C# Tutotial : Conversion and parse method : Part 4

Implicit conversion

• When there is no loss of data and no exception thrown, than it is said to be as implicit conversion. It is done by compiler itself.
• e.g. int i = 100;
• float f = i;    <- done successfully

Explicit conversion

• Conversion done by using cast method or by using class from .net framework, is called explicit conversion. explicit conversion also causes loss of data.
• e.g. 1 
• float val = 123.45f;
• int i = (int)val;
• e.g. 2
• float val = 123.45f;
• int i = Convert.ToInt32(val);

Parse method

• It is the method available in datatype to convert the value into suitable form.
• e.g. 1
• string val = "32";
• int num = int.Parse(val);
• In above e.g. 1 in num variable we will get integer 32
• e.g. 2
• string val = "Hello World";
• int num = int.Parse(val);
• In above e.g. 2, an error will be thrown as "input string was not in correct format".
• For using parse method the string should be always a number

Tryparse Method

• It returns a boolean value depending on whether a string is converted or not.
• e.g. 1
• int val = 0;
• string temp = "43";
• bool result = int.TryParse(temp, out val);
• In e.g.1 variable result will have true value and variable val will have the converted result as 43.
• e.g. 2
• int val = 0;
• string temp = "Hello";
• bool result = int.TryParse(temp, out val);
• In e.g.1 variable result will have false value and variable val will have the default value that is assigned as 0;