'Split string based on the first occurrence of the character

How can I split a C# string based on the first occurrence of the specified character? Suppose I have a string with value: 

101,a,b,c,d

I want to split it as 

101

a,b,c,d

That is by the first occurrence of comma character.

c++sharpasp.net.netstring


Solution 1:[1]

string s = "101,a,b,c,d";
int index = s.IndexOf(',');
string first =  s.Substring(0, index);
string second = s.Substring(index + 1);

Solution 2:[2]

You can use Substring to get both parts separately.

First, you use IndexOf to get the position of the first comma, then you split it :

string input = "101,a,b,c,d";
int firstCommaIndex = input.IndexOf(',');

string firstPart = input.Substring(0, firstCommaIndex); //101
string secondPart = input.Substring(firstCommaIndex + 1); //a,b,c,d

On the second part, the +1 is to avoid including the comma.

Solution 3:[3]

Use string.Split() function. It takes the max. number of chunks it will create. Say you have a string "abc,def,ghi" and you call Split() on it with count parameter set to 2, it will create two chunks "abc" and "def,ghi". Make sure you call it like string.Split(new[] {','}, 2), so the C# doesn't confuse it with the other overload.

Solution 4:[4]

In .net Core you can use the following;

var pieces = myString.Split(',', 2);

Returns:

101
a,b,c,d

Solution 5:[5]

var pieces = myString.Split(',', 2);

This won't work. The overload will not match and the compiler will reject it.

So it Must be:

char[] chDelimiter = {','};
var pieces = myString.Split(chDelimiter, 2);

Sources

This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.

Source: Stack Overflow

Solution Source
Solution 1 Arin Ghazarian
Solution 2 Pierre-Luc Pineault
Solution 3
Solution 4 mark_h
Solution 5 Dilan

Related Questions