还是密码问题

前面说过的更改密码方法,都时灵时不灵,没辙了,现在用dotnet中提供的DirectoryServices来实现.(C#风格,注意在前面using一下System.DirectoryServices)

        private void setpassButton_Click(object sender, EventArgs e)
        {
            DirectoryEntry admin = new DirectoryEntry("LDAP://zhang-yunfeng.zyf.com/" + TextBoxUser.Text.Trim());
            try
            {
                admin.Invoke("SetPassword", new object[] {passwordBox.Text.Trim() });
                admin.CommitChanges();
                admin.Close();
                MessageBox.Show("新密码为:" + passwordBox.Text.Trim());
            }
            catch (Exception ex)
            {
                MessageBox.Show("Error setting password: " + ex.ToString());
                return;
            }
            finally
            {
                admin.Dispose();
            }

        }