请问,为何我的进度条不能显示?(读取注册表).
Code in the main form:
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);
}
/// <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;
}
}
