1,271 questions
Class Library is not an Executable Program.
So, You need another Executable .Net Program to execute and test your library.
The red box is user control from c++/cli.
C++/CLI V.S error " ClassLibrary.dll isn't a valid win32 application" . Changing startup item .
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(0, 11%, 10%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EW%3C/text%3E%3C/svg%3E)
Wami007
296
Reputation points
Hello Everyone...
I am trying to creat "UserControl" then add it to "MainForm" in C++/CLI. But i found only one solution to add "UserControl" to "MainForm" via creating project as a Class Library.dll ...
But in this case I can't Target Startup Item to Main form to Build .exe and V.S gives an error normally when trying to build "ClassLibrary" . Any Solution for it? ....
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Wami007 296 Reputation points
2021-04-11T19:27:10.91+00:00 Must İ need create .dll for adding userControl to Form and import it to another Windows Form Project ?
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Jeanine Zhang-MSFT 11,356 Reputation points Microsoft External Staff2021-04-12T06:35:33.34+00:00 As far as I'm concerned you need create a .dll that contain a user control that can be imported in a windows form.
C++/CLI V.S error " ClassLibrary.dll isn't a valid win32 application" . Changing startup item .
You couldn't run dlls directly, normally they get dynamically loaded into an exe.
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Wami007 296 Reputation points
2021-04-12T07:54:21.357+00:00 I am do it already but , desired make it without .dll :(
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Viorel 122.6K Reputation points2021-04-12T19:44:23.667+00:00 If Visual Studio and the Windows Forms project (EXE) are in good condition, then you do not need a separate Class Library (DLL) for your forms and controls. The forms can be added and designed inside the main Windows Forms project.
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Wami007 296 Reputation points
2021-04-13T08:03:52.853+00:00 I am doing everything but can't add UserControl to form in same Form Project. Visual Studio 2019 installed for C++/cli Project. Separately i added UserControl but it's getting hard to control project for me.
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![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(240, 91%, 33%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EPK%3C/text%3E%3C/svg%3E)
Petrus 【KIM】 546 Reputation points2021-04-12T09:12:02.05+00:00 -
Wami007 296 Reputation points
2021-04-13T08:07:03+00:00 I can add UserControl separately using ClassLibrary but it getting hard to control project and desire make it in same Form Project ((
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Petrus 【KIM】 546 Reputation points
2021-04-14T03:32:39.287+00:00 If your C++/CLI DLL project include an user control, then you can find the control in the Toolbok.
First, in the Toolbok, click "Choose Items..." menu.
Next, Click "Browse..." button and select your DLL file.
Then You can see the control.
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Wami007 296 Reputation points
2021-04-13T09:33:51.097+00:00 If anyone can add UserControl in MainForm (.exe) project Or No way to make it without Seperate (ClassLibrary) tell me please ...