私のプロジェクトFormでは、独自のスレッドに表示されるタスクダイアログのようなものがあります...このようにして、メインスレッドがロックアップしても、タスクダイアログProgressBarとステータスを更新できます。私が抱えている問題は、ProgressBarが更新されていないことです。ステータス テキストは更新されますが、閉まるProgressBar直前まで は動きません。FormはFormメイン スレッドで開かれています。これが私のコードです：
public partial class TaskForm : Form
{
/// <summary>
/// Gets or Sets whether the task is cancelable
/// </summary>
protected bool Cancelable = true;
/// <summary>
/// Returns whether the Task form is already open and running
/// </summary>
/// <returns></returns>
public static bool IsOpen
{
get { return (Instance != null && !Instance.IsDisposed); }
}
/// <summary>
/// The task dialog's instance
/// </summary>
private static TaskForm Instance;
/// <summary>
/// Private constructor... Use the Show() method rather
/// </summary>
private TaskForm()
{
InitializeComponent();
}
/// <summary>
/// Open and displays the task form.
/// </summary>
/// <param name="Parent">The calling form, so the task form can be centered</param>
public static void Show(Form Parent, string WindowTitle, string InstructionText, string SubMessage, bool Cancelable, ProgressBarStyle Style)
{
// Make sure we dont have an already active form
if (Instance != null && !Instance.IsDisposed)
throw new Exception("Task Form is already being displayed!");
// Create new instance
Instance = new TaskForm();
Instance.Text = WindowTitle;
Instance.labelInstructionText.Text = InstructionText;
Instance.labelContent.Text = SubMessage;
Instance.Cancelable = Cancelable;
Instance.progressBar.Style = Style;
// Hide Cancel
if (!Cancelable)
{
Instance.panelButton.Hide();
Instance.Padding = new Padding(0, 0, 0, 15);
Instance.BackColor = Color.White;
}
// Set window position to center parent
double H = Parent.Location.Y + (Parent.Height / 2) - (Instance.Height / 2);
double W = Parent.Location.X + (Parent.Width / 2) - (Instance.Width / 2);
Instance.Location = new Point((int)Math.Round(W, 0), (int)Math.Round(H, 0));
// Run form in a new thread
Thread thread = new Thread(new ThreadStart(ShowForm));
thread.IsBackground = true;
thread.SetApartmentState(ApartmentState.STA);
thread.Start();
Thread.Sleep(100); // Wait for Run to work
}
/// <summary>
/// Closes the Task dialog
/// </summary>
public static void CloseForm()
{
if (Instance == null || Instance.IsDisposed)
throw new Exception("Invalid Operation. Please use the Show method before calling any operational methods");
Instance.Invoke((Action)delegate()
{
Instance.Close();
});
}
/// <summary>
/// Runs the form in a new application, to prevent thread lock
/// </summary>
protected static void ShowForm()
{
Application.Run(Instance);
}
/// <summary>
/// Updates the instruction text on the task dialog
/// </summary>
/// <param name="Message"></param>
public static void UpdateInstructionText(string Message)
{
if (Instance == null || Instance.IsDisposed)
throw new Exception("Invalid Operation. Please use the Show method before calling any operational methods");
Instance.Invoke((Action)delegate()
{
Instance.labelInstructionText.Text = Message;
});
}
/// <summary>
/// Updates the detail text above the progress bar
/// </summary>
/// <param name="Message"></param>
public static void UpdateStatus(string Message)
{
if (Instance == null || Instance.IsDisposed)
throw new Exception("Invalid Operation. Please use the Show method before calling any operational methods");
Instance.Invoke((Action)delegate()
{
Instance.labelContent.Text = Message;
});
}
/// <summary>
/// Updates the progress bar's value
/// </summary>
/// <param name="Percent"></param>
public static void UpdateProgress(int Percent)
{
if (Instance == null || Instance.IsDisposed)
throw new Exception("Invalid Operation. Please use the Show method before calling any operational methods");
Instance.Invoke((Action)delegate()
{
Instance.progressBar.Step = Percent;
Instance.progressBar.PerformStep();
Instance.progressBar.Refresh();
});
}
#region Non Static
private void CancelBtn_Click(object sender, EventArgs e)
{
this.DialogResult = DialogResult.Cancel;
this.Close();
}
#endregion
}
UpdateStatusとUpdateInstructionTextメソッドを呼び出したときにテキストが更新されるのは意味がありProgressBarませんが、 を呼び出すと は更新されませんUpdateProgress。どんな助けでも大歓迎です。