C # User Defined Exception Handling for Erroe from Dll get Exception was not handled by user code
I am working with a dynamic C # application that links all classes to the main application from the Dll files that I create separately, in these files, when I link my DLL file dynamically, the error handlers want to reset errors over the connection, since it was here, here what am i trying to do
I have a dll file with this code and a class on it
class clsGlobles {
public object dlststus = false; // dtabase file status
public clsGlobles()
{
try
{
if (dlststus == true)
{
}
else
{
throw new Exception("Some important files are missing - Please re-install the application"); //throw this as a error and stop running the program
}
}
catch (Exception ex)
{
throw ex; //throw exception to the upper throw catch exception where i like to hand it
//Evan i use throw; instead of throw ex; i get the same result
}
}
and then i link this dll file using a dynamic method which works well but when i try to pass the user definition error i get the error as no exception and show the class inside the dll file i dont want to handle any exceptions in my classes in dll file, I just need to pass them to the next step and process them in the program in which I use them.
here is the code i am using it
private void frmMain_Load(object sender, EventArgs e)
{
string tf = "";
tf = Application.StartupPath + "\\clsGlobles.dll";
try
{
Assembly asm = Assembly.LoadFrom(tf);
AppDomain.CurrentDomain.Load(asm.GetName());
Type type = asm.GetTypes().First(t => t.Name == "clsGlobles");
glbls = Activator.CreateInstance(type);
}
catch (Exception ex)
{
MessageBox.Show(ex.Message.ToString()); // the error i throw in inside the dll class should come here and i could handle it from here
}
}
and when I close the above error box and continue executing, it also shows something like this
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I think I am getting the answer here when I link my dll in the application by reference and then use it as an object inside my application by a using
directive it works fine and allows me to use an exception throw
for the application statement throw catch
, but when it is added to the application dynamically it expects. that I will handle my exceptions inside the dll and solve that ever problem, it won't let me throw exceptions using throw new exception("err")
into the application
Evan a no error handling for this throw new exception
is ok, but he won't allow throw
in the catch block
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