is it possible to get a string output from a boolean method?

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I want string output from a boolean method.

For positive cases I'm returning true, but for negative case I need to send one error message which is string only.

Is that possible in C sharp?

Please respond, I want your help.

Posted 2-Dec-10 19:48pm

Sugato Pal

Updated 2-Dec-10 22:14pm

Dalek Dave

v2

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Dalek Dave 3-Dec-10 4:14am

Edited for Grammar.

4 solutions

Solution 4

Is this what you mean?

C#

class Program
{
  static void Main(string[] args)
  {
    Program myProgram = new Program();
    string strMessage = "";
    strMessage = Convert.ToString(myProgram.BoolFunction());
    Console.WriteLine(strMessage);
    Console.ReadKey();
  }

  public bool BoolFunction()
  {
    return true;
  }
}

Posted 2-Dec-10 21:45pm

R. Erasmus

Solution 1

Yes u can return using ref and out parameters of your bool method. :)

Posted 2-Dec-10 19:53pm

binkujsr

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Ankur^\m/ · Accepted Answer · 2010-12-02T20:05:00

Here are your options:

1) Use out parameter[^] to pass the error message. So the message is available to the calling function.

2) Return String from your method instead of Boolean. So, in the calling function, this will be the case:

C#

String valid = someMethod(); //returns true or error code
if (valid == "true") //the quotes are important
{
    //do something
}
else
{
    //you have the error message stored in valid
}

Hope this helps!

Manfred Rudolf Bihy · Accepted Answer · 2010-12-02T20:07:00

Solution 3

Example:

public bool SomeBooleanFunction(out String errorMessage)
{
    errorMessage = "";
    if(checkSomething())
    {
        return true;
    }
    else
    {
        errorMessage = "Something went awfully wrong: XXXX";
        return false;
    }
}

String msg;
bool test = SomeBooleanFunction(out msg);
if(!test)
    Console.WriteLine(msg);

Cheers

Manfred

Posted 2-Dec-10 20:07pm

Manfred Rudolf Bihy

Comments

Dalek Dave 3-Dec-10 4:15am

Yep, good answer.

Ankur^\m/ 3-Dec-10 4:30am

Precise answer. Take another 5! :)