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Access to Grid control from within the starttask of a progressbar

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Hub

Posted: Monday, August 22, 2011 12:12:35 PM

Rank: Advanced Member
Groups: Member

Joined: 3/16/2010
Posts: 101

Hello,

I am trying to use a progressbar to show the progress while iterating through the items of a grid and cannot understand why the grid control is not accessible in its latest state from within the RunTask of the progressbar.

I have reproduced (code below) what I saw in the following example including only the grid, the progressbar and and a button to trigger the start of the runtask.

I initialize the grid with some simple data in the page load sub. When triggered, the runtask shows a grid item count of zero.

What am I missing?

Thanks for your help.

Code: Visual Basic.NET

Copy

Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
        If Not IsPostBack Then
            For i = 0 To 4
                Dim gi As EO.Web.GridItem = Grid1.CreateItem()
                gi.Cells(1).Value = "Item " + (i + 1).ToString
                Grid1.Items.Add(gi)
            Next
        End If
    End Sub

    Protected Sub ProgressBar1_RunTask(ByVal sender As Object, ByVal e As EO.Web.ProgressTaskEventArgs)
        '>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
        MsgBox("Number of items:" + Grid1.Items.Count.ToString)
        '>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
        e.UpdateProgress(0, "Start")
        System.Threading.Thread.Sleep(1000)
        Dim i As Integer = 0
        For Each item As EO.Web.GridItem In Grid1.Items
            System.Threading.Thread.Sleep(1000)
            e.UpdateProgress(i * 20, item.Cells(1).Value)
            i = i + 1
        Next
        System.Threading.Thread.Sleep(1000)
        e.UpdateProgress(100, "Finish")
    End Sub

I do not know why the javascript does not show properly. I copied it again in the body of the message below this window...

Code: JavaScript

Copy

<head runat="server"cmt:5109776f-2eae-4526-8c16-c7fe5c3cd8a2--<title></title></head>
<script type="text/javascript"cmt:4645820b-2996-48f7-b0d0-3b6fe49e3e5d--
      function ShowExtraData() {
          var pb = eo_GetObject("ProgressBar1");
          var extraData = pb.getExtraData();
          if (extraData) {
              var div = document.getElementById("divStatus");
              div.innerHTML =  extraData ;
          }
      }
   </script>
<body>
<form id="form1" runat="server"cmt:25072246-57fa-414e-ac46-a7a71dbf1420-- 
<asp:Button ID="Button1" runat="server"  Text="Button" />
 <eo:Grid ID="Grid1" runat="server" BorderColor="#C7D1DF" BorderWidth="1px"  
   FixedColumnCount="1" Height="113px" ItemHeight="19" Width="129px"cmt:922aa7bf-1f7b-4120-9087-6ea2e6b5e314--
     <Columns>
         <eo:RowNumberColumn DataType="Integer" Width="20"cmt:335c3a4c-ccb6-4b91-8e32-623df7a04f37--
         </eo:RowNumberColumn>
         <eo:StaticColumn HeaderText="Header"cmt:1abd36ad-2ffe-45b7-8e0d-2183b01378fd--
         </eo:StaticColumn>
     </Columns>
 </eo:Grid>
<div id="divStatus" style="background-color: #E6FFFF; border: 1px solid #808080; text-align: center; width: 249px;"cmt:b70331a1-2bfe-4b44-8524-2c5c333033d9--</div>
<eo:ProgressBar ID="ProgressBar1" runat="server" BackgroundImage="00060301" 
    BackgroundImageLeft="00060302" BackgroundImageRight="00060303" 
    ClientSideOnValueChanged="ShowExtraData" ControlSkinID="None" 
    IndicatorImage="00060304" onruntask="ProgressBar1_RunTask" ShowPercentage="True" StartTaskButton="Button1" Width="250px"cmt:d3617cbb-267b-424d-acd1-bca1b6935bc9--
</eo:ProgressBar>
</form>
</body>

<head runat="server"><title></title></head>
<script type="text/javascript">
function ShowExtraData() {
var pb = eo_GetObject("ProgressBar1");
var extraData = pb.getExtraData();
if (extraData) {
var div = document.getElementById("divStatus");
div.innerHTML = extraData ;
}
}
</script>
<body>
<form id="form1" runat="server">
<asp:Button ID="Button1" runat="server" Text="Button" />
<eo:Grid ID="Grid1" runat="server" BorderColor="#C7D1DF" BorderWidth="1px"
FixedColumnCount="1" Height="113px" ItemHeight="19" Width="129px">
<Columns>
<eo:RowNumberColumn DataType="Integer" Width="20">
</eo:RowNumberColumn>
<eo:StaticColumn HeaderText="Header">
</eo:StaticColumn>
</Columns>
</eo:Grid>
<div id="divStatus" style="background-color: #E6FFFF; border: 1px solid #808080; text-align: center; width: 249px;"></div>
<eo:ProgressBar ID="ProgressBar1" runat="server" BackgroundImage="00060301"
BackgroundImageLeft="00060302" BackgroundImageRight="00060303"
ClientSideOnValueChanged="ShowExtraData" ControlSkinID="None"
IndicatorImage="00060304" onruntask="ProgressBar1_RunTask" ShowPercentage="True" StartTaskButton="Button1" Width="250px">
</eo:ProgressBar>
</form>
</body>

eo_support

Posted: Monday, August 22, 2011 4:27:36 PM

Rank: Administration
Groups: Administration

Joined: 5/27/2007
Posts: 24,517

Hi,

Please download the latest version from our download page. I believe this was not supported in our earlier versions but was added very recently.

Thanks!

Hub

Posted: Tuesday, August 23, 2011 3:59:04 AM

Rank: Advanced Member
Groups: Member

Joined: 3/16/2010
Posts: 101

Will do.
Thanks for your always amazingly fast support.

H

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