代码：
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.Diagnostics;
using System.IO;
using DannyGeneral;
namespace StopwatchTimer
{
public partial class Form1 : Form
{
private static readonly Stopwatch watch = new Stopwatch();
private long diff = 0, previousTicks = 0, ticksDisplayed = 0;
private OptionsFile optionsfile = new OptionsFile(Path.GetDirectoryName(Application.LocalUserAppDataPath) + "\\Settings.txt");
private string result;
public Form1()
{
InitializeComponent();
richTextBox1.TabStop = false;
richTextBox1.ReadOnly = true;
richTextBox1.BackColor = Color.White;
richTextBox1.Cursor = Cursors.Arrow;
richTextBox1.Enter += RichTextBox1_Enter;
trackBarHours.Value = Convert.ToInt32(optionsfile.GetKey("trackbarhours"));
trackBarMinutes.Value = Convert.ToInt32(optionsfile.GetKey("trackbarminutes"));
trackBarSeconds.Value = Convert.ToInt32(optionsfile.GetKey("trackbarseconds"));
richTextBox1.Text = optionsfile.GetKey("result");
string radiobutton1 = optionsfile.GetKey("radiobutton1");
bool b;
bool.TryParse(radiobutton1.Trim(), out b);
radioButton1.Checked = b;
if (ticksDisplayed > 0 && b == false)
radioButton2.Checked = true;
if(trackBarHours.Value == 0 && trackBarMinutes.Value == 0 && trackBarSeconds.Value == 0)
{
btnPause.Enabled = false;
btnReset.Enabled = false;
}
else
{
btnPause.Enabled = false;
btnReset.Enabled = true;
}
//UpdateTime();
}
private void RichTextBox1_Enter(object sender, EventArgs e)
{
btnStart.Focus();
}
private void UpdateTime()
{
if (ticksDisplayed > 0)
btnReset.Enabled = true;
richTextBox1.Text = GetTimeString(watch.Elapsed);
optionsfile.SetKey("result", result.ToString());
}
private string GetTimeString(TimeSpan elapsed)
{
result = string.Empty;
//calculate difference in ticks
diff = elapsed.Ticks - previousTicks;
if (radioButton1.Checked == true)
{ //counting up
ticksDisplayed += diff;
}
else
{ //counting down
ticksDisplayed -= diff;
}
if (ticksDisplayed < 0)
{
ticksDisplayed = 0;
}
//Make ticksDisplayed to regular time to display in richtextbox
TimeSpan ctimeSpan = new TimeSpan(ticksDisplayed);
result = string.Format("{0:00}:{1:00}:{2:00}.{3:000}",
ctimeSpan.Hours,
ctimeSpan.Minutes,
ctimeSpan.Seconds,
ctimeSpan.Milliseconds);
previousTicks = elapsed.Ticks;
return result;
}
private void Form1_Load(object sender, EventArgs e)
{
}
private void btnStart_Click(object sender, EventArgs e)
{
if (btnStart.Text == "START")
{
watch.Reset();
//Here
TimeSpan ctimeSpan = new TimeSpan(0, trackBarHours.Value, trackBarMinutes.Value, trackBarSeconds.Value, 0);
diff = 0;
previousTicks = 0;
ticksDisplayed = ctimeSpan.Ticks;
watch.Start();
btnStart.Text = "STOP";
btnPause.Enabled = true;
btnReset.Enabled = true;
timer1.Enabled = true;
}
else
{
watch.Stop();
btnStart.Text = "START";
btnPause.Text = "PAUSE";
btnPause.Enabled = false;
if (trackBarHours.Value == 0 && trackBarMinutes.Value == 0 && trackBarSeconds.Value == 0 && ticksDisplayed == 0)
{
btnReset.Enabled = false;
}
else
{
btnReset.Enabled = true;
}
if (ticksDisplayed > 0)
btnReset.Enabled = true;
timer1.Enabled = false;
}
}
private void btnReset_Click(object sender, EventArgs e)
{
watch.Reset();
if (btnStart.Text == "STOP")
watch.Start();
diff = 0;
previousTicks = 0;
ticksDisplayed = 0;
trackBarHours.Value = 0;
trackBarMinutes.Value = 0;
trackBarSeconds.Value = 0;
if (trackBarHours.Value == 0 && trackBarMinutes.Value == 0 && trackBarSeconds.Value == 0)
{
btnReset.Enabled = false;
}
else
{
btnReset.Enabled = true;
}
UpdateTime();
}
private void trackBarHours_Scroll(object sender, EventArgs e)
{
//get ticksDisplayed as TimeSpan
TimeSpan ctimeSpan = new TimeSpan(ticksDisplayed);
//change only the hour
TimeSpan htimeSpan = new TimeSpan(ctimeSpan.Days, trackBarHours.Value, ctimeSpan.Minutes, ctimeSpan.Seconds, ctimeSpan.Milliseconds);
//set it to ticksDisplayed and update.
