QuickStart C#                                  

by Amy Roberge and John Linehan

Step-by-step instructions for learning to program in C#

About

Step 1. Download & install .NET Framework SDK 1.1

• Go to the Microsoft website (http://www.microsoft.com/downloads/details.aspx?familyid=9b3a2ca6-3647-4070-9f41-a333c6b9181d&displaylang=en
• Double-click to run the installer and then accept all the defaults during installation.

Step 2. Download and install the latest version of SharpDevelop

• Run the installation
• Launch SharpDevelop

Step 3. Write a "hello world" program

• Start SharpDevelop (double-click on the shortcut)
• File->New->Combine
• Select “C#” category and new Console Application template and click Create
• Name the project "Hello World"
• SharpDevelop recognizes the Hello World name and automatically produces the code.
• If you were to code it yourself, the code should look as follows:li>

  using System;
  
  		public class HelloWorld
  		{
  			public static void Main()
  			{
  				Console.WriteLine("HELLO WORLD");
  			}
  		} 

• Save the program

Step 4. Run the "hello world" program

• Click Build
• Select Build Combine
• View the console at the bottom for progress
• Once the file is compiled, select Debug and then click Run
• Watch the command prompt window open and display the output
• Congratulations!

Step 5. Make it Visual

• Modify your code to match this:

using System;
using System.Drawing;
using System.Windows.Forms;

namespace helloworldvisual
{
	/// 

	/// Description of MainForm.
	/// 
	public class MainForm : System.Windows.Forms.Form
	{
		private System.Windows.Forms.Button helloVisible;
		private System.Windows.Forms.Button quitButton;
		private System.Windows.Forms.Button helloHide;
		private System.Windows.Forms.Label helloLabel;
		public MainForm()
		{
			InitializeComponent();
		}
		
		[STAThread]
		public static void Main(string[] args)
		{
			Application.Run(new MainForm());
		}
		
		#region Windows Forms Designer generated code
		/// 

		/// 
		private void InitializeComponent() {
			this.helloLabel = new System.Windows.Forms.Label();
			this.helloHide = new System.Windows.Forms.Button();
			this.quitButton = new System.Windows.Forms.Button();
			this.helloVisible = new System.Windows.Forms.Button();
			this.SuspendLayout();

			this.helloLabel.Font = new System.Drawing.Font("Tahoma", 15.75F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
			this.helloLabel.Location = new System.Drawing.Point(16, 40);
			this.helloLabel.Name = "helloLabel";
			this.helloLabel.Size = new System.Drawing.Size(216, 56);
			this.helloLabel.TabIndex = 1;
			this.helloLabel.Text = "Hello World";
			this.helloLabel.TextAlign = System.Drawing.ContentAlignment.MiddleCenter;
			this.helloLabel.Visible = false;
			this.helloLabel.Click += new System.EventHandler(this.Label1Click);

			this.helloHide.Enabled = false;
			this.helloHide.Font = new System.Drawing.Font("Tahoma", 9.75F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
			this.helloHide.Location = new System.Drawing.Point(136, 136);
			this.helloHide.Name = "helloHide";
			this.helloHide.Size = new System.Drawing.Size(88, 40);
			this.helloHide.TabIndex = 2;
			this.helloHide.Text = "Hide";
			this.helloHide.Click += new System.EventHandler(this.HideClick);

			this.quitButton.Font = new System.Drawing.Font("Tahoma", 12F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
			this.quitButton.Location = new System.Drawing.Point(24, 184);
			this.quitButton.Name = "quitButton";
			this.quitButton.Size = new System.Drawing.Size(200, 48);
			this.quitButton.TabIndex = 3;
			this.quitButton.Text = "Exit";
			this.quitButton.Click += new System.EventHandler(this.QuitButtonClick);

			this.helloVisible.Font = new System.Drawing.Font("Tahoma", 9.75F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
			this.helloVisible.Location = new System.Drawing.Point(24, 136);
			this.helloVisible.Name = "helloVisible";
			this.helloVisible.Size = new System.Drawing.Size(88, 40);
			this.helloVisible.TabIndex = 0;
			this.helloVisible.Text = "Show";
			this.helloVisible.Click += new System.EventHandler(this.HelloVisibleClick);

			this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
			this.ClientSize = new System.Drawing.Size(248, 240);
			this.Controls.Add(this.quitButton);
			this.Controls.Add(this.helloHide);
			this.Controls.Add(this.helloLabel);
			this.Controls.Add(this.helloVisible);
			this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedSingle;
			this.MaximizeBox = false;
			this.Name = "MainForm";
			this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
			this.Text = "Hello World Graphics";
			this.Load += new System.EventHandler(this.MainFormLoad);
			this.ResumeLayout(false);
		}

		void Label1Click(object sender, System.EventArgs e)
		{
		}
		void HelloVisibleClick(object sender, System.EventArgs e)
		{
			helloLabel.Visible = true;
			helloVisible.Enabled = false;
			helloHide.Enabled = true;
		}
		
		void HideClick(object sender, System.EventArgs e)
		{
			helloLabel.Visible = false;
			helloHide.Enabled = false;
			helloVisible.Enabled = true;
		}
		
		void QuitButtonClick(object sender, System.EventArgs e)
		{
			MainForm.ActiveForm.Close();
		}
		
		void MainFormLoad(object sender, System.EventArgs e)
		{
			
		}
		
	}
}

Step 6. Learn More About C#

• Visit the QuickStart Languages Web site.
• Visit the C# Station.
• Visit the Microsoft Developer Center.
• Find Helpful C#  QuickStart Presentation                                           

  Download and view the QuickStart C# PowerPoint Presentation.

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