static void Main() { Application.EnableVisualStyles(); Application.SetCompatibleTextRenderingDefault(false); // Test f = new Test(); // f.Install(); frmLogin frmlogin = new frmLogin(); frmlogin.mainFrm = new Form1("0000"); DialogResult res = frmlogin.ShowDialog(); if(res!= DialogResult.Cancel || !string.IsNullOrEmpty(frmlogin.CURRENT_LEVEL)) Application.Run(new Form1(frmlogin.CURRENT_LEVEL)); // Application.Run(new Form1("1111")); }