所以这是我的情况:我有一个DropDownList,我在触发某个事件时填充。为了填充它,我执行一个返回两列的SQL查询:ID和Name。我使用DataSource / DataTextField / DataValueField将Name绑定到DropDownList,但我也想保存ID(在第二个查询中使用)。我怎么能这样做?
我尝试将ID保存到隐藏的输入字段,因为我想使用它但不将其显示给用户。但是输入不是ListControl,所以它不起作用。如何获取DropDownList中所选名称的匹配ID?
string strConn = ConfigurationManager.ConnectionStrings["ConnectionStringName"].ConnectionString;
SqlConnection con = new SqlConnection(strConn);
SqlCommand cmd = new SqlCommand();
cmd.Connection = con;
cmd.CommandType = CommandType.Text;
cmd.CommandText = "SELECT Id, Name FROM Users WHERE Age > 10";
DataSet objDs = new DataSet();
SqlDataAdapter dAdapter = new SqlDataAdapter();
dAdapter.SelectCommand = cmd;
con.Open();
dAdapter.Fill(objDs);
con.Close();
if (objDs.Tables[0].Rows.Count > 0)
{
NameDropDown.DataSource = objDs.Tables[0];
NameDropDown.DataTextField = "Name";
NameDropDown.DataValueField = "Name";
NameDropDown.DataBind();
NameDropDown.Items.Insert(0, "--Select--");
}
else
{
NameDropDown.Items.Clear();
NameDropDown.Items.Insert(0, "No names found");
}
答案 0 :(得分:1)
考虑:
if (objDs.Tables[0].Rows.Count > 0)
{
NameDropDown.DataSource = objDs.Tables[0];
NameDropDown.DataTextField = "Name";
NameDropDown.DataValueField = "ID"; /*why wouldn't this be ID*/
NameDropDown.DataBind();
NameDropDown.Items.Insert(0, "--Select--");