不错的东东

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Diagnostics;
using System.IO;

namespace AppleInPicture
{
    public partial class frmMain : Form
    {
        public frmMain()
        {
            InitializeComponent();
        }

        private void btnSelectPicture_Click(object sender, EventArgs e)
        {
            OpenFileDialog ofd = new OpenFileDialog();
            ofd.Filter = "(*.jpg)|*.jpg|(*.gif)|*.gif";
            if (ofd.ShowDialog() == DialogResult.OK)
            {
                this.tbPicture.Text = ofd.FileName;
            }
        }

        private void btnSelectApple_Click(object sender, EventArgs e)
        {
            OpenFileDialog ofd = new OpenFileDialog();
            ofd.Filter = "Apple file|*.rar;*.zip;*.7z";
            if (ofd.ShowDialog() == DialogResult.OK)
            {
                this.tbApple.Text = ofd.FileName;
            }
        }

        private void btnMake_Click(object sender, EventArgs e)
        {
            if (this.tbApple.Text.Length == 0 || this.tbPicture.Text.Length == 0)
            {
                return;
            }

            SaveFileDialog sfd = new SaveFileDialog();
            sfd.Filter = "Image file|*.jpg";
            if (sfd.ShowDialog() == DialogResult.OK)
            {
                Process p = new Process();
                p.StartInfo.FileName = "cmd.exe";
                p.StartInfo.UseShellExecute = false;
                p.StartInfo.RedirectStandardInput = true;
                p.StartInfo.RedirectStandardOutput = true;
                p.StartInfo.RedirectStandardError = true;
                p.StartInfo.CreateNoWindow = true;
                p.Start();
                p.StandardInput.WriteLine(this.makeCommand(this.tbPicture.Text, this.tbApple.Text, sfd.FileName));
                p.StandardInput.WriteLine("exit");
                p.WaitForExit();

                if (File.Exists(sfd.FileName))
                {
                    MessageBox.Show("製作完成！", "提示");
                }
                else
                {
                    MessageBox.Show("製作失敗！", "提示");
                }
            }
        }

        private string makeCommand(string f1, string f2, string f3)
        {
            return string.Format("copy /b {0}+{1} {2}", f1, f2, f3);
        }
    }
}