In .NET, which loop runs faster, 'for' or 'foreach'?

Question

In C#/VB.NET/.NET, which loop runs faster, for or foreach?

Ever since I read that a for loop works faster than a foreach

Answer 1

"Are there any arguments I could use to help me convince him the for loop is acceptable to use?"

No, if your boss is micromanaging to the level of telling you what programming language constructs to use, there's really nothing you can say. Sorry.