ticksDisplayed = htimeSpan.Ticks;
if (trackBarSeconds.Value == 0 && trackBarHours.Value == 0 && trackBarMinutes.Value == 0)
btnStart.Enabled = false;
if (trackBarHours.Value > 0)
{
btnStart.Enabled = true;
btnReset.Enabled = true;
}
optionsfile.SetKey("trackbarhours", trackBarHours.Value.ToString());
UpdateTime();
}
private void trackBarMinutes_Scroll(object sender, EventArgs e)
{
TimeSpan ctimeSpan = new TimeSpan(ticksDisplayed);
TimeSpan mtimeSpan = new TimeSpan(ctimeSpan.Days, ctimeSpan.Hours, trackBarMinutes.Value, ctimeSpan.Seconds, ctimeSpan.Milliseconds);
ticksDisplayed = mtimeSpan.Ticks;
if (trackBarSeconds.Value == 0 && trackBarHours.Value == 0 && trackBarMinutes.Value == 0)
btnStart.Enabled = false;
if (trackBarMinutes.Value > 0)
{
btnStart.Enabled = true;
btnReset.Enabled = true;
}
optionsfile.SetKey("trackbarminutes", trackBarMinutes.Value.ToString());
UpdateTime();
}
private void trackBarSeconds_Scroll(object sender, EventArgs e)
{
TimeSpan ctimeSpan = new TimeSpan(ticksDisplayed);
TimeSpan stimeSpan = new TimeSpan(ctimeSpan.Days, ctimeSpan.Hours, ctimeSpan.Minutes, trackBarSeconds.Value, ctimeSpan.Milliseconds);
ticksDisplayed = stimeSpan.Ticks;
if (trackBarSeconds.Value == 0 && trackBarHours.Value == 0 && trackBarMinutes.Value == 0)
btnStart.Enabled = false;
if (trackBarSeconds.Value > 0)
{
btnStart.Enabled = true;
btnReset.Enabled = true;
}
optionsfile.SetKey("trackbarseconds", trackBarSeconds.Value.ToString());
UpdateTime();
}
private void radioButton1_CheckedChanged(object sender, EventArgs e)
{
optionsfile.SetKey("radiobutton1", radioButton1.Checked.ToString());
}
private void btnPause_Click(object sender, EventArgs e)
{
if (btnStart.Text == "STOP")
{
if (btnPause.Text == "PAUSE")
{
btnPause.Text = "CONTINUE";
watch.Stop();
timer1.Enabled = false;
}
else
{
btnPause.Text = "PAUSE";
watch.Start();
timer1.Enabled = true;
}
}
}
private void timer1_Tick(object sender, EventArgs e)
{
UpdateTime();
}
}
}
例如，现在在运行应用程序并从保存的文本文件中加载值时，trackBars的值如下所示：小时= 1分钟= 10秒= 50
如果现在我将更改一个trackBars值，则richTextBox中的其他值将更改为00，其他两个trackBars将保持相同的值，但是riachTextBox中的两个trackBars的值将更改为00。
例如，我第一次在richTextBox中运行应用程序，时间是：01：10：50.000 trackBars值是相同的1 10 50现在我将小时数的小时TrackBar的值01更改为05两个trackBar将保持在值10和50，但在richTextBox中，将10和50重置为00:00。
不知道为什么。
这是用于保存/加载设置的类t =
/*----------------------------------------------------------------
* Module Name : OptionsFile
* Description : Saves and retrievs application options
* Author : Danny
* Date : 10/02/2010
* Revision : 1.00
* --------------------------------------------------------------*/
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;
using System.Net;
using System.IO;
using System.Configuration;
/*
* Introduction :
*
* This module helps in saving application options
*
*
* Typical file could look like this:
* user_color=Red
* time_left=30
*
*
*
*
*
* */
namespace DannyGeneral
{
class OptionsFile
{
/*----------------------------------------
* P R I V A T E V A R I A B L E S
