How Can I Dynamically Execute C# Code from an External Text File in a WPF Application?

Dynamic C# Code Execution in WPF from External Text Files

This guide demonstrates how to execute C# code dynamically within a WPF application by loading it from an external text file. This technique allows for runtime extension of application functionality.

1. Real-time Code Compilation:

The process begins by compiling the C# code residing in the external text file. This is achieved using the CSharpCodeProvider. The following example illustrates its use:

<code class="language-csharp">Dictionary<string, string> providerOptions = new Dictionary<string, string>
{
    {"CompilerVersion", "v3.5"}
};
CSharpCodeProvider provider = new CSharpCodeProvider(providerOptions);

CompilerParameters compilerParams = new CompilerParameters
{
    GenerateInMemory = true,
    GenerateExecutable = false
};

CompilerResults results = provider.CompileAssemblyFromSource(compilerParams, sourceCode);</code>

2. Instantiating the Compiled Class:

After successful compilation, an instance of the class containing the target method is created from the compiled assembly:

<code class="language-csharp">object compiledClassInstance = results.CompiledAssembly.CreateInstance("Namespace.ClassName");</code>

3. Method Invocation:

Finally, the desired method is invoked on the newly created instance:

<code class="language-csharp">MethodInfo methodInfo = compiledClassInstance.GetType().GetMethod("MethodName");
methodInfo.Invoke(compiledClassInstance, null);</code>

By following these steps, you can seamlessly integrate dynamic C# code execution from external text files into your WPF application, providing a powerful mechanism for runtime extensibility. Remember to handle potential exceptions during compilation and execution for robust error handling.

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