in Form1.cs file add following code...
public string val { get; set; }
private void btn_sub1_Click(object sender, EventArgs e)
{
Form2 f2 = new Form2();
f2.Show();
}
private void Form1_Load(object sender, EventArgs e)
{
method1();
}
public void method1()
{
if (val != "")
{
txtbx1.Text = val;
}
}
On Form2.cs file add following code...
private void btn_sub2_Click(object sender, EventArgs e)
{
foreach (Form form in Application.OpenForms)
{
if (form.Name.Equals("Form1"))
{
((Form1)form).val = txtbx2.Text;
((Form1)form).method1();
}
}
this.Close();
}
Enjoy Coding...