The CData ADO.NET Provider for SAP Fieldglass implements two ADO.NET interfaces you can use to retrieve data from SAP Fieldglass: SAPFieldglassDataAdapter and SAPFieldglassDataReader objects. Whereas SAPFieldglassDataAdapter objects retrieve a single result set of all the data that matches a query, SAPFieldglassDataReader objects fetch data in subset increments as needed.

Using the SAPFieldglassDataAdapter

Use the adapter's Fill method to retrieve data from the data source. An empty DataTable instance is passed as an argument to the Fill method. When the method returns, the DataTable instance is populated with the queried data. Note that the SAPFieldglassDataAdapter is slower than the SAPFieldglassDataReader because the Fill method needs to retrieve all data from the data source before returning.

The following example selects the Id and Category columns of the AuditTrails table:

C#

string connectionString = "EnvironmentURL='https://myinstance.com';OAuthClientId=clientId;OAuthClientSecret=clientSecret;APIKey=xxxxxxxx-xxxx-xxxx-xxxx;";

using (SAPFieldglassConnection connection = new SAPFieldglassConnection(connectionString)) {
  SAPFieldglassDataAdapter dataAdapter = new SAPFieldglassDataAdapter(
  "SELECT Id, Category FROM AuditTrails", connection);

  DataTable table = new DataTable();
  dataAdapter.Fill(table);

  Console.WriteLine("Contents of AuditTrails.");

  foreach (DataRow row in table.Rows) {
    Console.WriteLine("{0}: {1}", row["Id"], row["Category"]);
  }
}

VB.NET

Dim connectionString As String = "EnvironmentURL='https://myinstance.com';OAuthClientId=clientId;OAuthClientSecret=clientSecret;APIKey=xxxxxxxx-xxxx-xxxx-xxxx;"

Using connection As New SAPFieldglassConnection(connectionString)
  Dim dataAdapter As New SAPFieldglassDataAdapter("SELECT Id, Category FROM AuditTrails", connection)

  Dim table As New DataTable()
  dataAdapter.Fill(table)

  Console.WriteLine("Contents of AuditTrails.")

  For Each row As DataRow In table.Rows
    Console.WriteLine("{0}: {1}", row("Id"), row("Category"))
  Next
End Using