C#: how to get first char of a string?

Question

Just MyString[0]. This uses the String.Chars indexer.

Mystring[0] should be enough

Try this,

string s1="good"; string s=s1.Substring(0,1);

You can use LINQ

char c = mystring.FirstOrDefault()

It will be equal to '\0' if the string is empty.

The difference between MyString[0] and MyString.ToCharArray()[0] is that the former treats the string as a read-only array, while ToCharArray() creates a new array. The former will be quicker (along with easier) for almost anything where it will work, but ToCharArray can be necessary if you have a method that needs to accept an array, or if you want to change the array.

If the string isn't known to be non-null and non-empty you could do:

string.IsNullOrEmpty(MyString) ? (char?)null : MyString[0]

which returns a char? of either null or the first character in the string, as appropriate.