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PODebugging a generated .NET assembly from within the application that generated it
 

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  1. PODebugging a generated .NET assembly from within the application that generated it
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    <p>The question in short: How can I debug the code generated during a debugging session on the generating program? (see code below)</p> <p>I am facing the following issue: I would like to debug into dynamically generated/compiled code from the application that generates it. I provided an oversimplified example to clarify it. This example doesn't need debugging! My real app generates many more lines and code that really justify debugging, believe me :-) I would like to know if there is a way to debug or put a breakpoint at <code>HelloWorld</code>. Stepping into the InvokeMethod call doesn't work. Maybe a solution involves code modification at the call sites to the generated assembly.</p> <p>I had a look at many questions already (<a href="https://stackoverflow.com/questions/1295807/debug-dynamically-loaded-assembly-in-visual-studio-net">Debug dynamically loaded assembly in Visual Studio .NET</a> for example) but none was helpful in solving the problem (if solvable at all?)</p> <p>I took code from <a href="http://www.csharpfriends.com/Articles/getArticle.aspx?articleID=118" rel="nofollow noreferrer">http://www.csharpfriends.com/Articles/getArticle.aspx?articleID=118</a> as a base and fixed the obsoleted calls. Beside this I generated the assembly on-the-fly in memory and the calls are working well. I generated explicitly an assembly with Debug information, what gives me hope: why would there be the option if debugging is not possible?</p> <pre><code>using System; using System.Text; using System.IO; using Microsoft.CSharp; using System.CodeDom.Compiler; using System.Reflection; namespace DynamicAssembly { class CreateCompileExecute { [STAThread] static void Main(string[] args) { // Creates a text file to store the new class StringBuilder builder = new StringBuilder(); builder.AppendLine("using System;"); builder.AppendLine("namespace CSharpFriendsRocks"); builder.AppendLine("{"); builder.AppendLine("class CSharpFriends"); builder.AppendLine("{"); builder.AppendLine("public CSharpFriends() {" + " Console.WriteLine(\"The CSharpFriends type is constructed\"); }"); builder.AppendLine("public void HelloWorld() {" + " Console.WriteLine(\"Hello World - CSharpFriends.Com Rocks.\"); }"); builder.AppendLine("}"); builder.AppendLine("}"); // Create the C# compiler CSharpCodeProvider csCompiler = new CSharpCodeProvider(); // input params for the compiler CompilerParameters compilerParams = new CompilerParameters(); compilerParams.OutputAssembly = "CSharpFriends.dll"; compilerParams.GenerateInMemory = true; compilerParams.IncludeDebugInformation = true; compilerParams.ReferencedAssemblies.Add("system.dll"); compilerParams.GenerateExecutable = false; // generate the DLL // Run the compiler and build the assembly CompilerResults results = csCompiler.CompileAssemblyFromSource( compilerParams, builder.ToString()); // Load the generated assembly into the ApplicationDomain Assembly asm = results.CompiledAssembly; Type t = asm.GetType("CSharpFriendsRocks.CSharpFriends"); // BindingFlags enumeration specifies flags that control binding and // the way in which the search for members and types is conducted by reflection. // The following specifies the Access Control of the bound type BindingFlags bflags = BindingFlags.DeclaredOnly | BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance; // Construct an instance of the type and invoke the member method Object obj = t.InvokeMember("HelloWorld", bflags | BindingFlags.CreateInstance, null, null, null); // Call the method t.InvokeMember("HelloWorld", bflags | BindingFlags.InvokeMethod, null, obj, null); } } } </code></pre>
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    1. COHave you seen http://stackoverflow.com/questions/321203/how-do-i-debug-il-code-generated-at-runtime-using-reflection-emit ?
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    2. COI want to really debug into it not visualize the IL code or did I miss something?
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    3. COOr did you mean the answer therein that states it is not possible?
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