问题描述
你好，
我创建了2个国家和城市的数据表。拥有state_id state_name。我希望下拉列表由数据表（状态）中插入的数据填充。所以如何将表绑定到下拉列表。
protected void Page_Load（object sender，EventArgs e）
{
if（！IsPostBack）
{
DataTable dt = new DataTable（）;
ddlstate.DataSource = state;
ddlstate.DataTextField =state_name;
ddlstate.DataValueField =state_id;
ddlstate.DataBind（）;
}
protected void ddlstate_SelectedIndexChanged（object sender，EventArgs e）
{
string sId = ddlstate.SelectedValue.ToString（）;
string sName = ddlstate.SelectedItem.ToString（）;
}
这不起作用..
hello,
i have created 2 datatables state and city. having state_id state_name. And i want the dropdownlist to be filled by the data inserted in datatable(state). so how to bind tables to dropdown.
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
DataTable dt = new DataTable();
ddlstate.DataSource = state;
ddlstate.DataTextField = "state_name";
ddlstate.DataValueField = "state_id";
ddlstate.DataBind();
}
protected void ddlstate_SelectedIndexChanged(object sender, EventArgs e)
{
string sId = ddlstate.SelectedValue.ToString();
string sName = ddlstate.SelectedItem.ToString();
}
this is not working..
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