form1.cs

Visual C#2005程序设计教程

using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;

namespace WinApp5_1for
{
	/// <summary>
	/// Form1 的摘要说明。
	/// </summary>
	public class Form1 : System.Windows.Forms.Form
	{
		private System.Windows.Forms.Label lblSum;
		private System.Windows.Forms.Button button1;
		/// <summary>
		/// 必需的设计器变量。
		/// </summary>
		private System.ComponentModel.Container components = null;

		public Form1()
		{
			//
			// Windows 窗体设计器支持所必需的
			//
			InitializeComponent();

			//
			// TODO: 在 InitializeComponent 调用后添加任何构造函数代码
			//
		}

		/// <summary>
		/// 清理所有正在使用的资源。
		/// </summary>
		protected override void Dispose( bool disposing )
		{
			if( disposing )
			{
				if (components != null) 
				{
					components.Dispose();
				}
			}
			base.Dispose( disposing );
		}

		#region Windows 窗体设计器生成的代码
		/// <summary>
		/// 设计器支持所需的方法 - 不要使用代码编辑器修改
		/// 此方法的内容。
		/// </summary>
		private void InitializeComponent()
		{
            this.lblSum = new System.Windows.Forms.Label();
            this.button1 = new System.Windows.Forms.Button();
            this.SuspendLayout();
            // 
            // lblSum
            // 
            this.lblSum.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D;
            this.lblSum.Location = new System.Drawing.Point(50, 40);
            this.lblSum.Name = "lblSum";
            this.lblSum.Size = new System.Drawing.Size(192, 32);
            this.lblSum.TabIndex = 0;
            // 
            // button1
            // 
            this.button1.Location = new System.Drawing.Point(109, 104);
            this.button1.Name = "button1";
            this.button1.Size = new System.Drawing.Size(75, 32);
            this.button1.TabIndex = 1;
            this.button1.Text = "计算";
            this.button1.Click += new System.EventHandler(this.button1_Click);
            // 
            // Form1
            // 
            this.AutoScaleBaseSize = new System.Drawing.Size(8, 18);
            this.ClientSize = new System.Drawing.Size(292, 176);
            this.Controls.Add(this.button1);
            this.Controls.Add(this.lblSum);
            this.Name = "Form1";
            this.Text = "1到100的奇数和";
            this.Activated += new System.EventHandler(this.Form1_Activated);
            this.Load += new System.EventHandler(this.Form1_Load);
            this.ResumeLayout(false);

		}
		#endregion

		/// <summary>
		/// 应用程序的主入口点。
		/// </summary>
		[STAThread]
		static void Main() 
		{
			Application.Run(new Form1());
		}

		private void Form1_Load(object sender, System.EventArgs e)
		{
			//button1.f
		}

		private void Form1_Activated(object sender, System.EventArgs e)
		{
			this.Focus( );
		}

        private void button1_Click(object sender, EventArgs e)
        {
            int sum = 0;
            for (int i = 1; i <= 100; i = i + 2)
                sum += i;
            lblSum.Text = "1到100的奇数和为：" + sum;
        }
    }
}