Program:

The source code to trim a specified string in C# is given below. The given program is compiled and executed successfully on Microsoft Visual Studio.

//Program to trim a specified string in C#

using System;

class TrimDemo
{
    static void Main(string[] args)
    {
        string str = "";

        Console.Write("Enter a string: ");
        str = Console.ReadLine();

        Console.WriteLine("String Before Trim()####" + str+"####");
        str = str.Trim();
        Console.WriteLine("String After Trim()####" + str+"####");
    }
}

Output:

Enter a string:   Include Help
String Before Trim()####  Include Help ####
String After Trim()####Include Help####
Press any key to continue . . .

Explanation:

Here, we created a class TrimDemo that contains the Main() method. The Main() method is the entry point of the program. Here we declared a string variable str, and then read the value of the string. After that, we printed the string before calling Trim() and method and then trimmed the string from both sides using the Trim() method and printed the trimmed string on the console screen.