C# 4 and .NET 4

438 ❘ ChaPTer 18 Assemblies
With Visual Studio 2010, you can configure these
attributes with the project properties, Application settings,
and Assembly Information, as you can see in Figure 18-6.
Creating and loading assemblies
dynamically
During development time, you add a reference to an assembly
so that it gets included with the assembly references, and the
types of the assembly are available to the compiler. During
runtime the referenced assembly is loaded as soon as a type
of the assembly is instantiated or a method of the type is
used. Instead of using this automatic behavior, you can
also load assemblies programmatically. To load assemblies
programmatically, you can use the class Assembly with the
static method Load(). This method is overloaded where you
can pass the name of the assembly using AssemblyName, the
name of the assembly, or a byte array.
figure 18-6
It is also possible to create an assembly on the fly, as shown with the next example. This sample
demonstrates how C# code can be entered in a text box, a new assembly is dynamically created by starting
the C# compiler, and the compiled code is invoked.
To compile C# code dynamically, you can use the class CSharpCodeProvider from the namespace
Microsoft.CSharp. Using this class, you can compile code and generate assemblies from a DOM tree, from
a file, and from source code.
The UI of the application is created by using WPF. You can see the design view of the UI in Figure 18-7. The
window is made up of a TextBox to enter C# code, a Button, and a TextBlock WPF control that spans all
columns of the last row to display the result, as shown in Figure 18-7.
figure 18-7
To dynamically compile and run C# code, the class CodeDriver defines the method CompileAndRun().
This method compiles the code from the text box and starts the generated method.
using System;
using System.CodeDom.Compiler;
using System.IO;
using System.Reflection;
using System.Text;
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