##code
public static class BusyIndicator
{
private static readonly AsyncCallback nullCallback = delegate { };
private static readonly object[] emptyArray = new object[] { };
public static void ShowWhile(Control control, ThreadStart method)
{
if (method == null)
throw new ArgumentException("Missing method definition", "method");
if (control == null)
{
method.BeginInvoke(nullCallback, emptyArray);
return;
}
control.Cursor = Cursors.WaitCursor;
MethodInvoker callback = delegate { control.Cursor = Cursors.Default; };
AsyncCallback invoke = delegate { control.Invoke(callback); };
method.BeginInvoke(invoke, emptyArray);
}
}
##sample usage
BusyIndicator.ShowWhile(this, delegate
{
// Do stuff
});
Show a BusyIndicator during long-tasks execution.
2007-09-26T23:40:49+00:00
18
C#
net-busyindicator
9
.NET BusyIndicator
2008-09-23T20:29:19+00:00
10
##code provided by <a href="http://blogs.ugidotnet.org/Crad/Default.aspx">Marco De Sanctis</a>
public class WaitCursor: IDisposable
{
public WaitCursor()
{
Cursor.Current = Cursors.WaitCursor;
}
public void Dispose()
{
Cursor.Current = Cursors.Default;
}
}
##usage
using (new WaitCursor())
{
// some code here
}
18
I've tested the code and this indicator is something like "Control-specific": this means that the BusyIndicator is showed only when the mouse is under the specific control, and not globally showed (better solutions exists for a global busy indicator using Cursor.Current).
This means that you could use (i think) more than one of this snippets at the same time, using different components as "host".
Now a better solution for a global wait cursor.
2007-09-27T00:41:46+00:00
45
C#
0
0
On .NET BusyIndicator
10
D_Guidi
http://code.google.com/p/nettopologysuite/
public class WaitCursor: IDisposable
{
public WaitCursor(Form form)
{
form.UseWaitCursor = true
}
public void Dispose()
{
form.UseWaitCursor = false
}
}
18
Under .NET 2.0 and onwards, you can also use the UseWaitCursor property. This overrides other cursor settings without changing them, so once you set it to false again you automatically get your old cursor back.
2007-09-28T01:30:36+00:00
76
C#
5
1
On .NET BusyIndicator
Avish
public class WaitCursor: IDisposable
{
public WaitCursor(Control control)
{
control.UseWaitCursor = true
}
public void Dispose()
{
control.UseWaitCursor = false
}
}
18
Cool :)
A suggest, You could (i think, looking at msdn: http://tinyurl.com/26rqaq) use a Control instead of a Form as a parameter... right?
2007-09-28T03:41:53+00:00
89
C#
0
0
On .NET BusyIndicator
10
D_Guidi
http://code.google.com/p/nettopologysuite/
public interface IView {
void ShowWaitState();
void ShowReadyState();
}
public class Presenter {
private IView view;
public Presenter(IView view) {
this.view = view;
}
public void DoSomething() {
view.ShowWaitState();
// ...
view.ShowReadyState();
}
}
18
If I were using this in an MVP pattern I would try to leave the implementation of the wait state up to the view. This way I can re-use the code in an ajax control (set some visual wait indicator) or a winforms application (set the wait cursor).
2007-10-23T13:38:54+00:00
512
C#
0
0
On .NET BusyIndicator
JH