Question

Greeting,
can i use this library in Windows Phone 7?

There exists C# or VB.NET version.

Here is used namspaces:

using System;
using System.Drawing;
using System.Drawing.Imaging;
using System.Text;
using System.Collections.Specialized;
using System.Collections;

Or how can i know that I can use the library or I can’t.

Answer 1

Not without changes – System.Drawing isn’t available in WP7 (or Silverlight in general, for that matter).

The simplest way to find out though is to create a new WP7 class library project, try to add the existing source to it, and then try to add the assemblies that the original code references.