Я разработал простой PleaseWait
класс 2 года назад, но я не обновлял этот класс, он работает очень хорошо, надеюсь, это даст вам идею реализовать вашу логику.
public partial class frmWait : Form
{
public frmWait()
{
InitializeComponent();
}
bool _isMoving = false;
int _moveStart_x = 0;
int _moveStart_y = 0;
private void tmrProgress_Tick(object sender, EventArgs e)
{
if (barProgress.Value == barProgress.Maximum)
barProgress.Value = barProgress.Minimum;
else
barProgress.Value += 1;
}
private void btnCancel_Click(object sender, EventArgs e)
{
Close();
PleaseWait.Abort();
}
protected override CreateParams CreateParams
{
get
{
System.Windows.Forms.CreateParams p = base.CreateParams;
p.ClassStyle += 0x20000;
p.ExStyle += 0x8000000;
return p;
}
}
protected override void WndProc(ref Message m)
{
const int WM_NCHITTEST = 132;
base.WndProc(ref m);
switch (m.Msg)
{
case WM_NCHITTEST:
if (m.Result.ToInt32() == 1)
m.Result = new IntPtr(2);
break;
}
}
private void panelEx1_MouseDown(object sender, MouseEventArgs e)
{
if (e.Button == MouseButtons.Left)
{
_isMoving = true;
_moveStart_x = e.X;
_moveStart_y = e.Y;
}
}
private void panelEx1_MouseUp(object sender, MouseEventArgs e)
{
_isMoving = false;
}
private void pnlContainer_MouseMove(object sender, MouseEventArgs e)
{
if (_isMoving)
this.Location = new Point(Location.X + e.X - _moveStart_x, Location.Y + e.Y - _moveStart_y);
}
}
public class PleaseWait
{
#region Static Operations
private static Boolean _isAborted = false;
private static Boolean _isVisible = false;
private static frmWait _waitForm;
private static String _waitingState = "";
private static Boolean _autoClose = false;
private static Boolean _cancelable = false;
private static System.Threading.Thread _waiterThred;
public delegate void CancelButtonPressed();
public static event CancelButtonPressed OnCancel;
public static Boolean AutoClose
{
get { return PleaseWait._autoClose; }
set { PleaseWait._autoClose = value; }
}
public static string WaitingState
{
get { return PleaseWait._waitingState; }
set { PleaseWait._waitingState = value; }
}
public static bool IsVisible
{
get { return _isVisible; }
internal set { _isVisible = value; }
}
public static void ShowPleaseWait()
{
ShowPleaseWait("", _autoClose, false);
}
public static void ShowPleaseWait(string waitingState)
{
ShowPleaseWait(waitingState, _autoClose, false);
}
public static void ShowPleaseWait(bool autoClose)
{
ShowPleaseWait("", autoClose, false);
}
public static void ShowPleaseWait(string waitingState, bool autoClose, bool cancelable)
{
if (_waiterThred != null)
{
if (_isVisible)
{
// the please wait it woking, just continue and apply the changes
_waitingState = waitingState;
_autoClose = autoClose;
_cancelable = cancelable;
return;
}
else
{
_waiterThred.Abort();
_waiterThred = null;
}
}
_waitingState = waitingState;
_autoClose = autoClose;
_cancelable = cancelable;
_isAborted = false;
_isVisible = false;
if (_autoClose)
Application.Idle += new EventHandler(Application_Idle);
_waiterThred = new System.Threading.Thread(DisplayWaitingForm);
_waiterThred.IsBackground = true;
_waiterThred.Name = "Please Wait....";
_waiterThred.Start();
Application.DoEvents();
}
public static void Abort()
{
_isAborted = true;
}
private static void Application_Idle(object sender, EventArgs e)
{
if (_autoClose)
_isAborted = true;
}
private static void DisplayWaitingForm()
{
if (_waitForm != null)
{
if (!_waitForm.IsDisposed)
_waitForm.Dispose();
_waitForm = null;
_isVisible = false;
}
try
{
if (_isAborted)
return;
_waitForm = new frmWait();
if (_cancelable)
{
_waitForm.btnCancel.Enabled = true;
_waitForm.btnCancel.Click += new EventHandler(btnCancel_Click);
}
try
{
_isVisible = true;
_waitForm.Show();
_waitForm.Focus();
while (!_isAborted)
{
System.Threading.Thread.Sleep(15);
_waitForm.lblMessage.Text = _waitingState;
Application.DoEvents();
_waitForm.lblMessage.Text = _waitingState;
}
_isVisible = false;
}
finally
{
FreeWaitingForm();
}
}
finally
{
_isVisible = false;
}
}
static void btnCancel_Click(object sender, EventArgs e)
{
if (_waitForm.InvokeRequired)
{
_waitForm.BeginInvoke(new EventHandler(btnCancel_Click), new object[] { e });
}
else
{
if (OnCancel != null)
OnCancel.Invoke();
}
}
private static void FreeWaitingForm()
{
_waitingState = "";
_isVisible = false;
if (_waitForm == null)
{
return;
}
_waitForm.Hide();
if (!_waitForm.IsDisposed)
_waitForm.Dispose();
_waitForm = null;
}
#endregion
}
используйте как следующий код:
PleaseWait.ShowPleaseWait("Please wait", true, false);
// If second param is true then it will close the form automatically.
// If third param is true the it will expose a cancel button, so you can cancel your Asynchronous operations.
Я не вставил код дизайна, вы можете понять, посмотрев код.
надеюсь, что это поможет.