C# | Convert.ToString(String, IFormatProvider) Method

This method is used to returns the specified string instance and no actual conversion is performed.
Syntax:

public static string ToString (String, IFormatProvider);

Parameters:

• value: It is the string to return.
• provider: It is an object that supplies culture-specific formatting information. This parameter is ignored.

Return Value: This method returns value is returned unchanged.
Below programs illustrate the use of Convert.ToString(String, IFormatProvider) Method:
Example 1:

csharp

// C# program to demonstrate the
// Convert.ToString() Method
using System;
using System.Globalization;

class GFG {

    // Main Method
    public static void Main()
    {
        try {

            // creating object of CultureInfo
            CultureInfo cultures =
              new CultureInfo("en-US");

            // declaring and initializing String array
            string[] values = {"amar", "akbar",
                                    "anthony"};

            // calling get() Method
            Console.Write("Converted string value"
                  + " from a specified string: ");

            for (int j = 0; j < values.Length; j++)
            {
                get(values[j], cultures);
            }
        }

        catch (FormatException e)
        {
            Console.WriteLine("\n");
            Console.Write("Exception Thrown: ");
            Console.Write("{0}", e.GetType(), e.Message);
        }

        catch (OverflowException e)
        {
            Console.WriteLine("\n");
            Console.Write("Exception Thrown: ");
            Console.Write("{0}", e.GetType(), e.Message);
        }
    }

    // Defining get() method
    public static void get(string s,
               CultureInfo cultures)
    {

        // converting string to specified string
        string val = Convert.ToString(s, cultures);

        // display the converted string value
        Console.Write(" {0} ", val);
    }
}

Output:

Converted string value from a specified string:  amar  akbar  anthony

Example 2:

csharp

// C# program to demonstrate the
// Convert.ToString() Method
using System;
using System.Globalization;

class GFG {

    // Main Method
    public static void Main()
    {
        // creating object of CultureInfo
        CultureInfo cultures =
          new CultureInfo("en-US");

        // declaring and initializing a String array
        string value = "The Accidental Prime Minister";

        // calling get() Method
        Console.Write("Converted String: ");

        // converting string to specified string
        string val = Convert.ToString(value, cultures);

        // display the converted string value
        Console.Write("{0}", val);
    }
}

Output:

Converted String: The Accidental Prime Minister

Reference:

• https://docs.microsoft.com/en-us/dotnet/api/system.convert.tostring?view=netframework-4.7.2#System_Convert_ToString_System_String_System_IFormatProvider_