是否可以从布尔方法获取字符串输出? [英] is it possible to get a string output from a boolean method?

问题描述

我想要从布尔方法输出字符串.

对于肯定的情况，我将返回true，但是对于否定的情况，我需要发送一条仅是字符串的错误消息.

在C语言中有可能吗?

请回复，我需要您的帮助.

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.

推荐答案

以下是您的选择:

1)使用输出参数 [

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:

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
}

希望这会有所帮助！

Hope this helps!

示例:

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);

干杯


曼弗雷德(Manfred)

Cheers


Manfred

这是您的意思吗?

Is this what you mean?

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;
  }
}

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