C# | Int64.ToString Method | Set - 2
Last Updated :
11 Jul, 2025
Int64.ToString Method is used to convert the numeric value of the current instance to its equivalent string representation. There are 4 methods in the overload list of this method as follows:
- ToString(IFormatProvider) Method
- ToString(String, IFormatProvider) Method
- ToString() Method
- ToString(String) Method
Here we will discuss the last two methods.
ToString() Method
This method is used to convert the numeric value of the current instance to its equivalent string representation.
Syntax:
public override string ToString ();
Return Value: This method returns the string representation of the value of the current instance, consisting of a minus sign if the value is negative, and a sequence of digits ranging from 0 to 9 with no leading zeroes.
Example:
csharp
// C# program to illustrate the
// Int64.ToString() Method
using System;
using System.Globalization;
class GFG {
// Main Method
public static void Main()
{
Console.WriteLine("The String values are: ");
// calling the method
result(Int64.MaxValue);
result(Int64.MinValue);
result(56465568796);
result(456478923100);
}
// result() method
public static void result(long p)
{
// using ToString() method
string str = p.ToString();
// Display the value
Console.WriteLine("The Corresponding String "+
"Value is: {0}", str);
}
}
Output:
The String values are:
The Corresponding String Value is: 9223372036854775807
The Corresponding String Value is: -9223372036854775808
The Corresponding String Value is: 56465568796
The Corresponding String Value is: 456478923100
ToString(String) Method
This method is used to convert the numeric value of the current instance to its equivalent string representation, using the specified format.
Syntax:
public string ToString (string format);
Parameters: This method takes standard or custom numeric format string.
Return Value: This method returns the string representation of the value of this instance as specified by format.
Example:
csharp
// C# program to demonstrate the
// Int64.ToString(String) Method
using System;
class GFG {
// Main Method
public static void Main()
{
try {
// Declaring and initializing value
long val = 7978414563;
// Declaring and initializing format
string format = "E2";
// using the method
string result = val.ToString(format);
// Display the result
Console.WriteLine("The value of string is {0}", result);
}
catch (FormatException e) {
Console.WriteLine("Format is invalid.");
Console.Write("Exception Thrown: ");
Console.Write("{0}", e.GetType(), e.Message);
}
}
}
Output:
The value of string is 7.98E+009
Reference:
