What is the difference between & and && operators in C#

Question

I am trying to understand the difference between & and &&operators in C#. I searched on the internet without success. Can somebody plea

Answer 1

Below example and explanation's may help.

Example:

    public static bool Condition1()
    {
        return false;
    }

    public static bool Condition2()
    {
        return true;
    }

1. Logical Operator

& (ampersand) Logical AND operator

| (pipeline) Logical OR operator

Used for ensuring all operands are evaluated.

if(Condition1() & Condition2())
{
  Console.WriteLine("This will not print");

  //because if any one operand evaluated to false ,  
  //thus total expression evaluated to false , but both are operand are evaluated.
}

 if (Condition2() | Condition1())
 {
   Console.WriteLine("This will print");

   //because any one operand evaluated to true ,  
  //thus total expression evaluated to true , but both are operand are evaluated.
 }

2. Conditional Short Circuit Operator

&& (double ampersand) Conditional AND operator

|| (double pipeline) Conditional OR operator

Used for Skipping the right side operands , Has Side effects so use carefully

if (Condition1() && Condition2())
{
   Console.WriteLine("This will not print");

   //because if any one operand evaluated to false,
   //thus total expression evaluated to false , 
   //and here the side effect is that second operand is skipped 
   //because first operand evaluates to false.
}

if (Condition2() || Condition1())
{
   Console.WriteLine("This will print");

  //because any one operand evaluated to true 
  //thus remaining operand evaluations can be skipped.
}

Note:

To get better understanding test it in console sample.

References

dotnetmob.com

wikipedia.org

stackoverflow.com