C# | Int64.ToString Method | Set - 1

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:

1. ToString(IFormatProvider) Method
2. ToString(String, IFormatProvider) Method
3. ToString( ) Method
4. ToString(String) Method

Here we will discuss the first two methods.

ToString(IFormatProvider) Method

This method is used to convert the numeric value of this instance to its equivalent string representation using the specified culture-specific format information.
Syntax:

public string ToString (IFormatProvider provider);

Parameters: This method takes an object of type IFormatProvider which supplies culture-specific formatting information.
Return Value: This method returns the string representation of the value of the current object in the format specified by the provider parameter.
Example:

The Value is 9223372036854775807 and provider is en-US

Int64.ToString(String, IFormatProvider) Method

This method is used to convert the numeric value of this instance to its equivalent string representation using the specified format and culture-specific formatting information.

Syntax: public string ToString (string format, IFormatProvider provider);
Parameters: 
format: It is a numeric format string. 
provider: It is an object which supplies culture-specific formatting information.
Return Value: This method returns the string representation of the value of the current instance as specified by format and provider. 
 

Example:

The value is 4627836321
The Format is D5
The Provider is fr-FR

Reference: 

• https://learn.microsoft.com/en-us/dotnet/api/system.Int64.tostring?view=netframework-4.7.2