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Thanks for getting back. Yes, it's important to track all the details.
"(I) am amazed to see myself here rather than there ... now rather than then".
― Blaise Pascal
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If your code doesn't do what you think it should, asking a question of others isn't the first thing you should do!
Visual Studio is an "IDE" - short for "Integrated Development Environment" - and that means it contains a lot of tools designed to help you create your code. One of the most important is the debugger, which lets you run your code (and even change it!) while you look at what is going on.
Have a look here: First look at the debugger - Visual Studio | Microsoft Docs[^] and it will help you get started with it - it may seem like a lot of effort, but the basics you will pick up really quickly, and a good familiarity with the debugger will save you a huge amount of time and hair pulling later! Most developers probably spend more time there than actually writing code 
Sent from my Amstrad PC 1640
Never throw anything away, Griff
Bad command or file name. Bad, bad command! Sit! Stay! Staaaay...
AntiTwitter: @DalekDave is now a follower!
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Hi All,
We need recommendation on any software/tool/online tool for designing forms.
Below are the conditions which should be matched:
1. Form designed can be user cross platform Web/Windows/Andriod/iOS
2. Form designed can be used offline or online. Offline means we can download the form designed and can use in our application.
3. Data from the form should not be saved on third party tools used instead should be saved on our local database.
4. Form designer tool should have various options for controls like file upload, draw on image control (can select image and draw on it).
5. Form designer tool can be either free or licences.
Any help will be appreciated.
Thanks
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Bonsoir, j'ai un question concernant le protocole MODBUS RTU RS485. Je suis en train d'utiliser le langage c# pour manipuler le programme.
Mon problème était l'échange entre le maître et l'esclave.En fait,la réception de des données exactement.
Pouvez-vous m'aider?
Et merci.
[Google translate]
Good evening, I have a question about the protocol MODBUS RTU RS485. I am using the C # language to manipulate the program.
My problem was the exchange between the master and the slave. In fact, receiving data exactly.
Can you help me?
And thank you.
[/Google Translate - OriginalGriff]
modified 30-Apr-19 12:29pm.
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This is an English language site, and we can only accept questions in that language.
Plus ... there is nowhere near enough information there to give us any idea what your problem might be: remember that we can't see your screen, access your HDD, or read your mind - we only get exactly what you type to work with; we get no other context.
Please, think about your problem and try again - perhaps using Google Translate - with information about your existing code and any errors that you get.
***
Ceci est un site en anglais et nous ne pouvons accepter que les questions dans cette langue.
De plus, il n'y a pratiquement aucune information suffisante pour nous donner une idée de votre problème: rappelez-vous que nous ne pouvons pas voir votre écran, accéder à votre disque dur ou lire dans vos pensées - nous obtenons exactement ce que vous tapez au travail avec; nous n'obtenons aucun autre contexte.
Réfléchissez bien à votre problème et essayez à nouveau - peut-être en utilisant Google Translate - en fournissant des informations sur votre code existant et les erreurs éventuelles.
Sent from my Amstrad PC 1640
Never throw anything away, Griff
Bad command or file name. Bad, bad command! Sit! Stay! Staaaay...
AntiTwitter: @DalekDave is now a follower!
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Hi,
may I suggest you study this CodeProject article first: Simple Modbus Protocol in C# / .NET 2.0[^].
I haven't read it but it seems to be right on target. It explains a lot and offers a complete downloadable program. It may be a little dated, but maybe so is MODBUS itself.
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Dear all,
I'm having a brain melt down...
Why do I get a red squiggly on the if clause?
input = Console.ReadLine();
if(input = "stop")
{
Console.WriteLine(result);
}
else
{
converted = Convert.ToInt32(input);
result = result + converted;
}
And yes I know there are other issues with the thing. 
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Because this is C#, not C, or C++.
C# has a concept of boolean values: true and false, C and C++ don't.
So an assignment is legal (though often dangerous) in C and C++ because any non-zero value is true and zero is false.
But it isn't in C#: if requires a condition that evaluates to true or false explicitly.
Probably what you meant to say was:
if (input == "stop") Not
if (input = "stop")
Sent from my Amstrad PC 1640
Never throw anything away, Griff
Bad command or file name. Bad, bad command! Sit! Stay! Staaaay...
AntiTwitter: @DalekDave is now a follower!
modified 30-Apr-19 9:37am.
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Of course.
Thanks.
I feel even more melted down...
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Don't worry about it - we've all done it. You tend to read what you meant to write - or at least I do ...
