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Figure 3-14 shows the before version toward the left and the after version toward the right, overlapping the before version.
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3: Creating Your First Applications
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Figure 3-15 Command prompt window with the expected result and a message indicating a paused execution
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As you probably realize by now, the effect of the new command is to display the Press any key to continue... message and pause the execution after the last instruction executes. Press any key to close the command prompt window and return to the IDE. When you re done, you can close the project by clicking File, Close Solution. You ll be prompted to save or discard your changes. Click Save, and then if the name and location are fine, click Save again in the Save Project dialog box.
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Creating a Windows Application
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You just built a console application. The next step is to develop the same application but as a Windows application. What you will develop is a real and fully functional Window application, but it won t do much; you ll create a fully functional Windows application in 5.
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Microsoft Visual C# 2008 Express Edition: Build a Program Now!
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TO BUILD A WINDOWS APPLICATION
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1. When creating the console application, you saw the New Project dialog box. Open it again by clicking File, New Project. 2. This time, select Windows Forms Application from the Templates section, and type MyFirstWindowsApplication. Make sure your screen looks like the one in Figure 3-16, and then click OK.
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Figure 3-16 Creating a Windows application by using the New Project dialog box
You ll immediately see that the result of this operation is quite different for the Windows application process than it was for the console application process. You should see the Windows Forms Designer, as displayed in Figure 3-17.
3: Creating Your First Applications
Figure 3-17 IDE with the Windows Forms Designer and an empty form
3. On the left side of the IDE, move your mouse pointer over the Toolbox to open it. Click the plus (+) sign next to Common Controls. You ll see a list of form controls that are common in a Windows application. 4. Drag the button control to the designer surface. Your form should look like the one in Figure 3-18. You now have a full and valid Windows application without having written a single line of code. The application doesn t do anything very useful at this point, but it works! You can
Microsoft Visual C# 2008 Express Edition: Build a Program Now!
easily verify this by running the application. Just hit F5 to see for yourself. This is part of the magic of using the Visual Studio IDE environment for programming instead of using a text editor such as Notepad. Visual Studio writes a lot of code for you, and in 5, we ll look at some of the activity that s taking place behind the scenes to make it appear like magic. When you have finished, click the Close button on the form to return to the IDE. Double-click the button on the designer surface. You ll get the familiar source code window but with different content this time. For now, type or copy the code under static void Main(string [ ] args) from the console application you created previously to the button1_Click method, as shown in Figure 3-19. (You ll learn more about this method and the whole process behind the double-click in 4, Creating Your Own Web Browser in Less Than Five Minutes. )
Figure 3-18 Windows Forms Designer surface with a button control
Figure 3-19 Button-click method with the code from our previous example
3: Creating Your First Applications
Keywords and Links to More Information
If you want to read more about some topics covered in this chapter, simply create a search query by pressing F1, and then search for the following keywords: declaring variables and string concatenation. The videos from MSDN are another good source of information. These videos were specifically created to cover the Visual C# 2005 Express Edition product, but they are for the most part still applicable to creating your first application using the 2008 version. You can find the video for Lesson 1 that covers getting started with Visual C# Express at the following location: http://msdn2. microsoft.com/en-us/beginner/ bb308735.aspx.
5. In the source code, find the words Console.WriteLine, and replace them with the words MessageBox.Show. Then build and execute the application by hitting F5. 6. When the form opens, click the button, and you ll see the result of your application: a message box with the same string you saw in the console application. It should look like Figure 3-20. Click OK in the message box, and then quit the program by clicking the Close button on the main form.
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