- 1 year ago
How to use NewLazyDLL (golang) to custom dll export from c# to set parameters
To use NewLazyDLL
in Go to call a custom DLL exported from C# and set parameters, you can follow these steps:
Export the desired functions from your C# DLL using the
DllImport
attribute and theextern
keyword. For example, let's say you have a C# DLL with a functionSetParameters
that takes two integer parameters:csharpusing System.Runtime.InteropServices;
public class MyDll
{
[DllImport("mydll.dll")]
public static extern void SetParameters(int param1, int param2);
}
Compile your C# code to create the DLL file (
mydll.dll
in this example).In your Go code, use the
syscall.NewLazyDLL
function to load the DLL dynamically. Then, use theLazyProc
function to obtain a function pointer to the exported function:gopackage main
import (
"syscall"
)
func main() {
dll := syscall.NewLazyDLL("mydll.dll")
setParameters := dll.NewProc("SetParameters")
// Set the parameter values
param1 := 10
param2 := 20
// Call the function with the parameters
setParameters.Call(uintptr(param1), uintptr(param2))
}
In this example, we load the DLL using
NewLazyDLL
and obtain a function pointer usingNewProc
. Then, we set the parameter values and call the function usingCall
, passing the parameters asuintptr
values.Build and run your Go program to invoke the C# DLL function with the specified parameters.
Make sure to adjust the DLL name and function name in the Go code (mydll.dll
and SetParameters
in this example) to match your actual C# DLL and function names.
Note that the syscall
package in Go is platform-specific, and the code provided here assumes a Windows environment. If you're running on a different platform, you may need to use a different package or approach to interact with DLLs.