Just be grateful that the C# compiler spots it - it was a whole load harder to find the problem at run time in C! 
Sent from my Amstrad PC 1640
Never throw anything away, Griff
Bad command or file name. Bad, bad command! Sit! Stay! Staaaay...
AntiTwitter: @DalekDave is now a follower!
modified 30-Apr-19 10:36am.
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OriginalGriff wrote: C# has a concept of boolean values: true and false, C and C++ don't.
Are you sure?
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I'm trying not to confuse the newbie too much. Modern C++ does, but ... zero / non zero still works as well ...
Sent from my Amstrad PC 1640
Never throw anything away, Griff
Bad command or file name. Bad, bad command! Sit! Stay! Staaaay...
AntiTwitter: @DalekDave is now a follower!
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How about the following in C:
int i = 5;
if (i == 5) {}
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Not really - the == operator still returns zero / nonzero, as do all the other comparison operators.
if (i != 5) {}is the same as
if (i - 5) {}(and is normally executed as exactly that in machine code).
C# genuinely has boolean types - which internally use 0/1 - but which are the only types permitted as the result of a conditional statement.
Sent from my Amstrad PC 1640
Never throw anything away, Griff
Bad command or file name. Bad, bad command! Sit! Stay! Staaaay...
AntiTwitter: @DalekDave is now a follower!
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well, while you are here, see if you get some ideas from this, and see this for more ideas: [^]
int result = -1;
int converted = 0;
bool conversionok = false;
Console.WriteLine("Enter an integer, or 'stop'");
string input = Console.ReadLine();
if (input == "stop")
{
Console.WriteLine($"stopped: result = {result}");
}
else
{
conversionok = Int32.TryParse(input, out converted);
if (conversionok)
{
result = result + converted;
Console.WriteLine($"conversion ok: result = {result}");
}
else
{
Console.WriteLine($"conversion fail: result = {result}");
}
}
Console.ReadLine();Yes, this code can be simplified; it is written out "more fully" here for educational purposes.
«Where is the Life we have lost in living? Where is the wisdom we have lost in knowledge? Where is the knowledge we have lost in information?» T. S. Elliot
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Quote: if(input = "stop"
I suspect you are coming over from Visual Basic, in which the equality test is pretty much the way you wrote it. In C#, the equality operator is ==. Hence, your snippet should be as follows.
f(input == "stop")
{
Console.WriteLine(result);
}
else
{
converted = Convert.ToInt32(input);
result = result + converted;
<pre>
}</pre>
David A. Gray
Delivering Solutions for the Ages, One Problem at a Time
Interpreting the Fundamental Principle of Tabular Reporting
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How to do round corner of text box , buttons, foam
in windows foam application in C#
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You either buy a component-pack that does it, or you write custom drawing routines for your controls, using owner-drawing. We have articles on the subject if you search the site.
It would also mean that your app is no longer following the standard, and might not be as recognizable to the average user as the normal controls; I prefer the boring look, because it is recognizable and very predictable for the enduser.
Bastard Programmer from Hell 
If you can't read my code, try converting it here[^]
"If you just follow the bacon Eddy, wherever it leads you, then you won't have to think about politics." -- Some Bell.
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Actually, you can do rounded corners without OwnerDraw/OnPaint via GraphicPath => Region easily. See my answer below.
«Where is the Life we have lost in living? Where is the wisdom we have lost in knowledge? Where is the knowledge we have lost in information?» T. S. Elliot
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Cool, tx for sharing
Bastard Programmer from Hell
If you can't read my code, try converting it here[^]
"If you just follow the bacon Eddy, wherever it leads you, then you won't have to think about politics." -- Some Bell.
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Use WPF / XAML (transparent background; rounded borders).
Everything else in Windows Forms is a hack.
"(I) am amazed to see myself here rather than there ... now rather than then".
― Blaise Pascal
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You can make any WinForm Control have "rounded corners" without custom painting (OwnerDraw).
1. create a Component that sub-classes the native Control.
1.a. add references:
using System.Drawing;
using System.Drawing.Drawing2D;
2. based on the Bounds of the Control, develop a Graphic Path of the desired shape.
3. set the Region of the Control to the Graphics Path.
There are many examples of how to do this on the web; here's a good one: [^].
For an example that does custom painting: your friend, CodeProject, has an excellent resource: [^].
«Where is the Life we have lost in living? Where is the wisdom we have lost in knowledge? Where is the knowledge we have lost in information?» T. S. Elliot
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