Public ReadOnly Property IsFlyDataRequest As Boolean

Dim instance As DataSourceEventArgs
Dim value As Boolean
 
value = instance.IsFlyDataRequest

public bool IsFlyDataRequest {get;}

public read-only property IsFlyDataRequest: Boolean; 

public function get IsFlyDataRequest : boolean

public: __property bool get_IsFlyDataRequest();

public:
property bool IsFlyDataRequest {
   bool get();
}

if (!e.IsFlyDataRequest) 
{
        // the codes below is used to retrieve WebCombo's text value on data binding when page is first load.
        if (WebCombo1.Value != "" && WebCombo1.Value != null) 
        {
                oleDbSelectCommand1.CommandText = "Select * From Customers Where " + WebCombo1.DataValueField + " = '" + WebCombo1.Value + "'";
                oleDbDataAdapter1.Fill(dsNorthWind1);
                e.DataSource = dsNorthWind1;
        }
}
else 
{
        // use following codes to retrieve data when data request is invoked from client.
        int TopRows = e.StartRow + e.RowCount;
        oleDbSelectCommand1.CommandText = "Select TOP " + TopRows + " * From Customers Where " + WebCombo1.DataTextField + " Like '" + e.QueryText + "%'";
        
        // fill data source with a start row and maximum rows, pass it to e.DataSource.
        oleDbDataAdapter1.Fill(dsNorthWind1, e.StartRow, e.RowCount, "Customers");
        e.DataSource = dsNorthWind1;
        // tell WebCombo to skip automatic row parsing because we already implement our own top rows implementation.
        WebCombo1.SkipRowParsing = true;
        // now we need to retrieve original total records of the query in order for WebCombo to show correct total rows.
        // notice that we used fast and lightweight data reader to get the total rows count.
        oleDbConnection1.Open();
        oleDbSelectCommand1.CommandText = "Select Count(CustomerID) From Customers Where " + WebCombo1.DataTextField + " Like '" + e.QueryText + "%'";
        
        OleDbDataReader dr = oleDbSelectCommand1.ExecuteReader(CommandBehavior.CloseConnection);
        dr.Read();
        WebCombo1.TotalDataSourceRows = int.Parse(dr[0].ToString());
}