Usage of substring in C #

C # contains two overload functions. Example:Code, Vs2005 compiled through using system; Using system. Collections. Generic; Using system. Text; namespace sln_sub { Class Program { Static void main (string [] ARGs) { String mystring = "a quick Fox is jumping over the lazy dog"; // substring () contains two overload functions in C #. // Example string substring1 = mystring. substring (0); // If the input parameter is a long integer and greater than or equal to 0, // Start with the long position, // All the remaining strings are taken after the truncation. // If the input value is smaller than 0, // The system throws an argumentoutofrange exception. // Indicates that the parameter range is out of the bounds string substring2 = mystring. substring (0, 11); // If two long integers are input, // The first one is the starting position of the original string. // The last parameter is the length of the substring. // The exception console. writeline (substring1) occurs if the conditions are not met ); Console. writeline (substring2 ); Console. Readline (); } } }ProgramOutput result: a quick Fox is jumping over the lazy dog A quick Fox In addition, evaluate the position of character a in string a: A. indexof ('A ').