string to int array conversion c#

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, Jun 21 '17 at 07:31

Backs · Accepted Answer · 2017-06-21T07:56:16.853

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 '17 at 07:56

answered Jun 21 '17 at 07:33

Backs

24,430
5
58
85

I wondered how it works. can you please explain how it is working. – Shanu Mehta Jun 21 '17 at 07:42

score 1 · Answer 2 · answered Jun 21 '17 at 07:33

1

Try adding ToString() such as;

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

answered Jun 21 '17 at 07:33

ali

1,301
10
12

thanks..now it is working... – Shanu Mehta Jun 21 '17 at 07:40

adjan · Answer 3 · 2017-06-21T07:39:40.710

1

Use char.GetNumericValue:

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

edited Jun 21 '17 at 07:39

answered Jun 21 '17 at 07:33

adjan

13,371
2
31
48

This will works only when i declare double array like double [] ArryDIReadValue = binary.Select(n => char.GetNumericValue(n)).ToArray(); otherwise it gives error. – Shanu Mehta Jun 21 '17 at 07:39
@PriyankaMehta I edited the answer. It just works as you want. – adjan Jun 21 '17 at 07:45
Thanks.... Its working now – Shanu Mehta Jun 21 '17 at 08:38

string to int array conversion c#

3 Answers3