为什么CheckBoxList 绑定数据后 要在读取不到Text 和Value ？

 

绑定数据：

...CheckBoxList.DataSource = dt; CheckBoxList.DataTextField = "text"; CheckBoxList.DataValueField = "id"; CheckBoxList.DataBind();

读取Value:

for (int i = 0; i < ChenkBoxList.Items.Count; i++) { if (ChenkBoxList.Items[i].Selected == true) { Label1.Text += ChenkBoxList.Items[i].Value + "|"; } }

 

注意：在绑定页面的protected void Page_Load(object sender, EventArgs e)要加上海if (!IsPostBack)  如：

protected void Page_Load(object sender, EventArgs e) { if (!IsPostBack) { ... CheckBoxlist.DataSource = dt; CheckBoxlist.DataTextField = "Text"; CheckBoxlist.DataValueField = "id"; CheckBoxlist.DataBind(); ... } }