Several ways to convert value types

The conversion of reference types has implicit conversions, casts, as conversions, and so on. There are many ways to convert value types, which are summarized in this article.

-Implicit conversion

int i = 10;
float f = i;
Console.WriteLine (f);

In the case of a value type, an implicit conversion can be achieved when the numeric range of the converted variable is less than the range of the target variable, and if it is a reference type, the subclass can be implicitly converted to the parent class.

-Cast

float f = 10.56f;
int i = (int) F;
Console.WriteLine (i);

If it is a value type, consider casting if the value range of the converted variable is greater than the array range of the target variable, and if it is a reference type, the parent class can be cast to a subclass. It is important to note that casting may result in some loss of precision.

-Convert by static method of System.Convert

such as converting an integral type into Sysem.Char a type.

char result = Convert.tochar (68);
Console.WriteLine (result);

PassSystem.ConvertConversion failures are reportedOverflowExceptionAbnormal.

-static method by value type

Converts a string to an int type.

string str = "one";
int int. Parse (str);
Console.WriteLine (i);

If the string contains non-numbers, it throws system.formatexception exception.

string str = "11a";
int int. Parse (str);
Console.WriteLine (i);

How to avoid this situation?
-- int.TryParse Use the method to avoid this situation.

string str = "11a";
int result = 1;
BOOL int  out result);
if (issuccess)
{
    Console.WriteLine (result);
}
Else
{
    Console.WriteLine (" conversion failed ");
}

-Via IConvertible interface method

Because all value types implement an IConvertible interface, you can implement value type conversions through the interface's methods.

char  result = ((iconvertible) 68). ToChar (null ); 
 
console.writeline (result); 
 

If the conversion fails, an System.InvalidCastException exception is thrown.

Several ways to convert value types