Displaying a 'busy' dialog during callback

Displaying a 'busy' dialog during callback

Posted by: philw on 8 September 2017, 10:23 am EST

• 

  philw

  • Post Options:
  • Link
    Copy
  • Jump To Answer

  Posted 8 September 2017, 10:23 am EST

  Hi,

  I was wondering if there is any way to display the Ajax style 'busy' dialog during callbacks. Some of my callbacks take a number of seconds, and it would be good to have a visual indicator to the users that something is happening, especially as the IE  'busy' indicator remains inactive during callbacks.

  I realize that I can place code in the Client events callbackStart and callBackStopped, but am not sure how to proceed from this point.

   Regards

  Phil
  
  

• 

  bobm

  • Post Options:
  • Link
    Copy

  Posted 8 September 2017, 10:23 am EST

  Phil -

  See the following thread...

  http://www.clubfarpoint.com/Forums/forums/post/59037.aspx

   

  You can do a search on 'async' to see others.
  
  

• 

  philw

  • Post Options:
  • Link
    Copy

  Posted 8 September 2017, 10:23 am EST

  Wow, as simple as that. Thank you.

   My next question... How do I get to the dialog text, as I will need to localize this?

   Phil
  
  

• 

  bobm

  • Post Options:
  • Link
    Copy

  Posted 8 September 2017, 10:23 am EST

  Phil -

  What dialog text are you referring to?
  
  

• 

  philw

  • Post Options:
  • Link
    Copy

  Posted 8 September 2017, 10:23 am EST

  I have set 'event.async = true' in the callBackStart event and I am now getting a very useful 'busy' dialog when the callback is in progress that says "Please Wait...". My question is, can I get to this text in order to localize it, as our web application supports multiple languages.

   Regards

  Phil
  
  

• 

  bobm

  • Post Options:
  • Link
    Copy

  Posted 8 September 2017, 10:23 am EST

  That text is stored in the resx file of the spread.  I do not know of a way to get to it but I will look into it.
  
  

• 

  bobm

  • Post Options:
  • Link
    Copy

  Posted 8 September 2017, 10:23 am EST

  There is not a way to get to the text that is stored in the resource file of the spread.  I will write this up as an enhancement.  For now you would have to create your own DIV to display.
  
  

• 

  bobm

  • Post Options:
  • Link
    Copy

  Posted 8 September 2017, 10:23 am EST

  After some experimenting I found a way to do this...

  Protected Overrides Sub Render(ByVal writer As System.Web.UI.HtmlTextWriter)
  
  
  
  Dim c As Control = FpSpread1.FindControl("waitMsg")
  
  c.Controls.RemoveAt(0)
  
  Dim s As String = "Calculating"
  
  c.Controls.Add(New LiteralControl(s))
  
  
  
  MyBase.Render(writer)
  
  
  
  
  
  End Sub

   

  This will not display the gif, however.  I am still looking into that.
  
  

• 

  bobm

  • Post Options:
  • Link
    Copy

  Posted 8 September 2017, 10:23 am EST

  Here is the completed code to display a different text and the gif...

  Protected Overrides Sub Render(ByVal writer As System.Web.UI.HtmlTextWriter)
  
  
  
  Dim c As Control = FpSpread1.FindControl("waitMsg")
  
  c.Controls.RemoveAt(0)
  
  Dim s As String = "Calculating"
  
  Dim imgUrl As String = Me.Page.ClientScript.GetWebResourceUrl(GetType(FarPoint.Web.Spread.FpSpread), "FarPoint.Web.Spread.img.spinner.gif")
  
  Dim t As String = "<img src='" + imgUrl + "'/>&nbsp;&nbsp;" + s
  
  
  
  c.Controls.Add(New LiteralControl(t))
  
  
  
  MyBase.Render(writer)
  
  
  
  
  
  End Sub
  
  

• 

  philw

  • Post Options:
  • Link
    Copy

  Posted 8 September 2017, 10:23 am EST

  Thanks for that Bob, I will give that a try...

  Phil
  
  

• 

  Javier.Rapoport

  • Post Options:
  • Link
    Copy

  Posted 9 October 2017, 7:40 am EST

  Hello! I have a very similar issue and I would like to replace the “Please wait” text or remove the control altogether. I am trying to replicate the solution shown above, but it is not working as currently coded. Can anyone assist? We are using: C#, MVC3, Spread 9.4

  
  	[FarPoint.Mvc.Spread.MvcSpreadEvent("PreRender", "PlanningSht")]
          private void PlanningSht_PreRender(object sender, EventArgs e)
          {
              FpSpread spread = (FpSpread) sender;
  
              var control = spread.FindControl("waitMsg"); // THIS IS NULL 
              //control.Controls.RemoveAt(0); 
  	}
  
  

• 

  grapecity

  • Post Options:
  • Link
    Copy

  Posted 12 October 2017, 2:17 am EST

  Hello,

  You can handle the PreRender event for the Spread control in your controller and attach a handler for the PreRenderComplete event on the Page:
  
  private void FpSpread1_PreRender(object sender, EventArgs e)
  
  {
  
  FarPoint.Mvc.Spread.FpSpread fpspread1 = (FarPoint.Mvc.Spread.FpSpread)sender;
  
  System.Web.UI.Page page = fpspread1.Page;
  
  page.PreRenderComplete += new EventHandler(page_PreRenderComplete);
  
  }
  
  Handle the PreRenderComplete event for the page to add your button:
  
  void page_PreRenderComplete(object sender, EventArgs e)
  
  {
  
  System.Web.UI.Page page = (System.Web.UI.Page)sender;
  
  FarPoint.Mvc.Spread.FpSpread spread = (FarPoint.Mvc.Spread.FpSpread)page.FindControl(“FpSpread1”);
  
  System.Web.UI.Control c = spread.FindControl(“waitMsg”);

  Please try the code above and let me know if you face any issues.

  Thanks,
  
  Deepak Sharma

• 

  Javier.Rapoport

  • Post Options:
  • Link
    Copy

  Posted 16 October 2017, 5:49 am EST

  Thanks, Deepak! That worked!

• 

  grapecity

  • Post Options:
  • Link
    Copy

  Posted 16 October 2017, 6:14 pm EST

  Glad to to know that!

  Regards,
  
  Deepak Sharma