" />
                        <asp:CommandField ShowDeleteButton="True" HeaderText="删除" />
                    </Columns>

Answer 1

 string ID = ((Label)dr.Cells[列号].FindControl("Label1")).Text;//取出主键 
试试

Answer 2

// string ID = ((Label)dr.FindControl("Label1")).Text;//取出主键 带//的，

Answer 3

这好象不可能!!gridView显示了这ID吗??

Answer 4

那改成这个试试
 <asp:Label ID="Label1" runat="server" text='<%# Eval("UserID") %>'></asp:Label> 

Answer 5

你可以换种写法:
        for (int i = 0; i < GridView1.Rows.Count; i++)
        {
            string ID = ((Label)GridView1.Rows[i].FindControl("Label1")).Text;
            Response.Write(ID);
        }
但你要看清GridView不是在编辑状态下!!

Answer 6

楼上有点小错,应该是:
string ID = ((Label)GridView1.Rows[i].Cells[列].FindControl("Label1")).Text; 

Answer 7

string ID = GridView1.DataKeys[1].Values[0].ToString(); 
楼主是问这样为什么取不到ID是吗？
你用GridView1.DataKeys["ID"].Values[0].ToString();这样试试

Answer 8

原来如此，是这个问题，我用 string ID = ((Label)dr.FindControl("Label1")).Text;// 取出Label1的text，text没有赋值就是空了，这样看这很明白，谢谢。