Are .NET string operations case sensitive?

Question

Are .NET string functions like IndexOf(\"blah\") case sensitive?

From what I remember they aren\'t, but for some reason I am seeing bugs in my app where the

Answer 1

One thing I'd like to add to the existing answers (since you were originally asking about ASP.NET):

Some name/value collections, such as the Request.QueryString and probably also Request.Form are not case-sensitive. For example if I navigate to an ASPX page using the following URL

http://server/mypage.aspx?user=admin

then both of the following lines will return "admin":

var user1 = Request.QueryString["user"];
var user2 = Request.QueryString["USER"];