asp.net CheckBoxList 取值与勾选,复选框后台控制前台checkbox选中

前台:
<asp:CheckBoxList ID = "cblJL" runat = "server" RepeatDirection="Horizontal" Width="100%">
    <asp:ListItem>当前记录</asp:ListItem>
    <asp:ListItem>当前页</asp:ListItem>
    <asp:ListItem>全部记录</asp:ListItem>
</asp:CheckBoxList>


后台3种方式:
第一种:获得CheckBox的值

string save_cblJL = "";
for (int i = 0; i < this.cblJL.Items.Count; i++)
{
	if (this.cblJL.Items[i].Selected == true)
	{
		save_cblJL += this.cblJL.Items[i].Value + ",";
	}
}
Response.Write(save_cblJL);


第二种:获得CheckBox的值

string str_Save_cblJL = "";
foreach (ListItem li in cblJL.Items)
{
	if (li.Selected == true)
	{
		str_Save_cblJL += li.Value + ",";
	}
}
Response.Write(str_Save_cblJL);


第三种:从后台给前台CheckBox赋值

string strapp = "当前记录,当前页,全部记录,";
string[] strtemp = strapp.Split(',');
foreach (string str in strtemp)
{
	for (int i = 0; i < cblJL.Items.Count; i++)
	{
		if (this.cblJL.Items[i].Value == str)
		{
			this.cblJL.Items[i].Selected = true;
		}
	}
}


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