Question

我在将注册网络表单中的数据插入sqlserver-2008时遇到问题。我在VS中收到错误：连接未关闭。连接的当前状态是打开的。

这是我的代码：

protected void buttonRegister(object sender, EventArgs e)
{
    SqlConnection objCon = new SqlConnection(strCon);

    try
    {
        objCon.ConnectionString = strCon;
        objCon.Open();
    }
    catch (Exception ex)
    {
        this.lblConnect.Text = "Unable to connect to database.";
    }

    if (objCon.State == System.Data.ConnectionState.Open)
    {
        Session["users"] = this.txtUsername.Text;
        Session["pwd"] = this.txtPassword.Text;
        lblConnect.Text = "Connected";

        string sql = @"INSERT INTO user (firstname, middlename, lastname, username, email, password) VALUES ('" + txtFirstname.Text
            + "' , '" + txtMiddlename.Text + "', '" + txtLastname.Text + "', '" + txtUsername.Text + "', '" + txtEmailAddr.Text
            + "', '" + txtPassword.Text + "')";

        objCon.Open();
        SqlCommand cmd = new SqlCommand(sql, objCon);
        cmd.ExecuteNonQuery();
        SqlDataReader rd = cmd.ExecuteReader();

        objCon.Close();
        objCon.Dispose();
    }
    else
    {
        lblConnect.Text = "Unable to connect to database.";
                    objCon.Close();
        objCon.Dispose();

    }
    objCon.Close();
    objCon.Dispose();

}

知道它为什么不插入SQL Server？请帮忙！非常感谢任何帮助。

Answer 1

在我看来你第二次打开objCon。您的if确保它已打开，然后在分配sql字符串后尝试再次打开它。

你有这个条件：

if (objCon.State == System.Data.ConnectionState.Open)

然后，在这种情况下你会说objCon.Open();

消除有问题的objCon.Open();

将记录插入sql server db

1 个答案: