Int64.Parse(String) Method is used to convert the string representation of a number to its 64-bit signed integer equivalent.
Syntax:
public static long Parse (string str);
Here, str is a string containing a number to convert. The format of str will be [optional white space][optional sign]digits[optional white space].
Return Value: It is a 64-bit signed integer equivalent to the number contained in str.
Exceptions:
- ArgumentNullException: If str is null.
- FormatException: If str is not in the correct format.
- OverflowException: If str represents a number less than MinValue or greater than MaxValue.
Below programs illustrate the use of above-discussed method:
Example 1:
// C# program to demonstrate // Int64.Parse(String) Method using System;
class GFG {
// Main Method
public static void Main()
{
// passing different values
// to the method to check
checkParse( "9223372036854775807" );
checkParse( "29,22337,20368547" );
checkParse( "-922337203685477" );
checkParse( " 9223372075807" );
}
// Defining checkParse method
public static void checkParse( string input)
{
try {
// declaring Int64 variable
long val;
// getting parsed value
val = Int64.Parse(input);
Console.WriteLine( "'{0}' parsed as {1}" , input, val);
}
catch (FormatException)
{
Console.WriteLine( "Can't Parsed '{0}'" , input);
}
}
} |
Output:
'9223372036854775807' parsed as 9223372036854775807 Can't Parsed '29,22337,20368547' '-922337203685477' parsed as -922337203685477 ' 9223372075807' parsed as 9223372075807
Example 2: For ArgumentNullException
// C# program to demonstrate // Int64.Parse(String) Method // for ArgumentNullException using System;
class GFG {
// Main Method
public static void Main()
{
try {
// passing null value as a input
checkParse( null );
}
catch (ArgumentNullException e) {
Console.Write( "Exception Thrown: " );
Console.Write( "{0}" , e.GetType(), e.Message);
}
catch (FormatException e) {
Console.Write( "Exception Thrown: " );
Console.Write( "{0}" , e.GetType(), e.Message);
}
}
// Defining checkparse method
public static void checkParse( string input)
{
// declaring Int64 variable
long val;
// getting parsed value
val = Int64.Parse(input);
Console.WriteLine( "'{0}' parsed as {1}" , input, val);
}
} |
Output:
Exception Thrown: System.ArgumentNullException
Reference: