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

namespace 空白文件生成器
{
    public partial class Form1 : Form
    {
        long size = 0;
        public Form1()
        {
            InitializeComponent();
            label7.Text = trackBar1.Value.ToString();
            numericUpDown1.Increment = trackBar1.Value;
        }

        private void 关于ToolStripMenuItem_Click(object sender, EventArgs e)
        {
            Form form = new AboutBox1();
            form.ShowDialog();
        }

        private void trackBar1_ValueChanged(object sender, EventArgs e)
        {
            label7.Text = trackBar1.Value.ToString();
            numericUpDown1.Increment = trackBar1.Value;
        }

        private void button1_Click(object sender, EventArgs e)
        {
            if (folderBrowserDialog1.ShowDialog() == DialogResult.OK)
            {
                textBox1.Text = folderBrowserDialog1.SelectedPath;
            }
        }

        private void button2_Click(object sender, EventArgs e)
        {
            label555:
            if (Directory.Exists(textBox1.Text))
            {
                if (label2.Text != "")
                {
                    if (comboBox1.Text != "")
                    {
                        if (numericUpDown1.Value > 0)
                        {
                            if (comboBox2.Text != "")
                            {
                                string path=textBox1.Text+@"\"+textBox2.Text+"."+comboBox1.Text;
                                if (comboBox2.Text == "B")
                                {
                                    size = (int)numericUpDown1.Value;
                                }
                                if (comboBox2.Text == "KB")
                                {
                                    size = (int)numericUpDown1.Value*1024;
                                }
                                if (comboBox2.Text == "MB")
                                {
                                    size = (int)numericUpDown1.Value * 1024 * 1024;
                                }
                                if (comboBox2.Text == "GB")
                                {
                                    size = (long)numericUpDown1.Value * 1024 * 1024 * 1024;
                                }
                                if (MessageBox.Show("文件地址："+path+ "\r\n文件大小：" + size.ToString(), "确认信息", MessageBoxButtons.OKCancel, MessageBoxIcon.Question) == DialogResult.OK)
                                {
                                    Process process = new Process();
                                    process.StartInfo.UseShellExecute = false;   //是否使用操作系统shell启动 
                                    process.StartInfo.CreateNoWindow = true;   //是否在新窗口中启动该进程的值 (不显示程序窗口)
                                    process.StartInfo.RedirectStandardInput = true;  // 接受来自调用程序的输入信息 
                                    process.StartInfo.RedirectStandardOutput = true;  // 由调用程序获取输出信息
                                    process.StartInfo.RedirectStandardError = true;  //重定向标准错误输出
                                    process.StartInfo.FileName = "cmd.exe";
                                    process.Start();                         // 启动程序
                                    process.StandardInput.WriteLine("fsutil file createnew " + path + " " + size); //向cmd窗口发送输入信息
                                    process.StandardInput.AutoFlush = true;
                                    // 前面一个命令不管是否执行成功都执行后面(exit)命令，如果不执行exit命令，后面调用ReadToEnd()方法会假死
                                    process.StandardInput.WriteLine("exit");
                                    StreamReader reader = process.StandardOutput;//获取exe处理之后的输出信息
                                    string curLine = reader.ReadLine(); //获取错误信息到error
                                    int line = 0;
                                    while (!reader.EndOfStream)
                                    {
                                        if (!string.IsNullOrEmpty(curLine))
                                        {
                                            line++;
                                            if (line == 4)
                                            {
                                                MessageBox.Show(curLine, "生成结果", MessageBoxButtons.OK, MessageBoxIcon.Information);
                                            }
                                        }
                                        curLine = reader.ReadLine();
                                    }
                                    reader.Close(); //close进程
                                    process.WaitForExit();  //等待程序执行完退出进程
                                    process.Close();
                                }
                            }
                            else
                            {
                                MessageBox.Show("文件大小单位无效，请重新选择文件单位", "生成失败", MessageBoxButtons.OK, MessageBoxIcon.Error);
                            }
                        }
                        else
                        {
                            MessageBox.Show("文件大小无效，请重新输入文件大小", "生成失败", MessageBoxButtons.OK, MessageBoxIcon.Error);
                        }
                    }
                    else
                    {
                        MessageBox.Show("文件扩展名无效，请重新输入或选择扩展名", "生成失败", MessageBoxButtons.OK, MessageBoxIcon.Error);
                    }
                }
                else
                {
                    MessageBox.Show("文件名无效，请重新输入文件名", "生成失败", MessageBoxButtons.OK, MessageBoxIcon.Error);
                }
            }
            else
            {
                if (textBox1.Text != "")
                {
                    DirectoryInfo directoryInfo = new DirectoryInfo(textBox1.Text);
                    directoryInfo.Create();
                    goto label555;
                }
                else
                {
                    MessageBox.Show("位置无效，请重新输入路径或浏览文件夹", "生成失败", MessageBoxButtons.OK, MessageBoxIcon.Error);
                }
            }
        }
    }
}