Show message box in case of exception

Question

I m wondering what the correct way is to pass on an exception from one method to my form   public void test         try               int num   int Parse  gagw              catch  Exception                throw            Form   try       test      catch  Exception ex        MessageBox Show ex Message       in this way i cannot see my text box

User · Answer

try                         your code                   catch  Exception w                        MessageDialog msgDialog   new MessageDialog w ToString

User · Answer

If you want just the summary of the exception use       try               test              catch  Exception ex                MessageBox Show ex Message           If you want to see the whole stack trace  usually better for debugging  use       try               test              catch  Exception ex                MessageBox Show ex ToString               Another method I sometime use is       private DoSomthing int arg1  int arg2  out string errorMessage                 int result           errorMessage   String Empty          try                                     do stuff             int result   42                    catch  Exception ex                         errorMessage   ex Message   OR ex ToString    OR Free text OR an custom object             result   -1                    return result          And In your form you will have something like       string ErrorMessage      int result   DoSomthing 1  2  out ErrorMessage       if   String IsNullOrEmpty ErrorMessage                 MessageBox Show ErrorMessage

User · Answer

There are many ways  for example   Method one   public string test     string ErrMsg   string Empty   try               int num   int Parse  gagw              catch  Exception ex                ErrMsg   ex Message        return ErrMsg     Method two   public void test ref string ErrMsg          ErrMsg   string Empty       try                       int num   int Parse  gagw                      catch  Exception ex                        ErrMsg   ex Message

[c#] Show message box in case of exception

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