Question

I have created two forms in C# using “Add new item”. Form1 is my default opening form. I’m using the following code to switch to form2:

Form1 class:
    Form form2= new form2();
                this.Hide();
                form2.Show();  



Form2 class:

what should i do here to open the same form1 again without creating the new instant of form1?

Answer 1

A simple solution could be showing the second form modally, then making the first form visible when the second form closes, like this:

  public partial class Form1: Form
  {
    public Form1()
    {
      InitializeComponent();
    }

    private void button1_Click(object sender, EventArgs e)
    {
      Form2 form2 = new Form2();
      this.Hide();
      form2.ShowDialog();
      this.Show();
    }
  }

  public partial class Form2: Form
  {
    public Form2()
    {
      InitializeComponent();
    }

    private void button1_Click(object sender, EventArgs e)
    {
      Close();
    }
  }

Making this work non-modally is left as an exercise 🙂