Hi Aaron,

ISDataSource acts as medium object that connects data into UI, so you can actually use just any kind of backend. Since ISDataSource supports native connection to both dataset-generated object and custom object, you can develop your data access layer using the way you preferred, and then use ISDataSource to easily connect that object into databound UI controls such as WebGrid, WebCombo, and so on.

To give you a quick idea how ISDataSource works, see the following code which retrieves data from custom data access layer and then bound to a WebGrid.

<ISWebGrid:WebGrid ID="WebGrid1" runat="server" DataSourceID="ISDataSource1">
  ...
</ISWebGrid:WebGrid>
<ISDataSource:ISDataSource ID="ISDataSource1" runat="server" SchemaType="CustomObject">
      <Tables>
            <ISDataSource:ISDataSourceTable DataObjectTypeName="MyData" 
                    DeleteMethod="Delete" InsertMethod="Insert" SelectMethod="GetData"
                    TableName="Customers" TypeName="MyDataAccess" UpdateMethod="Update">
            </ISDataSource:ISDataSourceTable>
      </Tables>
</ISDataSource:ISDataSource>

To try the sample directly, open WebGrid 7.0 Tutorial C# solution from the program group, then expand V5.0 folder and then IntersoftDataSourceControl folder. Finally, look for CustomDataObject_Flat.aspx sample. There are also many useful samples that you can find in that folder. 

Hope this helps,
James.

Xedem,

I don't think Firebug can show the total bytes of the compressed size. AFAIK, only HttpWatch and some other commercial tools can detect the compressed size properly.

You can try to check using HttpWatch in Internet Explorer. If it works in IE, then it also works in other browsers that support content encoding.

Hope this helps,
James.

Arun,

With the setting turned off, the data caching will still work in subsequent postback and FlyPostBack requests. However, the data cache will be invalidated on first page load (non postback condition).

Looking at your scenario, I'd suggest you to set the AlwaysUseCachedDataOnFirstLoad property to false to ensure your data is fresh upon first load.

The GetCachedDataSource is the correct method to get cached data, and not .DataSource property. 

Siva, the 2009 updates should work with your existing code. However, like any applications, you still have to test your application before deploying.

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.