GridView CheckBoxes-在隐藏代码的调试过程中未选中的所有字段 [英] GridView CheckBoxes- All fields showing unchecked during debugging in code-behind

问题描述

我的GridView包含2列(UserId和一个CheckBox字段).

用户通过选中复选框来选择几行.
调试时，它显示为false(即未检查)，因此它未执行"if(cb.Checked)"中的代码.

我找不到错误的出处.
//================================================ ==========

My GridView contains 2 column (UserId and a CheckBox field).

The user is selecting a few rows by checking in the checkBox.
While debugging, it shows false (ie.unchecked) and therefore it is not executing the code within "if (cb.Checked)".

I am not able to find where I did the mistake.
//==========================================================

<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns ="false">
        <Columns >
        <asp:TemplateField >
        <ItemTemplate >
        <asp:Label ID="Label1" runat="server" Text='<%#Eval("UserId")%>'></asp:Label>
        </ItemTemplate>
        </asp:TemplateField>

        <asp:TemplateField >
        <ItemTemplate >
            <asp:CheckBox ID="CheckBox1" runat="server" />
        </ItemTemplate>
        </asp:TemplateField>
        </Columns>
        </asp:GridView>

        <br /><br />
        <asp:Button ID="Button1" runat="server" Text="Button" onclick="Button1_Click" />

//================================================ ==========

//==========================================================

protected void Button1_Click(object sender, EventArgs e)
    {
        foreach (GridViewRow gr in GridView1.Rows)
        {
            CheckBox cb = (CheckBox)gr.FindControl("CheckBox1");
            if (cb.Checked)
            {
                string aa = "wkwk";
            }
        }
    }

推荐答案

我可以找到错误.
代码就是这样.

I could find the error.
The code was like this.

protected void Page_Load(object sender, EventArgs e)
    {
       //Databinding to GridView

    }

//================================================ ===================
更正后的代码如下
//================================================ ==================

//===================================================================
The corrected code is as follows
//===================================================================

protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
           //Databinding to Gridview
        }

    }

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