How can I make the cursor turn to the wait cursor

Question

How can I display the Wait Busy Cursor  usually the hourglass  to the user to let them know the program is doing something

User · Answer

My approach would be to make all the calculations in a background worker.

Then change the cursor like this:

this.Cursor = Cursors.Wait;

And in the thread's finish event restore the cursor:

this.Cursor = Cursors.Default;

Note, this can also be done for specific controls, so the cursor will be the hourglass only when the mouse is above them.

User · Answer

Use this with WPF   Cursor   Cursors Wait      Your Heavy work here  Cursor   Cursors Arrow

User · Answer

Okey Other people s view are very clear  but I would like to do some added  as follow   Cursor tempCursor   Cursor Current   Cursor Current   Cursors WaitCursor     do Time-consuming Operations           Cursor Current   tempCursor

User · Answer

It is easier to use UseWaitCursor at the Form or Window level  A typical use case can look like below       private void button1 Click object sender  EventArgs e                 try                       this Enabled   false   optional  better target a panel or specific controls             this UseWaitCursor   true   from the Form Window instance             Application DoEvents     messages pumped to update controls               execute a lengthy blocking operation here                 bla bla                        finally                       this Enabled   true   optional             this UseWaitCursor   false                    For a better UI experience you should use Asynchrony from a different thread

User · Answer

You can use Cursor Current      Set cursor as hourglass Cursor Current   Cursors WaitCursor      Execute your time-intensive hashing code here        Set cursor as default arrow Cursor Current   Cursors Default    However  if the hashing operation is really lengthy  MSDN defines this as more than 2-7 seconds   you should probably use a visual feedback indicator other than the cursor to notify the user of the progress  For a more in-depth set of guidelines  see this article   Edit  As  Am pointed out  you may need to call Application DoEvents    after Cursor Current   Cursors WaitCursor  to ensure that the hourglass is actually displayed

User · Answer

Actually    Cursor Current   Cursors WaitCursor    temporarily sets the Wait cursor  but doesn   t ensure that the Wait cursor shows until the end of your operation  Other programs or controls within your program can easily reset the cursor back to the default arrow as in fact happens when you move mouse while operation is still running    A much better way to show the Wait cursor is to set the UseWaitCursor property in a form to true   form UseWaitCursor   true    This will display wait cursor for all controls on the form until you set this property to false  If you want wait cursor to be shown on Application level you should use   Application UseWaitCursor   true

User · Answer

With the class below you can make the suggestion of Donut  exception safe    using  new CursorHandler             Execute your time-intensive hashing code here        the class CursorHandler  public class CursorHandler       IDisposable       public CursorHandler Cursor cursor   null                 saved   Cursor Current          Cursor Current   cursor    Cursors WaitCursor             public void Dispose                 if   saved    null                        Cursor Current    saved               saved   null                       private Cursor  saved

User · Answer

Building on the previous  my preferred approach  since this is a frequently performed action  is to wrap the wait cursor code in an IDisposable helper class so it can be used with using    one line of code   take optional parameters  run the code within  then clean up  restore cursor  afterwards   public class CursorWait   IDisposable       public CursorWait bool appStarting   false  bool applicationCursor   false                   Wait         Cursor Current   appStarting   Cursors AppStarting   Cursors WaitCursor          if  applicationCursor  Application UseWaitCursor   true             public void Dispose                    Reset         Cursor Current   Cursors Default          Application UseWaitCursor   false            Usage   using  new CursorWait             Perform some code that shows cursor

User · Answer

OK so I created a static async method   That disabled the control that launches the action and changes the application cursor   It runs the action as a task and waits for to finish   Control returns to the caller while it waits   So the application remains responsive  even while the busy icon spins   async public static void LengthyOperation Control control  Action action        try               control Enabled   false          Application UseWaitCursor   true          Task doWork   new Task      gt  action    TaskCreationOptions LongRunning           Log Info  Task Start            doWork Start            Log Info  Before Await            await doWork          Log Info  After await              finally               Log Info  Finally            Application UseWaitCursor   false          control Enabled   true          Here s the code form the main form      private void btnSleep Click object sender  EventArgs e                var control   sender as Control          if  control    null                        Log Info  Launching lengthy operation                   CursorWait LengthyOperation control       gt  DummyAction                 Log Info     Lengthy operation launched                           private void DummyAction                 try                       var  log   NLog LogManager GetLogger  TmpLogger                 log Info  Action - Sleep                TimeSpan sleep   new TimeSpan 0  0  16               Thread Sleep sleep                log Info  Action - Wakeup                      finally                             I had to use a separate logger for the dummy action  I am using Nlog  and my main logger is writing to the UI  a rich text box     I wasn t able to get the busy cursor show only when over a particular container on the form  but I didn t try very hard    All controls have a UseWaitCursor property  but it doesn t seem have any effect on the controls I tried  maybe because they weren t on top    Here s the main log  which shows things happening in the order we expect   16 51 33 1064 Launching lengthy operation    16 51 33 1215 Task Start 16 51 33 1215 Before Await 16 51 33 1215    Lengthy operation launched  16 51 49 1276 After await 16 51 49 1537 Finally

User · Answer

For Windows Forms applications an optional disabling of a UI-Control can be very useful  So my suggestion looks like this   public class AppWaitCursor   IDisposable       private readonly Control  eventControl       public AppWaitCursor object eventSender   null                  eventControl   eventSender as Control          if   eventControl    null               eventControl Enabled   false           Application UseWaitCursor   true          Application DoEvents               public void Dispose                 if   eventControl    null               eventControl Enabled   true           Cursor Current   Cursors Default          Application UseWaitCursor   false            Usage   private void UiControl Click object sender  EventArgs e        using  new AppWaitCursor sender                 LongRunningCall

[c#] How can I make the cursor turn to the wait cursor?

Examples related to c#

Examples related to .net

Examples related to winforms

Examples related to user-interface

Examples related to cursor