Refresh a form after making edits on second [duplicate]

Answer 1

One way is to pass a reference of Form1 to Form2, like this:

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

    private void buttonLaunchForm_Click(object sender, EventArgs e)
    {
        Form2 form2 = new Form2();
        form2.LauncherForm = this;

        form2.Show();
    }

    public void RefreshFormData()
    {
         // Refresh
    }
}

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

    public Form1 LauncherForm { set; get; }

    private void buttonUpdate_Click(object sender, EventArgs e)
    {
        // do your normal work then:

        LauncherForm.RefreshFormData();
    }
}

The above technique is called "Property-Injection";