Async Webservice Result Object

[Laird]

Using the Following Code
Private WithEvents m_WS As WSSyfretsOrders.WSSyfretsOrders

Private Sub UtilityToolBar1_MapDrivePressed(ByVal sender As
System.Object, ByVal e As System.EventArgs) Handles
UtilityToolBar1.MapDrivePressed
m_WS = New WSSyfretsOrders.WSSyfretsOrders
AddHandler m_WS.Get_OnprocessedCompleted, AddressOf
Get_OnprocessedCompleted
Start_WSCall()
End Sub
Private Sub Get_OnprocessedCompleted(ByVal Sender As Object, ByVal e As
SyfretsOrderWatch.WSSyfretsOrders.Get_OnprocessedC ompletedEventArgs)

Me.DataGridView1.DataSource = e.Result
Me.ToolStripLabel1.Text = Now.ToLongTimeString
End Sub

This works but I want to get to the Result as a datatable from the webservice.
I have looked at e the event argument but not found a way to get the
datatable out.

Any Advice Much appreciated.

[John Saunders]

"Laird" <La***@discussions.microsoft.comwrote in message
news:35**********************************@microsof t.com...

Using the Following Code
Private WithEvents m_WS As WSSyfretsOrders.WSSyfretsOrders

Private Sub UtilityToolBar1_MapDrivePressed(ByVal sender As
System.Object, ByVal e As System.EventArgs) Handles
UtilityToolBar1.MapDrivePressed
m_WS = New WSSyfretsOrders.WSSyfretsOrders
AddHandler m_WS.Get_OnprocessedCompleted, AddressOf
Get_OnprocessedCompleted
Start_WSCall()
End Sub
Private Sub Get_OnprocessedCompleted(ByVal Sender As Object, ByVal e As
SyfretsOrderWatch.WSSyfretsOrders.Get_OnprocessedC ompletedEventArgs)

Me.DataGridView1.DataSource = e.Result
Me.ToolStripLabel1.Text = Now.ToLongTimeString
End Sub

This works but I want to get to the Result as a datatable from the
webservice.
I have looked at e the event argument but not found a way to get the
datatable out.

Any Advice Much appreciated.

How can we know how to get you a DataTable when you don't provide us any
information on the web service?

John

[Laird]

"John Saunders" wrote:

"Laird" <La***@discussions.microsoft.comwrote in message
news:35**********************************@microsof t.com...

Using the Following Code
Private WithEvents m_WS As WSSyfretsOrders.WSSyfretsOrders

Private Sub UtilityToolBar1_MapDrivePressed(ByVal sender As
System.Object, ByVal e As System.EventArgs) Handles
UtilityToolBar1.MapDrivePressed
m_WS = New WSSyfretsOrders.WSSyfretsOrders
AddHandler m_WS.Get_OnprocessedCompleted, AddressOf
Get_OnprocessedCompleted
Start_WSCall()
End Sub
Private Sub Get_OnprocessedCompleted(ByVal Sender As Object, ByVal e As
SyfretsOrderWatch.WSSyfretsOrders.Get_OnprocessedC ompletedEventArgs)

Me.DataGridView1.DataSource = e.Result
Me.ToolStripLabel1.Text = Now.ToLongTimeString
End Sub

This works but I want to get to the Result as a datatable from the
webservice.
I have looked at e the event argument but not found a way to get the
datatable out.

Any Advice Much appreciated.

How can we know how to get you a DataTable when you don't provide us any
information on the web service?

John

The Webmethod returns a DataTable as the Result.
I can bind the reply object to a datagrid or databound control but I want to
be able to access the DataTable that is being returned from the Webservice.

Thank you kindly.

[John Saunders]

"Laird" <La***@discussions.microsoft.comwrote in message
news:52**********************************@microsof t.com...

>

"John Saunders" wrote:

>How can we know how to get you a DataTable when you don't provide us any
information on the web service?

John

The Webmethod returns a DataTable as the Result.
I can bind the reply object to a datagrid or databound control but I want
to
be able to access the DataTable that is being returned from the
Webservice.

Two things:

1) You say you can bind the result to a DataGrid. What is the .NET type of
the result?
2) You should avoid platform-specific types in web services. The web
services infrastructure was designed with cross-platform scenarios in mind.
Even when the two platforms are the same, this design tends to bring
everything down to the least-common-denominator.

Instead of returning a DataTable, I suggest you return a collection of
what's known as a Data Transfer Object (DTO). This is not a business object,
but rather an object intended only to hold the "data" portion of a business
object. For instance, if you are using typed datasets and your rows have
columns a, b, and c:

private struct EmployeeDTO
{
public int a;
public string b;
public DateTime c;
}

[WebMethod]
public EmployeeDTO[] MyWebMethod()
{
_dataAdapter.Fill(_dataSet);
EmployeeDTO[] result = new EmploeeDTO[_dataSet.EmployeeTable.Count];

for (int i=0; i<_dataSet.EmployeeTable.Count; i++)
{
result[i] = new EmployeeDTO();
result[i].a = _dataSet.EmployeeTable[i].a;
result[i].b = _dataSet.EmployeeTable[i].b;
result[i].c = _dataSet.EmployeeTable[i].c;
}

return result;
}

John