MySql.Data.dll is a signed dll and changing it with mono would result in an
unsigned dll.
+ check your GAC, probably if you have MySQL driver installed in may have
put MySql.Data.dll in a GAC, so .NET would try to use version from GAC.
On Monday, February 29, 2016 at 6:53:37 PM UTC+2, Gray wrote:
>
> HI,
>
> I am Injecting code into the MySql.Data.dll with Mono.cecil,but it doesn't
> work.It seemed to be working - if I decompile the assemblies with ILSpy
> they show the injected code is there.
> I just want to add Console.WriteLine("run method Open") into Method Opne();
>
> static void Main(string[] args)
> {
> AssemblyDefinition asm =
> AssemblyDefinition.ReadAssembly("F:\\MySql.Data.dll");
> foreach (TypeDefinition type in asm.MainModule.Types)
> {
> //
> if (type.Name.Equals("MySqlConnection"))
> {
> foreach (MethodDefinition method in type.Methods)
> {
> //
> if (method.Name == "Open")
> {
>
> var ilProcessor = method.Body.GetILProcessor();
>
> var firstInstruction =
> ilProcessor.Body.Instructions[0];
> Instruction insStr = ilProcessor.Create(OpCodes.Ldstr, "run method Ope");
>
> ilProcessor.InsertBefore(firstInstruction,
> insStr);
> MethodReference refernce =
> asm.MainModule.ImportReference(typeof(Console).GetMethod("WriteLine",
> new Type[] { typeof(string) }));
> Instruction insCall = ilProcessor.Create(OpCodes.Call,
> refernce);
> ilProcessor.InsertAfter(insStr,insCall);
> }
> }//end for MethodDefinition
> }
> }//end for TypeDefinition
> asm.Write("F:\\MySql.Data.dll");
> }
>
> I write a test code to run the mehod "Open" ,but it doesn't print "run
> method Open" even "Console.WriteLine("run method Open");" has been in mehod
> "Open".
> Can you please help me to resolve the error.
>
> Thanks,
> Gray
>
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