Executing a method which is named via a config file-CodePudding

In short: I have a method name provided via a JSON configuration file. I'd like to call a method using this provided name. The method (with a matching name) will exist in the backend. What's the best way of going about this?

I am not quite sure what I should be searching for as an example.

To detail: I am working with a legacy application, hence the VB.NET. I am building a single PDF file from multiple PDF sources. Most of these are as is, I simply read the configuration and grab the relevant files and the job is done. However some require processing, I'd like the configuration file to pass in a method name to be called that will perform extra processing on the PDF, whatever that may be.

As there can be a lot of PDF files that can vary, I cannot simply use a property such as "PostProcessing: true".

Any ideas?

CodePudding user response：

You could use reflection to reflect method names back and check them against the name passed from the property in the config file.

Like so

    Type magicType = Type.GetType("MagicClass");
    MethodInfo magicMethod = magicType.GetMethod("ItsMagic");
    object magicValue = magicMethod.Invoke(magicClassObject, new object[]{100});

That would work.. but to be honest, I'd go with a case statement as you'll be hardcoding the method names anyway (because they are code), and it'll be strongly typed (less chance of typos and errors).