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

Using the ZohoCRMDataAdapter

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

The following example selects the AccountName and AccountNumber columns of the Accounts table:

C#

string connectionString = "InitiateOAuth=GETANDREFRESH;";

using (ZohoCRMConnection connection = new ZohoCRMConnection(connectionString)) {
  ZohoCRMDataAdapter dataAdapter = new ZohoCRMDataAdapter(
  "SELECT AccountName, AccountNumber FROM Accounts", connection);

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

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

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

VB.NET

Dim connectionString As String = "InitiateOAuth=GETANDREFRESH;"

Using connection As New ZohoCRMConnection(connectionString)
  Dim dataAdapter As New ZohoCRMDataAdapter("SELECT AccountName, AccountNumber FROM Accounts", connection)

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

  Console.WriteLine("Contents of Accounts.")

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