How do I change array indexation?

[kindanew]

Hi
When I make an array it allways starts indexing from 0.
How do I make it start on 1 instead in C#?
I want my array to go from 1 to 5 instead of 0 to 4

Sorry if this is a stupid question but I can't seem to find this anywhere.
Thanks!

 

[chiph]

C# arrays always start at 0. The language spec says:

array-creation-expression:
new non-array-type [ expression-list ] rank-specifiersopt array-initializeropt
new array-type array-initializer

where the expression-list specifics how many elements in each dimension, not their starting & ending indices.

However, you can use the System.Array.CreateInstance() method to create a System.Array (not the same as a C# array, but sometimes convertible to/from one) that starts somewhere other than 0. It's method signature is:

public static Array CreateInstance(
Type elementType,
int[] lengths,
int[] lowerBounds
);

Here's how to use it.

int[] lenArray = new int[5];
int[] boundsArray = new int[1];
System.Array a = System.Array.CreateInstance(typeof(int), lenArray, boundsArray);

Console.WriteLine("Lower:" + a.GetLowerBound(0).ToString() + " Upper:" + a.GetUpperBound(0).ToString());

Chip H.

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If you want to get the best response to a question, please read FAQ222-2244 first

 

[kindanew]

Thanks Chip!