C#•8mo ago

✅ problems with executing code from variable

earlier I asked a question in this server how to execute code from variable. Now i have another problem: usual code is executing good, but my code doesn't want to, it execute with error

17 Replies

das VainstaintischOP•8mo ago

code:

using Microsoft.CodeAnalysis;
using Microsoft.CodeAnalysis.CSharp;
using Microsoft.CodeAnalysis.CSharp.Scripting;
using Microsoft.CodeAnalysis.Scripting;
using System.Runtime.InteropServices;

namespace Testapp
{
    internal class Program
    {
        static async Task Main(string[] args)
        {

            var codeToCompile = @"
                [DllImport(""user32.dll"")]
                static extern void mouse_event(int dwFlags, int dx, int dy, int dwData, int dwExtraInfo);
                [DllImport(""user32.dll"")]
                static extern void keybd_event(byte bGAK, byte bScan, int dwFlags, int dwExtraInfo);
                [DllImport(""user32.dll"")]
                static extern short GetAsyncKeyState(int GAKey);
                if((GetAsyncKeyState(0x26) & 0x8000) != 0)//проверка на стрелочку вверх
                {
                    mouse_event(0x0001, 0, -10, 0, 0);// курсор вверх на 10 пикселей
                }
                
                if ((GetAsyncKeyState(0x28) & 0x8000) != 0)//проверка на стрелочку вниз
                {
                    mouse_event(0x0001, 0, 10, 0, 0);// курсор вниз на 10 пикселей
                }
                
                if ((GetAsyncKeyState(0x25) & 0x8000) != 0)//проверка на стрелочку налево
                {
                    mouse_event(0x0001, -10, 0, 0, 0);// курсор влево на 10 пикселей
                }
                
                if ((GetAsyncKeyState(0x27) & 0x8000) != 0)//проверка на стрелочку направо
                {
                    mouse_event(0x0001, 10, 0, 0, 0);// курсор вправо на 10 пикселей
                }
            ";

            var options = ScriptOptions.Default;
            options = options.WithImports("System", "System.Console");
            Script compiledScript = CSharpScript.Create(codeToCompile, options);

            Console.WriteLine("Executing code...");

            while (true) { var result = await compiledScript.RunAsync(); }// зацикливает код, всё что дальше - бессмысленно
            //Console.WriteLine(result.ReturnValue);
            Console.WriteLine("Code executed...");
            Console.ReadKey();
        }
    }
}

using Microsoft.CodeAnalysis;
using Microsoft.CodeAnalysis.CSharp;
using Microsoft.CodeAnalysis.CSharp.Scripting;
using Microsoft.CodeAnalysis.Scripting;
using System.Runtime.InteropServices;

namespace Testapp
{
    internal class Program
    {
        static async Task Main(string[] args)
        {

            var codeToCompile = @"
                [DllImport(""user32.dll"")]
                static extern void mouse_event(int dwFlags, int dx, int dy, int dwData, int dwExtraInfo);
                [DllImport(""user32.dll"")]
                static extern void keybd_event(byte bGAK, byte bScan, int dwFlags, int dwExtraInfo);
                [DllImport(""user32.dll"")]
                static extern short GetAsyncKeyState(int GAKey);
                if((GetAsyncKeyState(0x26) & 0x8000) != 0)//проверка на стрелочку вверх
                {
                    mouse_event(0x0001, 0, -10, 0, 0);// курсор вверх на 10 пикселей
                }
                
                if ((GetAsyncKeyState(0x28) & 0x8000) != 0)//проверка на стрелочку вниз
                {
                    mouse_event(0x0001, 0, 10, 0, 0);// курсор вниз на 10 пикселей
                }
                
                if ((GetAsyncKeyState(0x25) & 0x8000) != 0)//проверка на стрелочку налево
                {
                    mouse_event(0x0001, -10, 0, 0, 0);// курсор влево на 10 пикселей
                }
                
                if ((GetAsyncKeyState(0x27) & 0x8000) != 0)//проверка на стрелочку направо
                {
                    mouse_event(0x0001, 10, 0, 0, 0);// курсор вправо на 10 пикселей
                }
            ";

            var options = ScriptOptions.Default;
            options = options.WithImports("System", "System.Console");
            Script compiledScript = CSharpScript.Create(codeToCompile, options);

            Console.WriteLine("Executing code...");

            while (true) { var result = await compiledScript.RunAsync(); }// зацикливает код, всё что дальше - бессмысленно
            //Console.WriteLine(result.ReturnValue);
            Console.WriteLine("Code executed...");
            Console.ReadKey();
        }
    }
}

Jimmacle•8mo ago

it's the same error as if you forgot a using in normal C# code

das VainstaintischOP•8mo ago

you mean i should add using DllImportAttribute?'

Jimmacle•8mo ago

i don't use this scripting stuff but you have a line with what look like usings

das VainstaintischOP•8mo ago

i'll try i added this, and nothing was changed still this error

Jimmacle•8mo ago

options = options.WithImports("System", "System.Console"); here?

das VainstaintischOP•8mo ago

var result = await compiledScript.RunAsync(); here's error or what do you mean

Jimmacle•8mo ago

i mean those look like usings, so if it was me i would try adding the namespace to that list on the line i shared

das VainstaintischOP•8mo ago

Jimmacle•8mo ago

that's not a namespace that's just the type name

Jimmacle•8mo ago

https://learn.microsoft.com/en-us/dotnet/api/system.runtime.interopservices.dllimportattribute?view=net-8.0

DllImportAttribute Class (System.Runtime.InteropServices)

Indicates that the attributed method is exposed by an unmanaged dynamic-link library (DLL) as a static entry point.

Jimmacle•8mo ago

System.Runtime.InteropServices is the namespace just like you would need using System.Runtime.InteropServices; if this was a normal C# program

das VainstaintischOP•8mo ago

but i added this into code in the top.. or in variable with code, you mean, right? sorry if i'm being stupid, but i may not understand you i don't like this site in total because it always gives me not those im looking for

Buddy•8mo ago

What are you trying to make?

SleepWellPupper•8mo ago

I believe he meant for you to add System.Runtime.InteropServices to WithImports, and remove DllImportAttribute from it.

das VainstaintischOP•8mo ago

oh, now it works, thank you! but another one thing can i all these dll imports

[DllImport(""user32.dll"")]
static extern void mouse_event(int dwFlags, int dx, int dy, int dwData, int dwExtraInfo);
[DllImport(""user32.dll"")]
static extern void keybd_event(byte bGAK, byte bScan, int dwFlags, int dwExtraInfo);
[DllImport(""user32.dll"")]
static extern short GetAsyncKeyState(int GAKey);

[DllImport(""user32.dll"")]
static extern void mouse_event(int dwFlags, int dx, int dy, int dwData, int dwExtraInfo);
[DllImport(""user32.dll"")]
static extern void keybd_event(byte bGAK, byte bScan, int dwFlags, int dwExtraInfo);
[DllImport(""user32.dll"")]
static extern short GetAsyncKeyState(int GAKey);

put into this string?(WithImports) to make code more clean

Jimmacle•8mo ago

no, p/invoke has to be done with attributes

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✅ problems with executing code from variable