Execute or compile runtime c# code on textbox after changes event - "PlatformNotSupportedException" - runtime

Question

I am wondering to provide an option in my application to users to be able to customize buttons in ASP.NET CORE with Blazor.
I mean, C# code can be stored in database, and compiled/executed in runtime.
How can I "provide" an object from razor to be manipulated in this "code stored in the database" and after that, make those changes in runtime, after code been executed?
Please share your ideas.
I already tried some things, like this:
using Blazored.Toast.Services;
using Microsoft.AspNetCore.Components;
using Microsoft.CSharp;using Newtonsoft.Json;
using System;
using System.CodeDom.Compiler;
using System.Collections.Generic;
using System.Linq;
using System.Reflection;
using System.Threading.Tasks;
namespace Projeto.Web.Pages.Components {
public class McwEditModel : CustomComponentBase
{
[Inject]
public IToastService ToastService { get; set; }
#region Parameters
[Parameter]
public string nome { get; set; }
#endregion
public void OnTextChanged(string newValue)
{
string source =
#"public class SomeClass {
public int OnTextChanged (string newValue) {
if (!string.IsNullOrEmpty(newValue)) {
ToastService.ShowWarning(newValue);
}
}
} ";
var compParms = new CompilerParameters
{
GenerateExecutable = false,
GenerateInMemory = true
};
var csProvider = new CSharpCodeProvider();
CompilerResults compilerResults =
csProvider.CompileAssemblyFromSource(compParms, source);
object typeInstance =
compilerResults.CompiledAssembly.CreateInstance("SomeClass");
MethodInfo mi = typeInstance.GetType().GetMethod("OnTextChanged");
int methodOutput =
(int)mi.Invoke(typeInstance, new object[] { newValue });
InvokeAsync(StateHasChanged);
}
}}
The problem is that does not work, particularly I am getting the error "System.PlatformNotSupportedException: 'Operation is not supported on this platform.'" on line
" CompilerResults compilerResults = csProvider.CompileAssemblyFromSource(compParms, source); "
I am using Blazor .NET Core.
Is there any chance or way to achieve what I want?

Answer 1

I solved it using using Microsoft.CodeAnalysis package.
I needed to create a
public class Globals
{
[Inject]
public IToastService ToastService { get; set; }
public string newValue { get; set; }
public dynamic objeto { get; set; }
}
and inside my method I did:
public void OnTextChanged(string newValue){
Aql aql = new Aql { EaqcCodigo = "1", EaqcDescricao = "AQL" };
var globals = new Globals { ToastService = ToastService, newValue = newValue, objeto= aql };
CSharpScript.RunAsync("ToastService.ShowWarning(newValue + \"- desc:\" + objeto.EaqcDescricao + \"- cod:\" + objeto.EaqcCodigo);", ScriptOptions.Default.WithReferences("Microsoft.CSharp"), globals).Wait();
}
with this, now I can pass a dynamic object and also make any codes in a string field on database and retrieve this wherever I want, to customize a lot of things, ie: change of fields (in a custom generic and dynamic component)