ADO.NET Provider for Parquet

Build 20.0.7654

Connecting from Code

The CData ADO.NET Provider for Parquet implements a standard DbConnection object in ParquetConnection. You can also use the ParquetConnectionStringBuilder to programmatically build, parse, and rebuild connection strings.

Creating Connection Objects

See Establishing a Connection for guides to defining the connection string and authenticating. Below is a typical invocation to create ParquetConnection objects.

C#

using (ParquetConnection connection =   
  new ParquetConnection("URI=C:\folder\table.parquet;"))  
{  
  connection.Open();  
}

VB.NET

Using connection As New ParquetConnection("URI=C:\folder\table.parquet;")
  connection.Open
End Using

Using ParquetConnectionStringBuilder

The following code example shows how to use an ADO.NET connection string builder to parse a connection string.

C#

ParquetConnectionStringBuilder builder =
  new ParquetConnectionStringBuilder("URI=C:\folder\table.parquet;");
  //Pass the connection string builder an existing connection string, and you can get and set any of the elements as strongly typed properties.
  builder.ConnectionString = "URI=C:\folder\table.parquet;";
  //Now that the connection string has been parsed,
  // you can work with individual items:
  builder.MyString = "new property";
  builder.MyBoolean = true;

  // You can refer to connection keys using strings, 
  // as well. 
  builder["Logfile"] = "test.log";
  builder["Verbosity"] = 5;

VB.NET

Dim builder As ParquetConnectionStringBuilder = New ParquetConnectionStringBuilder("URI=C:\folder\table.parquet;")
'Pass the connection string builder an existing connection string, and you can get and set any of the elements using strongly typed properties.
builder.ConnectionString = URI=C:\folder\table.parquet;"
'Now that the connection string has been parsed,
' you can work with individual items:
builder.MyString = "new property"
builder.MyBoolean = True
  
' You can refer to connection keys using strings, 
' as well. 
builder("Logfile") = "test.log"
builder("Verbosity") = 5

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Build 20.0.7654