What is the purpose of assert() in C# (C Sharp)?

You can include a logical condition in the assert method. If the condition evaluation returns false then the assert fails and appropriate call stack is displayed to the User. There are many overloaded versions of assert method.

Here is an example to demonstrate the usage of this method:

namespace Application1 {
public class sampleClass {
public static void Main() {
Console.WriteLine("Enter the number:");
int sampleNum = Int32.Parse(Console.ReadLine());
Debug.Assert(sampleNum > 0);
float var1 = 100 / sampleNum;
Console.WriteLine("Result = {0}", var1);
}
}
}

Execute this program and enter the number as 0. Now the condition sampleNum>0 will fail. Hence you will get the following assertion failure message:

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