[C#]LoginForm e MainForm

[RaouL_BennetH]

Salve a tutti

Allora, ho questa situazione:

1 form di login
1 main form

Vorrei che dopo aver effettuato il login sull'apposito form, il main form venisse abilitato.

I tre sorgenti sono:

//Program.cs

using System;
using System.Collections.Generic;
using System.Windows.Forms;

namespace TestPSql
{
    static class Program
    {
        /// <summary>
        /// The main entry point for the application.
        /// </summary>
        [STAThread]
        static void Main()
        {
            Application.EnableVisualStyles();
            Application.SetCompatibleTextRenderingDefault(false);
            Application.Run(new MainForm());
        }
    }
}

//MainForm.cs
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;

namespace TestPSql
{
    public partial class MainForm : Form
    {
        
        
        public MainForm()
        {
            InitializeComponent();
        }

        private void MainForm_Load(object sender, EventArgs e)
        {
            this.Enabled = false;
            LoginForm f = new LoginForm();
            f.ShowDialog();

        }
    }
}

//LoginForm.cs
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Diagnostics;
using System.Drawing;
using System.Text;
using System.Windows.Forms;

namespace TestPSql
{
    public partial class LoginForm : Form
    {
        
        public LoginForm()
        {
            InitializeComponent();
        }

        private bool IsNotEmpty(TextBox t)
        {
            
            if (t.Text.Length == 0)
            {
                LoginError.SetError(t, "CAMPO OBBLIGATORIO");
                return false;    
            }
            else
            {
                LoginError.SetError(t, "");
                return true;
               
            }
        }

        


      
        private void btnLogin_Click(object sender, EventArgs e)
        {
            if (IsNotEmpty(txtUserName) && IsNotEmpty(txtPassword))
            {
                try
                {
                    DbConnection db = new DbConnection();
                    using (Npgsql.NpgsqlConnection cn = new Npgsql.NpgsqlConnection(db.ConnectionString))
                    {
                        cn.Open();
                        Npgsql.NpgsqlParameter[] p = new Npgsql.NpgsqlParameter[2];
                        p[0] = new Npgsql.NpgsqlParameter("@user", DbType.String);
                        p[0].Value = txtUserName.Text;
                        p[1] = new Npgsql.NpgsqlParameter("@password", DbType.String);
                        p[1].Value = txtPassword.Text;
                        string loginString = "SELECT COUNT(id_operatore) FROM t_operatori WHERE username = @user AND password = md5(@password)";
                        Npgsql.NpgsqlCommand cmd = new Npgsql.NpgsqlCommand(loginString, cn);
                        foreach (Npgsql.NpgsqlParameter par in p)
                        {
                            cmd.Parameters.Add(par);
                        }
                        int i = Int32.Parse(cmd.ExecuteScalar().ToString());
                        if (i > 0)
                        {
                            LoginError.SetError(panError, "");
                            this.Close();
                            
                            
                        }
                        else
                        {
                            LoginError.SetError(panError, "AUTENTICAZIONE FALLITA");
                            
                        }
                    }
                }
                catch (Npgsql.NpgsqlException ex)
                {
                    LoginError.SetError(panError, ex.ErrorSql);
                    
                }
            }
            
        }

        

        private void btnCancel_Click(object sender, EventArgs e)
        {
            Application.Exit();
        }

    }
}

Grazie a tutti

RaouL.

[RaouL_BennetH]

mmm.. al momento ho risolto così:

foreach(Form f in Application.OpenForms)
{
   if(f.IsMdiContainer && !f.IsDisposed)
   {
      f.Enabled = true;
   }
}

Ovvio che se qualcuno ha un metodo più elegante/efficiente ben venga

RaouL.