如何获取CS-Script编译时的英文警告与错误信息

Got it, let's sort out how to switch those German error and warning messages to English when using CS-Script for runtime compilation. Here are two reliable approaches:

1. Set the VSLANG Environment Variable #

The .NET compiler (csc.exe/Roslyn) uses the VSLANG environment variable to determine the language for output messages. Setting it to 1033 (the locale ID for English - US) will force English output.

You can set this either globally for your entire application or right before calling the CS-Script compilation:

// Set the environment variable before compiling
Environment.SetEnvironmentVariable("VSLANG", "1033");

// Your existing compilation code
var eval = CSScript.Evaluator;
var assembly = eval.CompileCode(code);

// Check for errors/warnings
if (CSScript.CompilingHistory.Any()) {
    foreach (var err in CSScript.CompilingHistory.Last().Value.Result.Errors.Cast<CompilerError>()) {
        this.AddValidationResult(err, codeFile);
    }
}

Note: If you need to revert back to the original language later, save the previous value of VSLANG and restore it after compilation.

2. Pass Compiler Options Directly to CS-Script #

CS-Script lets you pass custom compiler flags to the underlying .NET compiler. You can specify the culture directly via compiler options:

var eval = CSScript.Evaluator;
// Add the culture flag to force English output
eval.CompilerOptions = "/culture:en-US";

var assembly = eval.CompileCode(code);

// Your existing error checking code here...

This approach targets just the CS-Script evaluator instance, so it won't affect other parts of your application that might rely on the original locale.

Why This Works #

CS-Script relies on the official .NET compiler (either csc.exe or Roslyn) under the hood. Both compilers respect the VSLANG environment variable and the /culture compiler option to determine the language of diagnostic messages. By setting either of these, you override the system's default locale for compiler output.

内容的提问来源于stack exchange，提问作者BennoDual