Create Project
Launch Visual Studio, select [New]-[Project]
from [File] menu.
From the template of [Create a new project] dialog box, select [Windows
Forms App] of [C#], click the [Next] button.
From the [Configure your new project] dialog box, specify the project name
and the location of the project to be created, click the [Next] button.
From the [Additional information] dialog box, select [.NET 8.0(Long-term
support)], and click the [Create] button,
then the project will be created.
* The above is for Microsoft Visual Studio Professional 2022 (64-bit). Item names and commands may differ depending on the version of Visual Studio.
Include Class Library
In order to use the functions of CNT driver in Visual C#, the class library file CcntCs.cs is required.
Select [Project] from the menu bar of Visual
Studio, and select [Add Existing Item] from the pull-down menu.
From the [Add Existing Item] dialog box, specify the CcntCs.cs file, click
the [Add] button, then the class library is added to the project.
You can check whether the registered class
library exists from the tree view in the [Solution Explorer] window of
Visual Studio.
* The above is for Microsoft Visual Studio Professional 2022 (64-bit). Item names and commands may differ depending on the version of Visual Studio.
Modify the Project Setting
The CNT driver supports callbacks, so you
need to change the project settings.
Select [Project] from the menu bar of Visual Studio, and select current
project [Properties] from the pull-down menu.
Select [Build/General] from the tree view on the left side of the [Search
properties] window to display the general build settings.
Check [Unsafe code] in the general build settings.
* The above is for Microsoft Visual Studio Professional 2022 (64-bit). Item names and commands may differ depending on the version of Visual Studio.
Add Name Space
Add the name space to use the methods in
class library.
At the beginning of the C# source code file (with .cs extension), please
add the following line.
using CcntCs;
Create Class Instance
Create an instance of the class to use the
CNT class library.
In the C# source code file (with .cs extension), add the following lines
at the beginning of form class.
public class Form1 : System.Windows.Forms.Form
{
Ccnt cnt = new Ccnt();// <- add
How to Use Class Library Methods
In C#, instead of calling the CNT driver
function directly, call the class library method.
CNT driver functions are called from class library methods.
All the methods in the class library are defined with the name by omitting
the prefix [Cnt] of the function name.
When using with C#, please use the method without prefix Cnt.
For example, when using CntInit function
Ret = cnt.Init ( ・・・・
For example, when using CntReadCount function
Ret = cnt.ReadCount ( ・・・・
Notes on building EXE applications in "Any CPU"
In general, an EXE application built with "Any CPU" specified in the [Active solution platform] item in the Visual Studio settings [Configuration Manager] window can be executed in both 64-bit environment and 32-bit OS environment.
However, when developing an EXE application that supports the .NET8 framework, it is necessary to be aware of the target OS.
Please refer FAQ ".NET execution environment for .NET8 or later" to know more details.