ADO.NET Provider for Open Exchange Rates

Build 21.0.7930

Result Sets

You can access the same column information about the results of a query that you can for table schemas. See Columns for the columns returned.

Retrieving Result Set Metadata

You can use the GetSchemaTable method of the OpenExchangeRatesDataReader to retrieve result set metadata. Call GetSchemaTable after calling ExecuteReader.

Each row of the DataTable describes a column in the query's result.

C#

string connectionString = "AppId=abc1234;";

using (OpenExchangeRatesConnection conn = new OpenExchangeRatesConnection(connectionString)) {
  OpenExchangeRatesCommand cmd = new OpenExchangeRatesCommand("SELECT * FROM Projects WHERE Id = 'MyId'", conn);
  OpenExchangeRatesDataReader rdr = cmd.ExecuteReader();
  DataTable schemaTable = rdr.GetSchemaTable();
  foreach (DataRow row in schemaTable.Rows) {
    foreach (DataColumn col in schemaTable.Columns) {
      Console.WriteLine("{0}: {1}", col.ColumnName, row[col]);
    }
  }
}

VB.NET

Dim connectionString As String = "AppId=abc1234;"

Using conn As New OpenExchangeRatesConnection(connectionString)
  Dim cmd As New OpenExchangeRatesCommand("SELECT * FROM Projects WHERE Id = 'MyId'", conn)
  Dim rdr As OpenExchangeRatesDataReader = cmd.ExecuteReader()
  Dim schemaTable As DataTable = rdr.GetSchemaTable()
  For Each row As DataRow In schemaTable.Rows
    For Each col As DataColumn In schemaTable.Columns
      Console.WriteLine("{0}: {1}", col.ColumnName, row(col))
    Next
  Next
End Using

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Build 21.0.7930