C# Calling a method from another Form

Question

Hi I have 2 Form Form1 and Form2

Form1 have a table and there is my records and there is a Void for refresh the table in the Form1.

Form2 is my insert form I

Answer 1

Adjust the construct for Form2 so it takes an extra parameter, like this:

...
private Form1 mainWindow;
public Form2(Form1 mainWindow)
{
   this.mainWindow = mainWindow;
}
...
public void HaveSavedSql()
{
   this.mainWindow.RefreshAll();
}

You should consider however looking up on Interfaces so you can seperate concerns. Interfaces are useful for many things!