How to implement zoom in or out the current ModelSpace in AutoCAD like mouse wheel to zoom by using C# .NET API

[jelly_oy]

I want to implement zoom in or out the current ModelSpace in AutoCAD2022 like using the mouse wheel to zoom in or out by using C# .NET API. I use the following code but it just can scale the modelspace to max display all entities. If I want to zoom

in or out the modelspace by custom specific scale, How can I achieve this. My code is below.

editor.Command("_.ZOOM", "_E");

 I would appreciate it if anyone could provide a simple example.

[tramber]

Zoom works with :

absolute : n

relative : nx

absolute in paperspace viewports : nxp

zoom

3

zoom

3x

zoom

3xp

"_e" stands for "Extend" 

I guessthe answer is 

editor.Command("_.ZOOM", ".5x"); (out)

editor.Command("_.ZOOM", "2x"); (in)

[TheCADnoob]

If you are sending the command (as it looks like) change E to a numeric value. 1 will zoom in by a factor of 1. to zoom out change it to a decimal .1 etc. 

You will likely need to adjust those values to something more appropriate to what you are trying to achieve.

[jelly_oy]

hi, Dear friends, Thank you very much for providing various examples, I will try to approach my idea.

[jelly_oy]

hi my dear friends, Thank you very much for your reply and suggestion, I will try it by using decimal parameters.

[jelly_oy · Accepted solution]

I use the following two line codes to resolved my problem.

editor.Command("_.ZOOM", "_E");
editor.Command("_.ZOOM", ".2");

Thank you all for reply to my question.