How to create a var inside of a void and then access it outside of that

Question

I have a button that when clicked opens a OpenFileDialog:
private void ImportNether_Click_1(object sender, EventArgs e)
{
OpenFileDialog mydialog = new OpenFileDialog();
mydialog.InitialDirectory = "C:";
mydialog.Title = "Open Jar File";
mydialog.Filter = "Jar files (.jar)|.jar";
mydialog.ShowDialog();
var filetorun = (new FileInfo(mydialog.FileName));
}

and was wondering how I could access that var from a different void?
(I am very new to visual studio and .net apps and am learning as I go so sorry if this is a dumb question)

Answer 1

You would need a class level variable if you want to access in other methods

  FileInfo filetorun  = null;  

 private void ImportNether_Click_1(object sender, EventArgs e)  
 {  
       OpenFileDialog mydialog = new OpenFileDialog();  
       mydialog.InitialDirectory = "C:";  
       mydialog.Title = "Open Jar File";  
       mydialog.Filter = "Jar files (.jar)|.jar";  
       mydialog.ShowDialog();  
       filetorun = (new FileInfo(mydialog.FileName));  
  }  

Answer 2

lol I didn't expect it to be that simple thanks!