form1.cs

原代码详细说明是关于c++方面的希望可以帮助大家使用

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

namespace Exam1_Exception
{
	/// <summary>
	/// Form1 的摘要说明。
	/// </summary>
	public class Form1 : System.Windows.Forms.Form
	{
		private System.Windows.Forms.Label label1;
		private System.Windows.Forms.TextBox textBox1;
		private System.Windows.Forms.Button button1;
		private System.Windows.Forms.Label label2;
		private System.Windows.Forms.Label label3;
		/// <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.label1 = new System.Windows.Forms.Label();
			this.textBox1 = new System.Windows.Forms.TextBox();
			this.button1 = new System.Windows.Forms.Button();
			this.label2 = new System.Windows.Forms.Label();
			this.label3 = new System.Windows.Forms.Label();
			this.SuspendLayout();
			// 
			// label1
			// 
			this.label1.Location = new System.Drawing.Point(21, 13);
			this.label1.Name = "label1";
			this.label1.Size = new System.Drawing.Size(136, 25);
			this.label1.TabIndex = 0;
			this.label1.Text = "请输入一个摄氏温度：";
			// 
			// textBox1
			// 
			this.textBox1.Location = new System.Drawing.Point(165, 8);
			this.textBox1.Name = "textBox1";
			this.textBox1.Size = new System.Drawing.Size(106, 21);
			this.textBox1.TabIndex = 1;
			this.textBox1.Text = "";
			// 
			// button1
			// 
			this.button1.Location = new System.Drawing.Point(291, 6);
			this.button1.Name = "button1";
			this.button1.Size = new System.Drawing.Size(50, 25);
			this.button1.TabIndex = 2;
			this.button1.Text = "转换";
			this.button1.Click += new System.EventHandler(this.button1_Click);
			// 
			// label2
			// 
			this.label2.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D;
			this.label2.Location = new System.Drawing.Point(112, 43);
			this.label2.Name = "label2";
			this.label2.Size = new System.Drawing.Size(181, 25);
			this.label2.TabIndex = 3;
			// 
			// label3
			// 
			this.label3.Location = new System.Drawing.Point(29, 49);
			this.label3.Name = "label3";
			this.label3.Size = new System.Drawing.Size(81, 21);
			this.label3.TabIndex = 4;
			this.label3.Text = "华氏温度为：";
			// 
			// Form1
			// 
			this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
			this.ClientSize = new System.Drawing.Size(358, 82);
			this.Controls.Add(this.label3);
			this.Controls.Add(this.label2);
			this.Controls.Add(this.button1);
			this.Controls.Add(this.textBox1);
			this.Controls.Add(this.label1);
			this.Name = "Form1";
			this.Text = "温度转换";
			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 button1_Click(object sender, System.EventArgs e)
		{
			float x;
			double y;
			try
			{
				x=Single.Parse(textBox1.Text);
				y=getValue(x);
				label2.Text=""+y;
			}
			catch(MyException ee){label2.Text=ee.Message;}
			catch(FormatException ee){label2.Text=ee.Message;}
		}
		private double getValue(float x)
		{
			double y;
			if(x<-273.15f)throw new MyException();
            y=x*1.8f+32;
			return y;
		}
	}
	class MyException: ApplicationException
	{
		public MyException():base("温度值超出范围")
		{
		}
	}
}