This print for content only-size & color not accurate 7" X 9-1/4" / casebound / malloy

// Add this!

using System.Windows.Forms;

class TestApp

{

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B U I L D I N G   C #  A P P L I C AT I O N S

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8849CH02.qxd  9/24/07  10:50 AM  Page 38

---

static void Main()

{

Console.WriteLine("Testing! 1, 2, 3");

// Add this!

MessageBox.Show("Hello...");

}

}

Notice you are importing the System.Windows.Forms namespace via the C# using keyword

(introduced in Chapter 1). Recall that when you explicitly list the namespaces used within a given

*.cs file, you avoid the need to make use of fully qualified names of a type (which can lead to hand

cramps).

At the command line, you must inform csc.exe which assembly contains the namespaces you

are using. Given that you have made use of the System.Windows.Forms.MessageBox class, you must

specify the System.Windows.Forms.dll assembly using the /reference flag (which can be abbrevi-

ated to /r):

csc /r:System.Windows.Forms.dll TestApp.cs

If you now rerun your application, you should see what appears in Figure 2-3 in addition to the

console output.

Figure 2-3.

Your first Windows Forms application