C# 根据当前登录用户不工作在gridview上显示数据

您如何实际显示根据当前登录用户从数据库检索的数据？我用过这个方法，但实际上不起作用。我哪里出错了

My.cs代码：

 int selectedRow = GridView1.SelectedIndex;
    GridViewRow row = GridView1.Rows[selectedRow];
    int UserId = Convert.ToInt32(row.Cells[0].Text);

    MembershipUser currentUser = Membership.GetUser();
    Guid currentUserId = (Guid)currentUser.ProviderUserKey;

    string strConnectionString = ConfigurationManager.ConnectionStrings["ASPNETDBConnectionString1"].ConnectionString;

    SqlConnection myConnect = new SqlConnection(strConnectionString);

    string strCommandText = "SELECT date, starttime, endtime, planner FROM bookings WHERE UserId =@UserId";
    SqlCommand cmd = new SqlCommand(strCommandText, myConnect);

    myConnect.Open();
    SqlDataReader reader = cmd.ExecuteReader();
    cmd.Parameters.AddWithValue("@UserId", UserId);

    reader.Close();
    myConnect.Close();

---

您必须反转线条：

       myConnect.Open();
  cmd.Parameters.AddWithValue("@UserId", UserId);
    SqlDataReader reader = cmd.ExecuteReader();

---

；-）

为了澄清，在添加UserId参数之前，您正在执行DataReader。事实上，在完全定义命令对象之前，最好不要打开连接

它应该更像这样：

string strConnectionString = ConfigurationManager.ConnectionStrings["ASPNETDBConnectionString1"].ConnectionString;

    SqlConnection myConnect = new SqlConnection(strConnectionString);

    string strCommandText = "SELECT date, starttime, endtime, planner FROM bookings WHERE UserId =@UserId";
    SqlCommand cmd = new SqlCommand(strCommandText, myConnect);
  cmd.Parameters.AddWithValue("@UserId", UserId);

    myConnect.Open();
    SqlDataReader reader = cmd.ExecuteReader();  
    myGridView.DataSource = reader;
    myGridView.DataBind();

    reader.Close();
    myConnect.Close();

---

什么不起作用？你有例外吗？错误的结果？还有别的吗？没有错。当我以前在第一个.aspx页面中预订了约会，然后进入查看约会页面时，我应该能够看到我以前预订的所有约会以及我最近预订的约会。