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.
Answers:
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Method 1
You can specify how many substrings to return using string.Split:
var pieces = myString.Split(new[] { ',' }, 2);
Returns:
101 a,b,c,d
Method 2
string s = "101,a,b,c,d";
int index = s.IndexOf(',');
string first = s.Substring(0, index);
string second = s.Substring(index + 1);
Method 3
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.
Method 4
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.
Method 5
In .net Core you can use the following;
var pieces = myString.Split(',', 2);
Returns:
101 a,b,c,d
Method 6
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);
All methods was sourced from stackoverflow.com or stackexchange.com, is licensed under cc by-sa 2.5, cc by-sa 3.0 and cc by-sa 4.0