ADO.NET Provider for Alfresco

Build 21.0.7930

Querying with the DataAdapter

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

Using the AlfrescoDataAdapter

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 AlfrescoDataAdapter is slower than the AlfrescoDataReader because the Fill method needs to retrieve all data from the data source before returning.

The following example selects the DBID and Column1 columns of the Alfresco table:

C#

string connectionString = "ConnectionProperty1=Value1;ConnectionProperty2=Value2";

using (AlfrescoConnection connection = new AlfrescoConnection(connectionString)) {
  AlfrescoDataAdapter dataAdapter = new AlfrescoDataAdapter(
  "SELECT DBID, Column1 FROM Alfresco", connection);

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

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

  foreach (DataRow row in table.Rows) {
    Console.WriteLine("{0}: {1}", row["DBID"], row["Column1"]);
  }
}

VB.NET

Dim connectionString As String = "ConnectionProperty1=Value1;ConnectionProperty2=Value2"

Using connection As New AlfrescoConnection(connectionString)
  Dim dataAdapter As New AlfrescoDataAdapter("SELECT DBID, Column1 FROM Alfresco", connection)

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

  Console.WriteLine("Contents of Alfresco.")

  For Each row As DataRow In table.Rows
    Console.WriteLine("{0}: {1}", row("DBID"), row("Column1"))
  Next
End Using

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Build 21.0.7930