Intersoft Community - WebGrid Enterprise - Some ClientSideEvents are not fired

Some ClientSideEvents are not fired

Michael — Wed, 09 Sep 2009 12:23:15 GMT

Great

Thanks James!

Some ClientSideEvents are not fired

james — Wed, 09 Sep 2009 11:52:33 GMT

Michael,

Yes, Refresh is an asynchronous AJAX process. But you can also run it synchronously by simply setting the Asynchronous property to false.

Here's how:

grid.XmlHttp.Asynchronous = false;

Remember to set it to true again after your Refresh() method call.

Hope this helps,
James.

Some ClientSideEvents are not fired

Michael — Wed, 09 Sep 2009 10:57:56 GMT

Hi James

I want refresh date before I check Dependencies. I have add grd.Refresh()

Now I get sometimes following Message:

Please wait while WebGrid is in progress processing request...

Is refresh performed asynchronously? Is there a way to refresh data first?

function grd_OnAcceptAllChanges(controlId) {

    var grd = ISGetObject(controlId);
    grd.Refresh();

    var DelChanges = grd.GetChanges("Deleted");
    for (var i in DelChanges) {
        if (DelChanges[i].Row.GetCell("Dependencies").Value != "0") {
            DelChanges[i].Row.UndoChanges();
            alert("Row can't be deleted: " + DelChanges[i].Row.GetCell("Name").Value);
        }
    }
    return true;
}

Some ClientSideEvents are not fired

james — Wed, 09 Sep 2009 06:32:27 GMT

Now, I use ClientSideEvent OnAcceptAllChanges. Perhaps, somebody knows a better way

function grd_OnAcceptAllChanges(controlId){
    var grd = ISGetObject(controlId);
    var DelChanges = grd.GetChanges("Deleted");
    
    for (var i in DelChanges)
    {
        if (DelChanges[i].Row.GetCell("Dependencies").Value != "0") {
            DelChanges[i].Row.UndoChanges();
        }                 
    }
    return true;
}

Michael,

I think your code is already good and decent. That should be the best way to achieve your scenario.

- James.

Some ClientSideEvents are not fired

handy@intersoftpt.com — Wed, 09 Sep 2009 05:48:06 GMT

If you can get cells information of a row object, would it be a help for your scenario?

e.g. rowObject.GetCells()[i];

You can get the value of each cells and also keyValue in each rowObject. Hope this helps.

Some ClientSideEvents are not fired

Michael — Wed, 09 Sep 2009 05:40:50 GMT

The user should not be able to delete some rows.

I will check this before the data is sent to the database. Has User deleted a row which has Dependencies (e.g. foreign key constraint), I will undo changes (for this row only).

With ClientSideEvent "OnBeforeDelete" I could inform User by realtime. But this Event is not fired in Batch Update mode. Therefore, I inform the user on OnAcceptAllChanges Event.

Some ClientSideEvents are not fired

handy@intersoftpt.com — Wed, 09 Sep 2009 03:41:02 GMT

What exactly do you want to achieve? If you want to UndoChanges, you can also validate at OnUndoChanges event. There should be a parameter, rowObject.
rowObject has a properties, _RowStateCached which will able you to know if its state deleted, modified or etc. Hope this helps.

Regards,
Handy

Some ClientSideEvents are not fired

Michael — Wed, 09 Sep 2009 02:08:14 GMT

Now, I use ClientSideEvent OnAcceptAllChanges. Perhaps, somebody knows a better way

function grd_OnAcceptAllChanges(controlId)
{
    var grd = ISGetObject(controlId);

    var DelChanges = grd.GetChanges("Deleted");
    
    for (var i in DelChanges)
    {
        if (DelChanges[i].Row.GetCell("Dependencies").Value != "0") {
            DelChanges[i].Row.UndoChanges();
        }                 
    }
    return true;
}

Some ClientSideEvents are not fired

handy@intersoftpt.com — Tue, 08 Sep 2009 22:49:22 GMT

As James has said, those events will be fired only in normal updating mode, not for BatchUpdate scenario. I am sure that the information from James has already answered your question.