* ---------------------------------------*/
/*---------------------------------
* P U B L I C M E T H O D S
* -------------------------------*/
string path_exe;
string temp_settings_file;
string temp_settings_dir;
string Options_File;
StreamWriter sw;
StreamReader sr;
/*----------------------------------------------------------
* Function : OptionsFile
* Description : Constructor
* Parameters : file_name is the name of the file to use
* Return : none
* --------------------------------------------------------*/
///<summary>
///<para>Enter a path with a filename</para>
///</summary>
public OptionsFile(string settingsFileAndPath)
{
if (!File.Exists(settingsFileAndPath))
{
if (!Directory.Exists(Path.GetDirectoryName(settingsFileAndPath)))
{
Directory.CreateDirectory(Path.GetDirectoryName(settingsFileAndPath));
}
File.Create(settingsFileAndPath).Close();
}
path_exe = Path.GetDirectoryName(Application.LocalUserAppDataPath);
Options_File = settingsFileAndPath;
}
/*----------------------------------------------------------
* Function : GetKey
* Description : gets the value of the key.
* Parameters : key
* Return : value of the key if key exist, null if not exist
* --------------------------------------------------------*/
public string GetKey(string key)
{
// string value_of_each_key;
string key_of_each_line;
string line;
int index;
string key_value;
key_value = null;
sr = new StreamReader(Options_File);
while (null != (line = sr.ReadLine()))
{
index = line.IndexOf("=");
// value_of_each_key = line.Substring(index+1);
if (index >= 1)
{
key_of_each_line = line.Substring(0, index);
if (key_of_each_line == key)
{
key_value = line.Substring(key.Length + 1);
}
}
else
{
}
}
sr.Close();
return key_value;
}
/*----------------------------------------------------------
* Function : SetKey
* Description : sets a value to the specified key
* Parameters : key and a value
* Return : none
* --------------------------------------------------------*/
public void SetKey(string key , string value)
{
bool key_was_found_inside_the_loop;
string value_of_each_key;
string key_of_each_line ;
string line;
int index;
key_was_found_inside_the_loop = false;
temp_settings_file = "\\temp_settings_file.txt";
temp_settings_dir = path_exe + @"\temp_settings";
if (!Directory.Exists(temp_settings_dir))
{
Directory.CreateDirectory(temp_settings_dir);
}
sw = new StreamWriter(temp_settings_dir+temp_settings_file);
sr = new StreamReader(Options_File);
while (null != (line = sr.ReadLine()))
{
index = line.IndexOf("=");
key_of_each_line = line.Substring(0, index);
value_of_each_key = line.Substring( index + 1);
// key_value = line.Substring(0,value.Length);
if (key_of_each_line == key)
{
sw.WriteLine(key + "=" + value);
key_was_found_inside_the_loop = true;
}
else
{
sw.WriteLine(key_of_each_line+"="+value_of_each_key);
}
}
if (!key_was_found_inside_the_loop)
{
sw.WriteLine(key + "=" + value);
}
sr.Close();
sw.Close();
File.Delete(Options_File);
