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How to Correctly Invoke Methods with Parameters Using Reflection?

Jan 18, 2025 am 02:38 AM

How to Correctly Invoke Methods with Parameters Using Reflection?

Reflection: Call a method with parameters

Using reflection to call methods with parameters can be complicated. You may encounter "object does not match target type" errors, especially when trying to pass an object to a method with a different type signature.

To solve this problem, the key is to understand: when using reflection to call a method with parameters, the first parameter is always an instance of the class that calls the method. In your code, you mistakenly used "methodInfo" as the first parameter instead of "classInstance".

The correct code snippet should be:

<code>result = methodInfo.Invoke(classInstance, parametersArray);</code>
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By making this change, you ensure that the first parameter is an instance of the class, allowing the method to be called correctly.

In summary, when using reflection to call a method with parameters, remember to use a class instance as the first parameter, followed by an array of parameters. This correction should eliminate the "Object does not match target type" error and enable successful invocation of the method.

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