Question

我认为这是一个权限问题，但我不知道如何解决它，我收到以下异常：

System.IO.FileLoadException: LoadFrom(), LoadFile(), Load(byte[]) and LoadModule() have been disabled by the host.
at System.Reflection.RuntimeAssembly.nLoadImage(Byte[] rawAssembly, Byte[] rawSymbolStore, Evidence evidence, StackCrawlMark& stackMark, Boolean fIntrospection, SecurityContextSource securityContextSource)
at System.Reflection.Assembly.Load(Byte[] rawAssembly, Byte[] rawSymbolStore, Evidence securityEvidence)
at Microsoft.CSharp.CSharpCodeGenerator.FromFileBatch(CompilerParameters options, String[] fileNames)
at Microsoft.CSharp.CSharpCodeGenerator.FromDomBatch(CompilerParameters options, CodeCompileUnit[] ea)
at Microsoft.CSharp.CSharpCodeGenerator.System.CodeDom.Compiler.ICodeCompiler.CompileAssemblyFromDomBatch(CompilerParameters options, CodeCompileUnit[] ea)
at System.CodeDom.Compiler.CodeDomProvider.CompileAssemblyFromDom(CompilerParameters options, CodeCompileUnit[] compilationUnits)

执行以下代码时：

var engine = this.CreateRazorEngine();
var typeName = "view_" + Guid.NewGuid().ToString("N");
var results = engine.GenerateCode(new StringReader(content), typeName, "", typeName + ".cs");
if (!results.Success) { this.Fail("Unable to compile view '" + this.filename + "'."); return; }
using (var codeProvider = new CSharpCodeProvider()) {
    var tempPath = Path.GetTempPath();
    var outputFile = Path.Combine(tempPath, Guid.NewGuid().ToString("N") + ".dll");
    var compilerParameter = new CompilerParameters(this.references, outputFile, true) { GenerateInMemory = true, CompilerOptions = "/optimize", TempFiles = new TempFileCollection(tempPath) };
    var compilerResults = codeProvider.CompileAssemblyFromDom(compilerParameter, results.GeneratedCode);
    if (compilerResults.Errors.HasErrors) {
        var compileExceptionMessage = string.Join(Environment.NewLine + Environment.NewLine, compilerResults.Errors.OfType<CompilerError>().Where(ce => !ce.IsWarning).Select(e => e.FileName + ":" + Environment.NewLine + e.ErrorText).ToArray());
        this.Fail(compileExceptionMessage);
        return;
    }
    this.view = Activator.CreateInstance(compilerResults.CompiledAssembly.GetType(typeName, true, false), true) as ViewBase;                    
}

为清楚起见，CreateRazorEngine代码为：

private RazorTemplateEngine CreateRazorEngine() {
    var host = new RazorEngineHost(new CSharpRazorCodeLanguage()) { DefaultBaseClass = typeof(ViewBase).FullName };
    foreach(var name in this.usings) { host.NamespaceImports.Add(name); }
    return new RazorTemplateEngine(host);
}

有人可以让我知道代码和我需要在哪里提高安全级别，以便创建的程序集具有足够的权限来加载已经给出的引用。

使用CompileAssemblyFromDom时出现FileLoadException

0 个答案: