Exchange of data between forms [C#]

[someone]

Try this:

Form1 form = new Form1();
form.ShowDialog();
this.hash_user.Text = form.textBox36.Text;
The form with ShowDialog is a Modal form(it means it  Blocks at ShowDialog), the with Show it is not a modal form(it will load the form and continue with the program while the form is running).

 

 

Usually when you close The form The controls on that form deinitializes, it is better to save the data in a public variable(or a private one and access it thru public methods);

private struct MyData{
     public string  textBox1
};
public MyData data = new MyData();
....
data.textBox1 = textBox36.Text;
....
Form1 form = new Form1();
form.ShowDialog();
this.hash_user.Text = form.data.textBox1;