Opening a new form in same window

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Windows

Visual-Studio

, +

Hello!

I'm trying to build an application concisting of several different forms. When I click on a button I want to navigate to another form. I manage to do this by writing:

Form1 form1 = new Form1();
form1.Show();

However, it opens in a new window and I want it to be opened in the same window. Is there a way to do this? I also want the user to be able to upload pictures which then is gonna go into a database, by a button_click, is this possible. I haven't worked eith apps that much, just web-programming.

All the best

Simon