[m_pahlevanzadeh]

خواهشا در مورد Microsoft Visual Studio نظر بدهید.

[Breakneck]

[ltr]
I don't get the idea of this poll, it sounds more like a question, Microsoft .NET is the Framework and Microsoft Visual Studio is one of the IDEs which allows development of solutions using .NET Framework. There are other IDEs like Sharpdevelop, Monodevelop that allow the same thing with sometimes a different approach. Even Eclipse has plug-ins for C# development.
In case of whether it's a claim or not, since Visual Studio is a lot more mature and almost in every way superior to other offerings[1] then it's a fact and not a claim.

[1] By other offerings I am only talking about .NET development tools.
[/ltr]