Call a Function or Subroutine with Its String Name Using the Invoke Method

Call a Function or Subroutine with Its String Name Using the Invoke Method

VB6 introduced the CallByName function which allows you to call a function or subroutine using the subroutine or function name stored as a string value. While this function still works in ASP.NET, you do have another option: you can use the Invoke method of the MethodInfo class. This class is a member of the System.Reflection namespace and it provides access to a method’s metadata. Consider the following subroutine:

Public Sub CallMe(ByVal arg1 As String, ByVal _ arg2 As String)'do somethingEnd Sub

To call this subroutine using the Invoke method, you can use code similar to the following:

Dim SubName As String = "CallMe"Dim arguments() As String = _{"Hello ", "world."}Dim PageType As Type = Page.GetType()Dim MyMethod As System.Reflection.MethodInfo = _PageType.GetMethod(SubName)MyMethod.Invoke(Page, arguments)

The GetMethod method obtains information about the function and the Invoke method calls it using the argument list. This is an excellent tool to help you streamline your code?especially if you have several different functions, but you won’t know which one to call until runtime.

For example, suppose you have a new, edit, and delete routine for updating database records. Instead of using an

Share the Post:
Heading photo, Metadata.

What is Metadata?

What is metadata? Well, It’s an odd concept to wrap your head around. Metadata is essentially the secondary layer of data that tracks details about the “regular” data. The regular

XDR solutions

The Benefits of Using XDR Solutions

Cybercriminals constantly adapt their strategies, developing newer, more powerful, and intelligent ways to attack your network. Since security professionals must innovate as well, more conventional endpoint detection solutions have evolved

AI is revolutionizing fraud detection

How AI is Revolutionizing Fraud Detection

Artificial intelligence – commonly known as AI – means a form of technology with multiple uses. As a result, it has become extremely valuable to a number of businesses across

AI innovation

Companies Leading AI Innovation in 2023

Artificial intelligence (AI) has been transforming industries and revolutionizing business operations. AI’s potential to enhance efficiency and productivity has become crucial to many businesses. As we move into 2023, several

data fivetran pricing

Fivetran Pricing Explained

One of the biggest trends of the 21st century is the massive surge in analytics. Analytics is the process of utilizing data to drive future decision-making. With so much of

kubernetes logging

Kubernetes Logging: What You Need to Know

Kubernetes from Google is one of the most popular open-source and free container management solutions made to make managing and deploying applications easier. It has a solid architecture that makes