如何批量获得当前选中的相应的ID?

Question

<asp:Repeater ID="rep" runat="server">
    <ItemTemplate>
        <div>
        <asp:Label ID="lblID" runat="server" Text='<%# Bind("ID") %>'></asp:Label>
        <asp:CheckBox ID="cbXuan" Text="选中" runat="server" />
        </div>
    </ItemTemplate>
</asp:Repeater><asp:Button ID="btnShanChu" runat="server" Text="删除所有选中" OnClick="btnShanChu_Click" />请问当我点删除后,如何在后台btnShanChu_Click里如何获取我选中的哪些的ID了?

Answer 1

 //全选和全不选的js脚本    function SelectAllCheckboxes(theBox)
    {
　    var xState=theBox.checked;
　    elm=theBox.form.elements;
　    for(i=0; i < elm.length;i++)
　    if(elm[i].type=="checkbox" && elm[i].id!=theBox.id)
　    {
      　if(elm[i].checked!=xState)
      　elm[i].click();
　    }
    }//cs中处理选中行的例子
 protected void lkDeal_Click(object sender, EventArgs e)
    {
        string ZFX = "N";
        if (((LinkButton)sender).Text == "还原")
             ZFX = "Y";        StringBuilder S = new StringBuilder();
        foreach (GridViewRow gvr in gvMain.Rows)
        {
            //CheckBox chk = (CheckBox)gvr.Cells[0].Controls[0];
            CheckBox chk = (CheckBox)gvr.Cells[0].FindControl("chk");            if (chk.Checked)
            {
                S.AppendFormat("{0},", gvr.Cells[1].Text);
            }
        } 
        if (S.Length > 0)
        {
            string SQL = S.ToString();
            SQL = SQL.Remove(SQL.Length - 1, 1);
            SQL = string.Format("UPDATE TD_CONSUMER SET ZFX='{0}' WHERE ZID IN({1})", ZFX, SQL);
            if (MsSqlHelper.ExecuteNonQuery(SQL) > 0)
                Response.Redirect(Request.Url.ToString());
        }
    }

Answer 2

  protected void btnShanChu_Click(object sender, EventArgs e)
    {      SqlConnection  conn = new SqlConnection(str_con):
        foreach (RepeaterItem item in Repeater1.Items)
        {
            CheckBox cb = (CheckBox)item.FindControl("cbXuan");
            if (cb.Checked == true)
            {
                Label lab = (Label)item.FindControl("lblID");
                sql = "delete table where id='" + lab.Text + "' ";
                conn.Open();
                cmd = new SqlCommand(sql, conn);
                cmd.ExecuteNonQuery();
                conn.Close();
            }
        }
        Response.Redirect(Request.Url.ToString());//刷新页面,跟新页面信息
    }

Answer 3

没有注释，解释下刚才的例子的作用：
作用：对选中行的ZFX字段置为'Y' 或者'N'.
如果联结的标签是 "还原"则置为'Y' ，否则置为'N' 

Answer 4

foreach (RepeaterItem Item in rep.Items)
{ 
       Label lbl = (Label)Item.FindControl("lblID");
       CheckBox chk= (CheckBox)Item.FindControl("cbXuan");
       if(chk.Checked)
       {
            string id = lbl.Text;
            ............
        }
}