File.Move(temp_settings_dir + temp_settings_file, Options_File);
return;
}
public List<float> GetListFloatKey(string keys)
{
List<float> result = new List<float>();
string s = GetKey(keys);
if (s != null)
{
string[] items = s.Split(new char[] { ',' });
float f;
foreach (string item in items)
{
if (float.TryParse(item, out f))
result.Add(f);
}
return result;
}
else
{
return result;
}
}
public void SetListFloatKey(string key, List<float> Values)
{
StringBuilder sb = new StringBuilder();
foreach (float value in Values)
{
sb.AppendFormat(",{0}", value);
}
if (Values.Count == 0)
{
SetKey(key, "");
}
else
{
SetKey(key, sb.ToString().Substring(1));
}
}
public List<int> GetListIntKey(string keys)
{
/*List<int> t = new List<int>();
t = (GetListFloatKey(keys).ConvertAll(x => (int)x));
return t;*/
List<int> result = new List<int>();
string s = GetKey(keys);
if (s != null)
{
string[] items = s.Split(new char[] { ',' });
int f;
foreach (string item in items)
{
if (int.TryParse(item, out f))
result.Add(f);
}
return result;
}
else
{
return result;
}
;
}
public void SetListIntKey(string key, List<int> Values)
{
StringBuilder sb = new StringBuilder();
foreach (int value in Values)
{
sb.AppendFormat(",{0}", value);
}
if (Values.Count == 0)
{
SetKey(key, "");
}
else
{
SetKey(key, sb.ToString().Substring(1));
}
}
/*---------------------------------
* P R I V A T E M E T H O D S
* -------------------------------*/
}
}
答案 0 :(得分：1)
您所做的是将richtextbox中的“时间”设置为文本，而您没有更新ticksDisplayed变量：
richTextBox1.Text = optionsfile.GetKey("result");
时钟运行时，它将读取ticksDisplayed变量，它会加上或减去diff并显示结果。此时您的ticksDisplayed为零！然后，将小时跟踪栏更改为5，ticksDisplayed变为05:00:00（以小时为单位）。您还需要更新ticksDisplayed：
richTextBox1.Text = optionsfile.GetKey("result");
//You need to update ticksDisplayed also!
TimeSpan ctimeSpan = new TimeSpan(0, trackBarHours.Value, trackBarMinutes.Value, trackBarSeconds.Value, 0);
ticksDisplayed = ctimeSpan.Ticks;
....
....
如果您按下了start button，那本来可以正常工作（因为它设置了ticksDisplayed值），但是您可能没有设置正确的ticksDisplayed值就启动了计时器和时钟。
要将跟踪栏更改为跟随时间，只需在GetTimeString()中添加以下代码即可：
private string GetTimeString(TimeSpan elapsed)
{
result = string.Empty;
//calculate difference in ticks
diff = elapsed.Ticks - previousTicks;
if (radioButton1.Checked == true)
{ //counting up
ticksDisplayed += diff;
}
else
{ //counting down
ticksDisplayed -= diff;
}
if (ticksDisplayed < 0)
{
ticksDisplayed = 0;
}
//Make ticksDisplayed to regular time to display in richtextbox
TimeSpan ctimeSpan = new TimeSpan(ticksDisplayed);
//HERE
if( trackBarHours.Value != ctimeSpan.Hours ){ trackBarHours.Value = ctimeSpan.Hours; }
if( trackBarMinutes.Value != ctimeSpan.Minutes){ trackBarMinutes.Value = ctimeSpan.Minutes; }
if( trackBarSeconds.Value != ctimeSpan.Seconds){ trackBarSeconds.Value = ctimeSpan.Seconds; }
result = string.Format("{0:00}:{1:00}:{2:00}.{3:000}",
ctimeSpan.Hours,
ctimeSpan.Minutes,
ctimeSpan.Seconds,
ctimeSpan.Milliseconds);
previousTicks = elapsed.Ticks;
return result;
}