assert() method in c#

Hey Chandu!

 

An assertion is code that’s used during development—usually a routine or macro—that allows a program to check itself as it runs. When an assertion is true, that means everything is operating as expected. When it’s false, that means it has detected an unexpected error in the code.


For example, if the system assumes that a customer-information file will never have more than 50,000 records, the program might contain an assertion that the number of records is less than or equal to 50,000. As long as the number of records is less than or equal to 50,000, the assertion will be silent. If it encounters more than 50,000 records, however, it will loudly “assert” that there is an error in the program.

using System;
using System.Diagnostics;

static class Program
{
    static void Main()
    {
	int value = -1;
	// A.
	// If value is ever -1, then a dialog will be shown.
	Debug.Assert(value != -1, "Value must never be -1.");

	// B.
	// If you want to only write a line, use WriteLineIf.
	Debug.WriteLineIf(value == -1, "Value is -1.");
    }
}

Result
    A. The dialog is displayed.
    B. Message is written to the Output: Value is -1.

Thank you !!

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Hi,

 

Assert sends a strong message to the developer. An assertion interrupts normal operation of the program but does not terminate the application. The Debug.Assert method in the System.Diagnostics class provides a way to implement this.

 

More about..!!

 

https://msdn.microsoft.com/en-us/library/ttcc4x86.aspx

 

http://www.dotnetperls.com/assert

 

If the answer is helpful.Then please accept it..!!