using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Linq;

using System.Text;

using System.Windows.Forms;

namespace ExtractTime

{

    public partial class Form1 : Form

    {

        public Form1()

        {

            InitializeComponent();

        }

        private void button1_Click(object sender, EventArgs e)

        {

            //--

            string[] strlist = {"年","月","日" };

            string strs = "日期:    2018年07月31日"; //xx年xx月xx日

            strs = textBox1.Text;

            var  test =  ff(strs);

            string[] temp = test.Split(new char[] { '#'}, StringSplitOptions.RemoveEmptyEntries);

            strs = strs.Replace(" ",""); //日期:2018年07月31日

            var cut = "";bool Mouthbl = false;

            //查询第一个年字所在位置

            for (int i=;i<strs.Length;i++)

            {

                cut = strs.Substring(i,); //截取一个字符

                if (cut.Contains("年")) //当前字符是年字

                {

                    //查找月字

                    for (int ii = i; ii < strs.Length; ii++)

                    {

                        cut = strs.Substring(ii, ); //截取一个字符

                        if (cut.Contains("月")) //当前字符是月字

                        {

                            //包含月字

                            Mouthbl = true;

                            var x = i;

                            var y = ii;

                            if (y-x<=&& y - x > ) //年月,a年a月,aa年aa月

                            {

                                //截取字符串

                                if (i>=)

                                {

                                    var year =  strs.Substring(i-,); //截取4个

                                    //验证该字符串是否是数字(略)

                                    var mouth = strs.Substring(ii - , ).Replace("年",""); //截取月

                                    var day = "";

                                    //截取日

                                    if (strs.Length-(ii+)>=) //xx月xx日

                                    {

                                      day = strs.Substring(ii,).Replace("月","");

                                    }

                                    textBox2.Text = year + mouth + day;

                                    break;

                                }

                            }

                        }

                    }

                    if (Mouthbl)

                    {

                        break; //包含月

                    }

                }

            }

        }

        private void button2_Click(object sender, EventArgs e)

        {

            // Newmode.CompileDate = Convert.ToDateTime(CompileDate); //时间 字符串转时间

            textBox1.Text = "";

            textBox2.Text = "";

        }

        public string ff(string strs)

        {

            string result = "";

            strs = strs.Replace(" ", ""); //日期:2018年07月31日

            var cut = ""; bool Mouthbl = false;

            //查询第一个年字所在位置

            for (int i = ; i < strs.Length; i++)

            {

                cut = strs.Substring(i, ); //截取一个字符

                if (cut.Contains("年")) //当前字符是年字

                {

                    //查找月字

                    for (int ii = i; ii < strs.Length; ii++)

                    {

                        cut = strs.Substring(ii, ); //截取一个字符

                        if (cut.Contains("月")) //当前字符是月字

                        {

                            //包含月字

                            Mouthbl = true;

                            var x = i;

                            var y = ii;

                            if (y - x <=  && y - x > ) //年月,a年a月,aa年aa月

                            {

                                //截取字符串

                                if (i >= )

                                {

                                    var year = strs.Substring(i - , ); //截取4个

                                    //验证该字符串是否是数字(略)

                                    var mouth = strs.Substring(ii - , ).Replace("年", ""); //截取月

                                    if (mouth.Length == ) //位数为1补0

                                    {

                                        mouth = "" + mouth;

                                    }

                                    var day = "";

                                    //截取日

                                    if (strs.Length - (ii + ) >= ) //xx月xx日

                                    {

                                        day = strs.Substring(ii, ).Replace("月", "");

                                        if (day.Length==)////位数为1补0

                                        {

                                            day = "" + day;

                                        }

                                    }

                                    result = year+"#" + mouth + "#" + day;

                                    break;

                                }

                            }

                        }

                    }

                    if (Mouthbl)

                    {

                        break; //包含月

                    }

                }

            }

            return result;

        }

    }

}