GridView加入 CheckBox为什么得不到CheckBox.Checked==true?

[大漠苍狼woft]

相关代码
前台
<asp:GridView ID="GridView1" runat="server">
<Columns>
<asp:TemplateField>
<ItemTemplate>
<asp:CheckBox ID="CheckBox1" runat="server"/>
</ItemTemplate>
<asp:TemplateField>
<asp:HyperLinkField DataNavigateUrlFields="id" DataNavigateUrlFormatString="content.aspx?id={0}" DataTextField="title" HeaderText="标题">
<ItemStyle Font-Size="Smaller" HorizontalAlign="Left" Height="25px"></ItemStyle>
</asp:HyperLinkField>
</Columns>
</GridView >
<asp:CheckBox ID="CheckBox2" runat="server" Text="全选" oncheckedchanged="CheckBox2_CheckedChanged" AutoPostBack="True" />
<asp:Button ID="Button2" runat="server" Text="取消" onclick="Button2_Click" />   
<asp:Button ID="Button3" runat="server" Text="删除" onclick="Button3_Click" />

后台
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
Bind();
}
}

protected void Button1_Click(object sender, EventArgs e)
{
foreach (GridViewRow row in GridView1.Rows)
{
((CheckBox)row.Cells[0].FindControl("CheckBox1")).Checked = true;
}
}
private void Bind()
{
//相关绑定数据
}
protected void CheckBox2_CheckedChanged(object sender, EventArgs e)
{
for (int i = 0; i <= GridView1.Rows.Count - 1; i++)
{
CheckBox cbox = (CheckBox)GridView1.Rows[i].FindControl("CheckBox1");
if (CheckBox2.Checked == true)
{
cbox.Checked = true;
}
else
{
cbox.Checked = false;
}
}
}

protected void Button2_Click(object sender, EventArgs e)
{
CheckBox2.Checked = false;
for (int i = 0; i <= GridView1.Rows.Count - 1; i++)
{
CheckBox cbox = (CheckBox)GridView1.Rows[i].FindControl("CheckBox1");
cbox.Checked = false;
}
}

protected void Button3_Click(object sender, EventArgs e)
{
for (int i = 0; i <= this.GridView1.Rows.Count - 1; i++)
{

CheckBox cbox = (CheckBox)(GridView1.Rows[i].Cells[1].FindControl("CheckBox1"));
if (cbox.Checked == true)
{

SqlCommand comm = new SqlCommand("delete from book where id='" + GridView1.DataKeys[i].Value + "'", sqlconn);
sqlconn.Open();
comm.ExecuteNonQuery();
sqlconn.Close();
}
}
Bind();
}

[q107770540]

((CheckBox)row.Cells[0].FindControl("CheckBox1")).Checked = true;
＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝
((CheckBox)row.FindControl("CheckBox1")).Checked = true;

CheckBox cbox = (CheckBox)(GridView1.Rows[i].Cells[1].FindControl("CheckBox1"));
===========
CheckBox cbox = (CheckBox)(GridView1.Rows[i].FindControl("CheckBox1"));

[冰川711]

protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)
    {
bool commend = (((CheckBox)(GridView1.Rows[e.RowIndex].Cells[2].FindControl("CheckBox1"))).Checked == true ? true: false);
    }

[wuyq11]

foreach (GridViewRow row in GridView1.Rows)
{
((CheckBox)row.FindControl("CheckBox1")).Checked = true;
}
通过JS全选

[wuyq11]

http://topic.csdn.net/u/20100722/09/65740b5f-05b6-41f8-8a07-f0b93874e6b0.html

[hbh850121]

改成
if (cbox.Checked)

这样的啦，我之前也遇到这样的问题，只是不知道是什么原因导致的

[ynrsboy]

以上的方法我试过都不行
楼主，解决了吗？我被困扰了一下午了，帮帮忙啊

[Issac25Name]

[Quote=引用 2 楼 jinkuang45 的回复:]
C# code
protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)
{
bool commend = (((CheckBox)(GridView1.Rows[e.RowIndex].Cells[2].FindControl("CheckBox1"))).Checked == tr……
[/Quote]

就是这样搞定啊1

[大明湖畔_帅锅]

        for (int i = 0; i < GridView1.Rows.Count; i++)
        {
            CheckBox cb = (CheckBox)GridView1.Rows[i].FindControl("CheckBox1");
            if (cb.Checked)
            {
                // ......
            }
        }

[智者知已应修善业]

http://blog.csdn.net/xianfajushi/archive/2008/11/30/3413317.aspx

[Robinfu2013]

首先 Checked 就是获取或者设置一个 boolean值吧？

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