我的連接字符串放置在web.config中,如下所示。ConnectionString屬性尚未初始化
<connectionStrings>
<add name="empcon" connectionString="Persist Security Info=False;User ID=sa;Password=abc;Initial Catalog=db5pmto8pm;Data Source=SOWMYA-3BBF60D0\SOWMYA" />
</connectionStrings>
和程序的代碼...
public partial class empoperations : System.Web.UI.Page
{
string constr = null;
protected void Page_Load(object sender, EventArgs e)
{
ConfigurationManager.ConnectionStrings["empcon"].ToString();
if (!this.IsPostBack)
{
fillemps();
}
}
public void fillemps()
{
dlstemps.Items.Clear();
SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings["empcon"].ConnectionString);
con.ConnectionString = constr;
SqlCommand cmd = new SqlCommand();
cmd.CommandText = "select * from emp";
cmd.Connection = con;
SqlDataReader reader;
try
{
con.Open();
reader = cmd.ExecuteReader();
while (reader.Read())
{
ListItem lt = new ListItem();
lt.Text = reader["ename"].ToString();
lt.Value = reader["empno"].ToString();
dlstemps.Items.Add(lt);
}
reader.Close();
}
catch (Exception er)
{
lblerror.Text = er.Message;
}
finally
{
con.Close();
}
我完全新的編程....
我能夠在標籤er.message運行此應用程序控制爲「連接字符串屬性尚未初始化」
我需要從數據庫的emp表中檢索僱員的姓名列表到下拉列表中並將其顯示給用戶...
任何一個可以請修復它...
或者他可以刪除con.Connection = constr;行,這是從連接對象中刪除連接字符串。 – 2010-08-26 14:23:04
hafalir 非常感謝...其固定的... – sowmya 2010-08-26 14:51:19
@sowmya偉大 - 那麼你應該打勾最有幫助的答案接受它:http://stackoverflow.com/faq#howtoask謝謝! – Rup 2010-08-26 18:43:08