How to Open a New Form and Close the Current One in C# Without Closing the New Form?

How to Open a New Form and Close the Current One in C#

When creating applications with multiple forms, it's common to need to open a new form while closing the current one. Here's a solution:

Steve's initial approach of calling this.Close() to close the current form does not work as it also disposes of the new form. To avoid this, Steve's solution can be modified to hide the current form instead and handle the Closed event of the new form to call this.Close.

Modified Solution:

private void OnButton1Click(object sender, EventArgs e)
{
    // Hide the current form instead of closing it.
    this.Hide();

    // Create a new instance of form2.
    var form2 = new Form2();

    // Subscribe to the Closed event of form2.
    form2.Closed += (s, args) => this.Close(); 

    // Show the new form.
    form2.Show();
}

This solution ensures that the new form is shown and the current form is closed once the new form is closed. It provides better control over the form lifecycle and allows for a seamless transition between forms.

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