string to int array conversion c# [duplicate]

Question

I have a string whose value is '12345678'. I want to assign this value to integer array like the first index of the array contains 1, the second index of array contains 2 so on. So when I write below code and execute then i received value 48 for 0 index and value 49 for second index, ascii value of my number. Declaration

int[] ArryDIReadValue = new int[DI_COUNT_CHANNEL];
string binary = Convert.ToString(portData, 2);

ArryDIReadValue = binary.Select(n => Convert.ToInt32(n)).ToArray();

Could someone please help to overcome this problem.

What about binary.ToCharArray(); ? Afterwards you can parse each char to an int and paste them into your ArryDIReadValue array. — michip96
– michip96, Commented Jun 21, 2017 at 7:31

Backs · Accepted Answer · 2017-06-21 07:56:16Z

2

ArryDIReadValue = binary.Select(n => (n - '0')).ToArray();

Simple and fast.

n - is char. So, chars 0, 1, ... 9 has codes 30, 31, ... 39. So, to get int value, we need to substract from every code 30. And we know, 30 is code of char 0.

edited Jun 21, 2017 at 7:56

answered Jun 21, 2017 at 7:33

Backs

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1 Comment

Shanu Mehta Over a year ago

I wondered how it works. can you please explain how it is working.

ali · Accepted Answer · 2017-06-21 07:33:01Z

1

Try adding ToString() such as;

ArryDIReadValue = binary.Select(n => Convert.ToInt32(n.ToString())).ToArray();

answered Jun 21, 2017 at 7:33

ali

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1 Comment

Shanu Mehta Over a year ago

thanks..now it is working...

adjan · Accepted Answer · 2017-06-21 07:39:40Z

1

Use char.GetNumericValue:

ArryDIReadValue = binary.Select(n => (int)char.GetNumericValue(n)).ToArray();

edited Jun 21, 2017 at 7:39

answered Jun 21, 2017 at 7:33

adjan

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3 Comments

Shanu Mehta Over a year ago

This will works only when i declare double array like double [] ArryDIReadValue = binary.Select(n => char.GetNumericValue(n)).ToArray(); otherwise it gives error.

adjan Over a year ago

@PriyankaMehta I edited the answer. It just works as you want.

Shanu Mehta Over a year ago

Thanks.... Its working now

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