How Can I Invoke Generic Methods with Dynamically Resolved Type Variables in C#?

Using a dynamic type of type variable C#generication method

When using the generic method, you often encounter the type of parameters when compiling, but dynamically determine the type parameter during runtime. Reflex provides a powerful solution to cope with this challenge.

The solution of genetically genetically generatedhodhod

To use the type stored in Mytype variables to call the generic method genericmedhod

, you can use the following methods:

1. Methodinfo using reflection method:

   <code class="language-csharp">MethodInfo method = typeof(Sample).GetMethod(nameof(Sample.GenericMethod));</code>

2. Provide type parameters to construct generic methods:

   <code class="language-csharp">MethodInfo generic = method.MakeGenericMethod(myType);</code>

3. Call the constructor's generic method:

   <code class="language-csharp">generic.Invoke(this, null);</code>

Static method STATICMETHOD solution

To call the static generic method StaticMethod

, please follow similar steps:

1. Methodinfo to get static generic methods:

   <code class="language-csharp">MethodInfo method = typeof(Sample).GetMethod(nameof(Sample.StaticMethod));</code>

2. Use type parameter constructing generic method:

   <code class="language-csharp">MethodInfo generic = method.MakeGenericMethod(myType);</code>

3. Call the generic method of the constructor. Because it is a static method, the null is passed as the first parameter:

   <code class="language-csharp">generic.Invoke(null, null);</code>

C# 4 and Dynamic keywords brought by simplified

Although the reflection provides a powerful solution for calling the generic method, it may involve quite a lot of model code. However, starting from C# 4, you can use Dynamic keywords to simplify this process. If the type inference is available, using Dynamic can significantly reduce the required code.

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