How to change Map Scale programmaticaly in C# WinForm Project

Question

I have created form with axMapControl and comboBox with values of possible scales (e.g. 1:1 000 000, 1: 500 000, etc).

How can I change current map scale programmaticaly by using value from selectedItem taken from Combobox?

Answer 1

Try this:

IMap _map = ArcMap.Document.FocusMap;
_map.MapScale = Your_Value;

For more information see this : IMap interface and IMap.MapScale Property

Answer 2

You can set IMap.MapScale to set the current map scale.