How Can I Correctly Invoke Methods with Parameters Using Reflection?

Use reflection to call methods with parameters

The reflection mechanism allows developers to access the internal structure of an assembly at runtime. A common use case is calling a method with parameters. However, some users encounter problems when trying this task.

One such problem is the "object does not match target type" error that occurs when calling a method with parameters. The code provided illustrates the problem. While calling a method without parameters works, trying to call a method with a string parameter triggers an exception.

To resolve this error, it is important to remember that methodInfo represents the method itself, while classInstance represents a new instance of the class in which the method is located. When calling a method with parameters, the correct syntax is:

<code class="language-csharp">result = methodInfo.Invoke(classInstance, parametersArray);</code>

In this line of code, classInstance is passed as the first argument, indicating the instance on which the method should be called. parametersArray Contains the actual parameters passed to the method.

By making this simple adjustment, developers can successfully call methods with parameters using reflection.

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