C# dbcontext数据未正确分配到标签

我为标签onclick分配了一个dbcontext对象。问题是dbcontext对象没有显示在web浏览器中。相反，什么都没有。它应该显示计数器的int值。如何分配并在标签中显示它

    protected void startOverButton_Click(object sender, EventArgs e)
    {
        gameOverLabel.Visible = false;


        answerStatus.Visible = true;
        Session["AttemptCount"] = 0;
        Session["strikes"] = 0;

        int answer = randomNumber1 + randomNumber2;
       counter = (int)Session["AttemptCount"];
        int strikeCounter = (int)Session["strikes"];

        if (mathAnswerTextBox.Text == answer.ToString())
        {
            counter += 5;

            Session["AttemptCount"] = counter;

            answerStatus.Text = "Correct!";
            warningLabel.Visible = true; ;

            scoreLabel.Text = "Score: " + counter.ToString();
            randomNumber1 = random.Next(0, 50);
            randomNumber2 = random.Next(0, 50);
            num1Label.Text = Convert.ToString(randomNumber1);//add this line 
            num2Label.Text = Convert.ToString(randomNumber2); //and this line
            num1Label.Visible = true;
            num2Label.Visible = true;
            mathAnswerTextBox.Visible = true;

            submitAnswerButton.Visible = true;
        }

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您在哪里定义GridView1的数据源？除非Im缺少某些内容，否则您是无源绑定的。我更新了上面的代码以显示完整的.aspx.cs文件