Question

这是我第一次设计网站。我在连接数据库时遇到问题。没有按钮在页面上工作。最重要的是注册按钮。我正确地填写表格，但是当我按下注册按钮时，它不会将新用户注册到数据库中。它甚至没有显示我考虑过的任何错误消息。例如，它没有显示您之前已注册或您的注册未成功。我的数据库中没有错误消息和新记录。我删除了验证码，因为我认为这可能会导致问题。这是我的代码：

using System;
using System.Data.SqlClient;
using System.Web.UI.WebControls;

public partial class SignUp : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        string strname = Cache["TF"] as string;
        if (strname != null)
        {
            (Master.FindControl("Lozv") as Label).Text = strname;
            (Master.FindControl("LinkButton1") as LinkButton).Visible = true;
        }
        else
        {
            (Master.FindControl("Lozv") as Label).Text = "Guest";
            (Master.FindControl("LinkButton1") as LinkButton).Visible = false;
        }

    }

    protected void Button1_Click1(object sender, EventArgs e)
    {
        string username = txtboxUser.Text;
        SqlConnection sqlc = new SqlConnection("Data Source=.; Database=LDatabase; Integrated Security=True");
        SqlCommand cmd = new SqlCommand("SELECT dbo.CheckUserName(@UN)");
        cmd.Parameters.AddWithValue("@UN", txtboxUser.Text);
        sqlc.Open();
        Boolean User = Convert.ToBoolean(cmd.ExecuteScalar());
        sqlc.Close();

        if (User == false) ////////////// if user name is not in DB//////////////
        {
            SqlConnection sqlca = new SqlConnection();
            sqlca.ConnectionString = "data source=. ; database=LDatabase ; integrated security=true";
            SqlCommand cmda = new SqlCommand();
            cmda.Connection = sqlca;
            cmda.CommandText = "INSERT INTO User_Pass values(@UserName,@Pass,@Name,@LastName,@Email,@Date,@Sex,'0')";
            cmda.Parameters.AddWithValue("@UserName", txtboxUser.Text);
            cmda.Parameters.AddWithValue("@Pass", txtboxPass.Text);
            cmda.Parameters.AddWithValue("@Name", txtboxName.Text);
            cmda.Parameters.AddWithValue("@LastName", txtboxSurname.Text);
            cmda.Parameters.AddWithValue("@Email", txtboxEmail.Text);
            cmda.Parameters.AddWithValue("@Date", DateTime.Now);
            cmda.Parameters.AddWithValue("@Sex", rbtnGender.SelectedValue.ToString());
            cmd.Parameters.AddWithValue("@manager", "No");

            sqlca.Open();
            int n= cmda.ExecuteNonQuery();
            if (n <= 0)
                LMsg.Text = "Your registration wasn't successful";
            else
            {
                txtboxName.Text = "";
                txtboxSurname.Text = "";
                txtboxUser.Text = "";
                txtboxPass.Text = "";
                txtboxRePass.Text = "";
                txtboxEmail.Text = "";
                rbtnGender.SelectedIndex = -1;
                LMsg.Text = "You registered successfully.";
            }
            sqlca.Close();
        }

        else  //////////////if user name is in db//////////////
        {
            LMsg.Text = "This username has already registered.";
        }
    }
}

Captcha是否与此类问题有关？任何帮助将不胜感激。

Answer 1

将这样的按钮放在aspx-markup中：

<asp:Button ID="btnRegister" runat="server" Click="Button1_Click1" Height="26px" Text="register" Width="88px"/>

它应该触发该方法。

编辑：或者在Page_Load方法中绑定事件（首先从按钮中删除Click-attribute - 从上面的例子开始）。

protected void Page_Load(object sender, EventArgs e)
{
    btnRegister.Click += new EventHandler(Button1_Click1);
    string strname = Cache["TF"] as string;
    [...]

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