gridview表态添加checkbox 和实现全选和删除

首先是把checkbox添加到表头，需要用到gridview的模板列

　　　　　　<asp:TemplateField HeaderText ="全选" ItemStyle-HorizontalAlign="Center">
                    <HeaderTemplate>
                        <asp:CheckBox ID="ckhead" runat="server" Text="全选" AutoPostBack="True"
                            oncheckedchanged="ckhead_CheckedChanged"/>
                    </HeaderTemplate>
                    <ItemTemplate>
                        <input id="ck" type="checkbox" name="chkGet" runat="server"  value='<%#Eval("UserID") %>' />
                    </ItemTemplate>

第一个checkbox是显示在gridview的头上的，第二个checkbox是显示在girdview的每一行的，需要注意的是，第一个checkbox是服务器控件，要把回发设置为真

AutoPostBack="True" ，在oncheckedchanged事件里写全选事件，

 protected void ckhead_CheckedChanged(object sender, EventArgs e)
        {
            CheckBox cb=(CheckBox)this.GridView1.HeaderRow.FindControl("ckhead");
            for (int i = 0; i < GridView1.Rows.Count; i++)
            {
                HtmlInputCheckBox chk = (HtmlInputCheckBox)GridView1.Rows[i].FindControl("ck");
                chk.Checked = cb.Checked;
            }
        }

这只是让控件选中而已，还有一步就是操作选中的项，

想操作选中项，必须先获取

protected void btn_lock_Click(object sender, EventArgs e)
        {
            bool status = false;
            for (int i = 0; i < GridView1.Rows.Count; i++)
            {
                HtmlInputCheckBox chk = (HtmlInputCheckBox)GridView1.Rows[i].FindControl("ck"); //获取选中的项
                if (chk.Checked == true) //判断状态
                {
                    long uid = Convert.ToInt32(chk.Value);
                    if (BLLFuntions.UpdateModel(new tb_user { UserID = uid }, new tb_user { IsLockStock = 1 }))
                    { status = true; }
                    else
                    {
                        status = false;
                        break;
                    }
                }
            }
            if (status)
            {
                MessageBox.Show(this, "操作已成功");
                Bind();
            }
            else
            {
                MessageBox.Show(this, "操作已失败");
                Bind();
            }

        }

大概就这样了……希望对读者有所帮助……