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我有一個下拉列表,顯示從我的數據庫獲取asp.net中選定值
public void ShowCountries()
{
OdbcConnection conn;
conn = new OdbcConnection(ConfigurationManager.ConnectionStrings["jConnString"].ConnectionString);
conn.Open();
string sql = "SELECT iso,printable_name FROM country";
OdbcCommand cmd = new OdbcCommand(sql, conn);
try
{
//ddlCountry.DataSourceID = "country";
ddlCountry.DataSource = cmd.ExecuteReader();
ddlCountry.DataTextField = "printable_name";
ddlCountry.DataValueField = "iso";
ddlCountry.DataBind();
}
catch (Exception ex)
{
Check.Text = "3" + ex.Message;
}
finally
{
ddlCountry.Dispose();
conn.Close();
conn.Dispose();
}
}
在aspx文件的國家名單,這是我如何把這個databounded列表
<asp:DropDownList ID="ddlCountry" runat="server"
DataTextField="printable_name"
DataValueField="iso">
</asp:DropDownList>
方式
它顯示列表,但如果我想選擇一個選項,然後第一個它總是插入的第一個選項的價值en從來沒有選擇一個,我做錯了什麼?
你如何在代碼中選擇一個選項? – 2010-11-21 13:49:59