public static SqlConnection cnn;
public const string C;;

private void buttonLogin_Click(object sender, EventArgs e)
        {
            string name = textBoxLoginName.Text, word = textBoxLoginPassWord.Text;

            cnn = new SqlConnection();
            cnn.ConnectionString = ConnectionString;
            cnn.Open();
            
            SqlCommand cmd = cnn.CreateCommand();
             = "SELECT UserName,PassWord FROM [User]";
            SqlDataReader dr = cmd.ExecuteReader();
            while (dr.Read())
            {
                if ((dr.GetValue(0).ToString()) == (name.ToString()))
                {
                    if (dr.GetValue(1).ToString() == (word.ToString()))
                    {
                        textBox1.Text ="OK";
                    }
                }
            }

运行到 cnn.Open(); 时出现错误
错误提示: 在建立与服务器的连接时出错。在连接到 SQL Server 2005 时，在默认的设置下 SQL Server 不允许进行远程连接可能会导致此失败。 (provider: SQL 网络接口, error: 26 - 定位指定的服务器/实例时出错)

估计是连接字符串写错了,但是不知道怎么写,请各位DX指点
计算机名是 lczf
数据库名是 lczf

[[italic] 本帖最后由 hrlandyk 于 2007-11-28 21:41 编辑 [/italic]]

奇怪了,发贴以后那个连接字符串就显示不出来了

public const string C;

[[italic] 本帖最后由 hrlandyk 于 2007-11-28 21:48 编辑 [/italic]]