主窗体中的代码：
private delegate bool IncreaseProbarHandler(int nIncVal); //Declare a delegate to increase the progress bar value.
private IncreaseProbarHandler _IncHanler = null;
private List<Microsoft.Win32.RegistryKey> _RKeys = new List<Microsoft.Win32.RegistryKey>(); //Store the RegistryKey.
public MainForm() {
InitializeComponent();
}
private void MainForm_Load(object sender, EventArgs e) {
new Thread(ProThread).Start();
RecursiveRegedit(Microsoft.Win32.Registry.CurrentUser);
//RecursiveRegedit(Microsoft.Win32.Registry.LocalMachine);
MessageBox.Show("Done!");
}
//Recursive scan the registry.
void RecursiveRegedit(Microsoft.Win32.RegistryKey regBoot) {
if(regBoot == null) throw new ArgumentNullException("Null Item!");
string[] vals = regBoot.GetValueNames();
foreach(var v in vals) {
if(regBoot.GetValue(v) != null) {
string s = regBoot.GetValue(v).ToString();
if(s.StartsWith("C:", StringComparison.CurrentCultureIgnoreCase))
_RKeys.Add(regBoot); //Add to 'List'.
}
}
if(regBoot.SubKeyCount <= 0) //Exit.
return;
else { //Recursive.
string[] subs = regBoot.GetSubKeyNames();
foreach(string s in subs) {
try {//Try...catch the not accessible notes exception.
RecursiveRegedit(regBoot.OpenSubKey(s, Microsoft.Win32.RegistryKeyPermissionCheck.ReadWriteSubTree, System.Security.AccessControl.RegistryRights.FullControl));
}
catch {
}
}
}
regBoot.Close(); //Close.
}
/// <summary>
/// Show Progress bar form.
/// </summary>
void ShowProbar() {
ProgressBarForm proForm = new ProgressBarForm();
_IncHanler = new IncreaseProbarHandler(proForm.IncreaseProbarVal);
proForm.Show();
}
/// <summary>
/// Sub Thread to perform the progress bar.
/// </summary>
void ProThread() {
MethodInvoker mInvoker = new MethodInvoker(ShowProbar);
this.BeginInvoke(mInvoker);
Thread.Sleep(1000);
bool incResult = false; //The status each time when trying to increase the progress bar value.
do {
Thread.Sleep(5);
incResult = (bool)this.Invoke(this._IncHanler, new object[] { 2 });
} while(incResult);
}
进度条表单中的代码：
/// <summary>
/// Increase the value of the progress bar.
/// </summary>
/// <param name="incVal">The value to increase.</param>
/// <returns>True if increase successful,otherwise false.</returns>
public bool IncreaseProbarVal(int incVal) {
if(incVal <= 0) throw new ArgumentOutOfRangeException("Increase value can't the a negative.");
if(proBar.Value + incVal < proBar.Maximum) {
proBar.Value += incVal;
return true;
}
else {
proBar.Value = proBar.Maximum;
return false;
}
}
描述：我使用try catch语句递归读取主窗体中的注册表键值。我启动了一个新线程来执行进度条窗体。目前的问题是，运行应用程序时没有出现进度条窗体。它显示主窗体何时完成（但进度条的值保持不变，或者说不增加）。有人说我是否可以确定主要 jop 没有被阻塞并且有空闲时间来执行进度条。我对此感到困惑，我只是不使用状态“阻塞”或其他东西。所以那一定是其他的问题，或者你可以让我做一些事情并有一些理想吗？谢谢你的时间。