C# string operation -

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this question has answer here:

i have string:

string str = "abc = def; \r\n header \r\n { \r\n def"

in string want string before character { i.e, "header".

i can index of { 

str.indexof('{')

but how can string before '{' ?

edited after codecaster comment

string str = "abc = def; \r\n header \r\n { \r\n def"  int length = str.indexof('{'); // if there no match - resulted value -1  string result = (length < 0) ? string.empty : str.substring(0, length);

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