How Can I Retrieve All Classes from a Specific Namespace in C#?

Retrieving All Classes Within a Namespace in C#

To obtain all classes within a specific namespace in C#, utilize the following technique:

Obtain all types within the target assembly using Assembly.GetTypes().

Filter the obtained types based on their namespace. Utilize Where with String.Equals to match the namespace of each type to the desired namespace.

Convert the resulting type collection to an array using ToArray().

Example:

using System.Reflection;

private Type[] GetTypesInNamespace(Assembly assembly, string nameSpace)
{
    return
      assembly.GetTypes()
              .Where(t => String.Equals(t.Namespace, nameSpace, StringComparison.Ordinal))
              .ToArray();
}

To utilize this method, invoke it with the target assembly and namespace:

Type[] typelist = GetTypesInNamespace(Assembly.GetExecutingAssembly(), "MyNamespace");

For versions prior to .Net 2.0:

Assembly myAssembly = typeof(Namespace.someClass).GetTypeInfo().Assembly;
Type[] typelist = GetTypesInNamespace(myAssembly, "Namespace");

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