Answers for "split on , c#"

how consider the first caracter in Split c#

Considerar somente a primeira string especificada para realizar o split
You can specify how many substrings to return using string.Split:

string myString = "101.a.b.c.d"

var pieces = myString.Split(new[] { '.' }, 2);
Returns:

101
a.b.c.d

split string in c#

string phrase = "The quick brown    fox     jumps over the lazy dog.";
string[] words = phrase.Split(' ');

foreach (var word in words)
{
    System.Console.WriteLine($"<{word}>");
}