using System;
using System.Collections.Generic;
using System.WinForms;
using System.Windows.Forms;

namespace WindowsApplication4
{
   static class Program
    {
      
        public class Form1 :Form
        {
              public Form1()
              {
                //this.SetSize(180, 90);
                this.Size = new System.Drawing.Size(180, 190);

                //this.BorderStyle = FormBorderStyle.FixedDialog;
                this.Text = " +C －> +F / +F －> +C ";
                this.StartPosition = FormStartPosition.CenterScreen;
               // this.HelpButton = false;
                this.MaximizeBox = false;
               public class TempConverter : System.Form
                {
                     Label lTempFah = new Label();
                     Label lTempCel = new Label();
                    TextBox tTempFah = new TextBox();
                    TextBox tTempCel = new TextBox();
                    Button bnCtoF = new Button();
                     Button bnFtoC = new Button();
                 public TempConverter()
                  {
                    this.SetSize(180,90);
                    this.BorderStyle = FormBorderStyle.FixedDialog;
                    this.Text =" +C －> +F / +F －> +C ";
                    this.StartPosition = FormStartPosition.CenterScreen;
                    this.HelpButton = false;
                    this.MaximizeBox = false;
                    tTempCel.TabIndex = 0;
                    tTempCel.SetSize(50,25);
                    tTempCel.SetLocation(13,5);
                    lTempCel.TabStop = false;
                    lTempCel.Text = "+C ";
                    lTempCel.SetSize(25, 25);
                    lTempCel.SetLocation(65,5);
                    tTempFah.TabIndex = 1;
                    tTempFah.SetSize(50,25);
                    tTempFah.SetLocation(90,5);
                    lTempFah.TabStop = false;
                    lTempFah.Text = "+F ";
                    lTempFah.SetSize(25,25);
                    lTempFah.SetLocation(142,5);
                    bnCtoF.TabIndex = 2;
                    bnCtoF.Text = "+C to +F ";
                    bnCtoF.SetSize(70,25);
                    bnCtoF.SetLocation(13,35);
                    bnFtoC.TabIndex = 3;
                    bnFtoC.Text = "+F to +C ";
                    bnFtoC.SetSize(70,25);
                    bnFtoC.SetLocation(90,35);
                    this.Controls. Add(tTempCel);
                    this.Controls. Add(lTempCel);
                    this.Controls. Add(tTempFah);
                    this.Controls. Add(lTempFah);
                    this.Controls. Add(bnCtoF);
                    this.Controls. Add(bnFtoC);
                   }
                 }
                }
            public static void Main()
            {
                Application.Run(new Form1());
            }
       }
   }
}

错误信息是：1 应输入}
             2 应输入类型、命名空间定义或文件尾

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