C#

toolTip1.AutoPopDelay = 5000;
toolTip1.InitialDelay = 500;
toolTip1.ReshowDelay = 500;
toolTip1.ShowAlways = true;
toolTip1.SetToolTip(this.btnRun, "Run");
toolTip1.SetToolTip(this.btnSelectDirToSave, "Select Output Directory");
toolTip1.SetToolTip(this.btnSelectTxtFile, "Select File to Process");

public static Form IsFormAlreadyOpen(Type FormType)
{
   foreach (Form OpenForm in Application.OpenForms)
   {
      if (OpenForm.GetType() == FormType)
         return OpenForm;
   }
   return null;
}


Form2 UForm = null;
Form3 YForm = null;

if ((UForm = IsFormAlreadyOpen(typeof(Form2)) == null)
{
    UForm = new Form2();
    UForm.Show();
}
else
{
    UForm.Select();
}

if ((YForm = IsFormAlreadyOpen(typeof(Form3)) == null)
{
    YForm = new Form3();
    YForm.Show();
}
else
{
    MessageBox.Show("Forms are open");
}

Public Class1()
{
    InitializeComponent();
    Initialize();
}

aadikadain wrote:

its important and urgent

static void Main()
{
  Application.EnableVisualStyles();
  Application.EnableRTLMirroring();
  Application.Run(new Form1());
} 

static void Main(string[] args)
{
  Application.EnableVisualStyles();
  Application.EnableRTLMirroring();
  if(args.length > 0)
  {
    Form1 frm = new Form1();
    System.IO.StreamReader myFile = new System.IO.StreamReader(args[0]);
    string line = "";
    line = myFile.ReadToEnd();
    frm.textBox1.Text = line;
    myFile.Close();
    Application.Run(frm);
  }
  else
    Application.Run(new Form1());
}