How to create a single diminsional array starting from index 1 instead of zero

Emmad Kareem 81

I am trying to create an single diminsion array that starts from 1 and ends at 7.
I tried this:

    Int32[] lowerBounds = {1};
    Int32[] lengths = {7};
    Int32[] Julia = (Int32[])
    Array.CreateInstance(typeof(Int32), lengths, lowerBounds);

But it generated a run-time error:
System.InvalidCastException: 'Unable to cast object of type 'System.Int32[*]' to type 'System.Int32[]'.'

Any suggestions? Thnak you.

Accepted answer

Castorix31 85,701 Reputation points

2020-11-25T16:34:53.177+00:00
For example =>

Array myArray = Array.CreateInstance(typeof(int), new[] { 7 }, new[] { 1 });
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1 person found this answer helpful.
Emmad Kareem 81 Reputation points

2020-11-26T01:52:49.2+00:00

Thank you for your help. Do you know why the other code in the question did not work?

WayneAKing 4,921 Reputation points

2020-11-26T07:14:57.397+00:00

Do you know why the other code in the question did not work?

You're trying to cast the return to a type that is not valid.

Your code would work if you just change the type of the receiving
variable and eliminate the cast:

Int32[] lowerBounds = { 1 }; Int32[] lengths = { 7 }; //Int32[] Julia = (Int32[]) Array Julia = Array.CreateInstance(typeof(Int32), lengths, lowerBounds);

Wayne

Emmad Kareem 81 Reputation points

2020-11-26T07:18:10.21+00:00

Excellent - Thanks much for your help. Stay safe!
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