Feedback Case Number: 69762
mbString.StringValue( 0, mbString.Size, Encodings.UTF8 )
When size is zero an Out Of Bounds exception is raised. Surely this should just return an empty string.
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Hm…I would argue that it’s correct behavior.
String.Left( 0 ), String.Right( 0 ) and String.Middle( 0, 0 ) don’t generate exceptions, so it should be consistent, at least.
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True. Then it’s a bug. 
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I can well imagine that this is intentional behavior. Therefore I check all parameters before calling a function (same as like a nil check for record/row sets or object access in general). If you want a StringValue of zero length from a memory block, there is maybe something wrong before the function call😉
One significant use of MemoryBlock is for very fast string concatenation. Simply having an empty string isn’t an error.