How to decide the errors

How to decide the errors

• jsndgrss

  Please include a complete reproducible small sample.
  
  What is txt1 & txt2 Also, which line is causing the error (line the error is firing on)
  
  In addition, include the exact error you are getting.
  
  Thanks,
    Ayman Shoukry
    VC++ Team
  
  

• Modem56k

  ToDouble isn't a member of String: instead the Double class has a static member function called Parse which takes a String. For example:
  
  

  using namespace System;

  int main()
  {
     String^ str = "3.14";
     double d = Double::Parse(str);
  
     Console::WriteLine("d = {0}", d);
  }

  
  
  

• WillReyn

  if i put 1 + 1.1 the result its 12, i dont understend wy ... where is the poin where come a more 0.1 the correct its 2.1 ...
  
  
  
  
  

• Smth5ter

  ... Sorry but i have dificult to pass the exemple to a project type CLR Windows Form.
  
  

• LaurentLDI

  sorry  the problem its a point, i use a point and not a ",".
  whats the command to open a other form
  
  
  

• John Chen MS

  txt1 and txt2 are meskedtextbox, and the error it is in this lines:
  

  Number1 = txt1->Text->ToDouble;

  Number2 = txt2->Text->ToDouble(0);
  
  Error 1 error C2039: 'ToDouble' : is not a member of 'System::String'
  
  sorry my bad english

  
  
  

• miguelito928

  I'm sorry but you're still not very clear: what exactly are you attempting to do What exactly is your input
  
  Note: Double::Parse cannot handle a string of the form "1 + 1.1" it can only handle valid floating-point constants.

  
  
  

• Houman b

  {

  Double Number1, Number2, Result;

  Number1 = txt1->Text->ToDouble;

  Number2 = txt2->Text->ToDouble(0);

  Result = Number1 - Number2;

  txtr->Text = Result.ToString();

  }
  
  This is my code, and i dont now where is the error
  
  :(

  
  
  

• SJN2K

  why the result its rounded
  double number have this format *.** correct
  
  

• dto

  Take a look at http://msdn2.microsoft.com/library/fdwb3fd7(en-us,vs.80).aspx that explains when the error is triggered.
  
  If you think the error is fired while it is not expected, please post a small sample exhibiting the issue.
  
  Thanks,
    Ayman Shoukry
    VC++ Team
  
  

• shep58029

  What's the input What's the output Please provide more details with your questions.
  
  

• the guy who broke it

  What sort of problem
  
  Try this:
  
  

  Number1 = Double::Parse(txt1->Text);
  Number2 = Double::Parse(txt2->Text);
  

  
  
  

• UncleHarpoon

  Do you mean how to open a new instance of an existing form or how to create a new form
  
  

• Jasper Eenhoorn

  ^{a exist...
  i have 2 forms, form1 and form2.
  in form1 i have a button, and when i click in this button, will open form2.
  whats the code to do this}
  
  
  
  
• How to decide the errors