How Can I Dynamically Invoke Private Methods Using Reflection in C#?

Accessing Private Methods Using C# Reflection

Reflection offers a powerful way to interact with private methods dynamically. However, the standard GetMethod() function alone won't access private members. This limitation is overcome by using the BindingFlags enumeration.

The Solution:

To retrieve private methods, modify your GetMethod() call to include the necessary BindingFlags. This example shows how:

<code class="language-csharp">MethodInfo dynMethod = this.GetType().GetMethod("Draw_" + itemType, 
    BindingFlags.NonPublic | BindingFlags.Instance);</code>

Here, BindingFlags.NonPublic ensures private methods are included in the search, and BindingFlags.Instance specifies that we're looking for instance methods (as opposed to static methods). With these flags, GetMethod() will successfully find the private method.

Subsequently, invoke the private method using the Invoke() method on the returned MethodInfo object, supplying the necessary parameters.

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