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.NET Forum / .NET Framework / CLR / March 2006Size of Array in bytes
Is there a way to find the size of the entire array in .NET I tried using Marshal.SizeOf() but apprently it gives me an ArgumentException if I use a value type. So if I have an array; int[] arr = new int[] {1,2,3,4}; can I get the size of the array in bytes? source > So if I have an array; > int[] arr = new int[] {1,2,3,4}; > can I get the size of the array in bytes? In basic, I can use this: Dim aa() As Long = {1, 2, 3} Dim ii As Integer = aa.Length * Marshal.SizeOf(aa(0)) You should be able to use a C equivalent. Actually I was reading another C++ group and found someone asked how to find the length of the array withouth using any inbuilt function the solution that was suggested in C++ was sizeof(arr)/sizeof(arr[0]) I can't seem to use sizeof for arrays in C# as it expects a value type and if I try to use Marshal.SizeOf gives me argument exception. So that made me think of asking this questoin. unless I am doing something wrong in using sizeof source >> So if I have an array; >> int[] arr = new int[] {1,2,3,4}; [quoted text clipped - 6 lines] > > You should be able to use a C equivalent. What do you mean by value type? Array's are always reference types. Willy. | Is there a way to find the size of the entire array in .NET | I tried using Marshal.SizeOf() but apprently it gives me an [quoted text clipped - 5 lines] | | source What I mean by that is if I use Marshal.SizeOf(int) //value type or Marshal.SizeOf(arr[0]) it gives me argument exception sorry if I was not clear on that source > What do you mean by value type? Array's are always reference types. > [quoted text clipped - 9 lines] > | > | source Console.WriteLine(sizeof(int)); and: int[] ia = new int[2] {0, 2}; Console.WriteLine(Marshal.SizeOf(ia[0])); should both output 4. Willy. | What I mean by that is | if I use Marshal.SizeOf(int) //value type [quoted text clipped - 18 lines] | > | | > | source
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