StringBuilder.ToString Method (Int32, Int32)
Converts the value of a substring of this instance to a String.
Assembly: mscorlib (in mscorlib.dll)
The starting position of the substring in this instance.
The length of the substring.
Return ValueType: System.String
A string whose value is the same as the specified substring of this instance.
startIndex or length is less than zero.
The sum of startIndex and length is greater than the length of the current instance.
Available since 4.5
Available since 1.1
Portable Class Library
Supported in: portable .NET platforms
Available since 2.0
Windows Phone Silverlight
Available since 7.0
Available since 8.1