Connect to Parquet Data from PowerBuilder

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Parquet ADO.NET Provider

Rapidly create and deploy powerful .NET applications that integrate with Parquet.

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This article demonstrates how to access Parquet data from PowerBuilder using the CData ADO.NET Provider for Parquet.

The CData ADO.NET providers are easy-to-use, standards-based controls that can be used from any platform or development technology that supports Microsoft .NET, including PowerBuilder. This article shows how to use the CData ADO.NET Provider for Parquet in PowerBuilder.

This article shows how to create a basic PowerBuilder application that uses the CData ADO.NET Provider for Parquet to retrieve data.

  1. In a new WPF Window Application solution, add all the Visual Controls needed for the connection properties. Below is a typical connection string:

    URI=C:/folder/table.parquet;

    Connect to your local Parquet file(s) by setting the URI connection property to the location of the Parquet file.

  2. Add the DataGrid control from the .NET controls.
  3. Configure the columns of the DataGrid control. Below are several columns from the Account table: <DataGrid AutoGenerateColumns="False" Margin="13,249,12,14" Name="datagrid1" TabIndex="70" ItemsSource="{Binding}"> <DataGrid.Columns> <DataGridTextColumn x:Name="idColumn" Binding="{Binding Path=Id}" Header="Id" Width="SizeToHeader" /> <DataGridTextColumn x:Name="nameColumn" Binding="{Binding Path=Id}" Header="Id" Width="SizeToHeader" /> ... </DataGrid.Columns> </DataGrid>
  4. Add a reference to the CData ADO.NET Provider for Parquet assembly.

Connect the DataGrid

Once the visual elements have been configured, you can use standard ADO.NET objects like Connection, Command, and DataAdapter to populate a DataTable with the results of an SQL query:

System.Data.CData.Parquet.ParquetConnection conn conn = create System.Data.CData.Parquet.ParquetConnection(connectionString) System.Data.CData.Parquet.ParquetCommand comm comm = create System.Data.CData.Parquet.ParquetCommand(command, conn) System.Data.DataTable table table = create System.Data.DataTable System.Data.CData.Parquet.ParquetDataAdapter dataAdapter dataAdapter = create System.Data.CData.Parquet.ParquetDataAdapter(comm) dataAdapter.Fill(table) datagrid1.ItemsSource=table.DefaultView

The code above can be used to bind data from the specified query to the DataGrid.