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

namespace diy21
{
    /// <summary>
    /// Summary description for Form.
    /// </summary>
    public partial class Form1 : System.Windows.Forms.Form
    {
        private System.Windows.Forms.TextBox txt_input;
        private System.Windows.Forms.Button btn_ok;
        /// <summary>
        /// Required designer variable.
        /// </summary>
        private System.ComponentModel.Container components = null;

        public Form1()
        {
            //
            //Required for Windows Form Designer sypport
            //
            InitializeComponent();
            //
            //TODO:Add any constructor code after InitializeComponent call
            //
        }
        /// <summary>
        /// Clean up any resources being used.
        /// </summary>
        protected override void Dispose(bool disposing)
        {
            if (disposing)
            {
                if (components != null)
                {
                    components.Dispose();
                }
            }
            base.Dispose(disposing);
        }

        #region Windows Form Designer generated code
        /// <summary>
        /// Required method for Designer support - do not modify
        /// the contents of this method with the code editor.
        /// </summary>
        private void InitializeComponent()
        {
            this.txt_input = new System.Windows.Forms.TextBox();
            this.btn_ok = new System.Windows.Forms.Button();
            this.SuspendLayout();
            //
            //txt_input
            //
            this.txt_input.Location = new System.Drawing.Point(88, 64);
            this.txt_input.Name="txt_input";
            this.txt_input.TabIndex=0;
            this.txt_input.Text = "朋友，您好！";
            //
            //btn_ok
            //
            this.btn_ok.Location = new System.Drawing.Point(104, 128);
            this.btn_ok.Name = "btn_ok";
            this.btn_ok.TabIndex = 1;
            this.btn_ok.Text = "我想说";
            this.btn_ok.Click += new System.EventHandler(this.btn_ok_Click);
            //
            //Form1
            //
            this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
            this.ClientSize = new System.Drawing.Size(292, 273);
            this.Controls = new AddRange(new System.Windows.Forms.Control[] { 
            this.btn_ok,
                this.txt_input
            });
            this.Name = "Form1";
            this.Text = "我的第一个Windows应用程序";
            this.ResumeLayout(false);
        }
        #endregion
        /// <summary>
        /// The main entry point the application.
        /// </summary>
        [STAThread]
        static void Main()
        {
            Application.Run(new Form1());
        }
        private void btn_ok_Click(object sender, System.EventArgs e)
        {
            MessageBox.Show(txt_input.Text, "Hello");
        }
    }
}




就是这个程序啊，很简单的入门程序，报错啊、不知道怎么修改了、大家快救救我啊