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Connect to PostgreSQL Data from PowerBuilder

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

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 PostgreSQL in PowerBuilder.

This article shows how to create a basic PowerBuilder application that uses the CData ADO.NET Provider for PostgreSQL to perform reads and writes.

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

    User=postgres;Password=admin;Database=postgres;Server=127.0.0.1;Port=5432;

    To connect to PostgreSQL, set the Server, Port (the default port is 5432), and Database connection properties and set the User and Password you wish to use to authenticate to the server. If the Database property is not specified, the data provider connects to the user's default database.

  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=ShipName}" Header="ShipName" Width="SizeToHeader" /> ... </DataGrid.Columns> </DataGrid>
  4. Add a reference to the CData ADO.NET Provider for PostgreSQL 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.PostgreSQL.PostgreSQLConnection conn conn = create System.Data.CData.PostgreSQL.PostgreSQLConnection(connectionString) System.Data.CData.PostgreSQL.PostgreSQLCommand comm comm = create System.Data.CData.PostgreSQL.PostgreSQLCommand(command, conn) System.Data.DataTable table table = create System.Data.DataTable System.Data.CData.PostgreSQL.PostgreSQLDataAdapter dataAdapter dataAdapter = create System.Data.CData.PostgreSQL.PostgreSQLDataAdapter(comm) dataAdapter.Fill(table) datagrid1.ItemsSource=table.DefaultView

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