Regards,
Handy

Some ClientSideEvents are not fired

james — Tue, 08 Sep 2009 12:20:19 GMT

Michael,

It appears that the OnBeforeXXX and OnAfterXXX for editing-type operations will be fired only in normal updating mode (non batch updating).

I think the reason is because batch update has its own specific events such as OnAcceptAllChanges, OnAddPendingChanges, OnUndoChanges and OnUndoAllChanges which supercede the basic editing events.

Hope this helps,
James.

Some ClientSideEvents are not fired

Michael — Tue, 08 Sep 2009 11:33:41 GMT

Please have a look on follow Code sequence.

ClientSideEvent grd_OnBeforeDelete, grd_OnBeforeAdd and grd_OnAfterDelete are not fired!

ClientSideEvent grd_OnBeforeRowSelect, grd_OnCellDblClick works fine!

Why?

AllowAddNew and AllowDelete are set to Yes on ServerSideEvent grd_InitializeLayout.

<%@ Page Title="" Language="C#" MasterPageFile="~/Relays/Masterdata/MasterData.master" AutoEventWireup="true" CodeBehind="Errorlist.aspx.cs" Inherits="QS_Client.Relays.Masterdata.Errorlist" %>
<%@ Register assembly="ISNet.WebUI.WebDesktop" namespace="ISNet.WebUI.WebDesktop" tagprefix="ISWebDesktop" %>
<%@ Register assembly="ISNet.WebUI.WebGrid" namespace="ISNet.WebUI.WebGrid" tagprefix="ISWebGrid" %>

<asp:Content ID="Content1" ContentPlaceHolderID="head" runat="server">

    <script language="javascript" type="text/javascript" id="grd_OnBeforeDelete">
		<!--
		function grd_OnBeforeDelete(controlId, tblName, rowObject)
		{
		    var grd = ISGetObject(controlId);
		    alert("grd_OnBeforeDelete");

			return true;			
		}
		-->
</script>

    <script language="javascript" type="text/javascript" id="grd_OnBeforeRowSelect">
		<!--
		function grd_OnBeforeRowSelect(controlId, tblName, lastSelectedObject)
		{
		    var grd = ISGetObject(controlId);
		    alert("grd_OnBeforeRowSelect");
			
			return true;
		}
		-->
</script>

    <script language="javascript" type="text/javascript" id="grd_OnBeforeAdd">
		<!--
		function grd_OnBeforeAdd(controlId, tblName, rowObject)
		{
		    var grd = ISGetObject(controlId);
		    alert("grd_OnBeforeAdd");
			
			return true;
		}
		-->
</script>

    <script language="javascript" type="text/javascript" id="grd_OnAfterDelete">
		<!--
		function grd_OnAfterDelete(controlId, tblName, rowObject, xmlResponseObject)
		{
		    var grd = ISGetObject(controlId);
		    alert("grd_OnAfterDelete");
			
			return true;
		}
		-->
</script>

    <script language="javascript" type="text/javascript" id="grd_OnCellDblClick">
		<!--
		function grd_OnCellDblClick(controlId, tblName, rowIndex, cellIndex, cellEl)
		{
			var grd = ISGetObject(controlId);
			alert("grd_OnCellDblClick");
			return true;
		}
		-->
</script>
</asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="cphMasterdata" runat="server">
    <ISWebGrid:WebGrid ID="grd" runat="server" Height="250px" 
        oninitializelayout="grd_InitializeLayout" UseDefaultStyle="True" Width="500px" 
        oninitializedatasource="grd_InitializeDataSource" 
        oninitializerow="grd_InitializeRow" 
        onpreparedatabinding="grd_PrepareDataBinding" 
        onbatchupdate="grd_BatchUpdate">
        <LayoutSettings>
            <ClientSideEvents OnBeforeDelete="grd_OnBeforeDelete" 
                OnBeforeRowSelect="grd_OnBeforeRowSelect" OnBeforeAdd="grd_OnBeforeAdd" 
                OnAfterDelete="grd_OnAfterDelete" OnCellDblClick="grd_OnCellDblClick" />
        </LayoutSettings>
    </ISWebGrid:WebGrid>
</asp:Content>