DataBind Phoenix Data to the DevExpress Data Grid

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Phoenix ADO.NET Provider

Rapidly create and deploy powerful .NET applications that integrate with HBase through Apache Phoenix.

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Use the CData ADO.NET Provider for Phoenix with the DevExpress Windows Forms and Web controls to provide Phoenix data to a chart.

The CData ADO.NET Provider for Phoenix implements standard ADO.NET data access components that can be used with third-party controls. The standard ADO.NET process for databinding can be followed to enable bidirectional access to live data from UI controls. In this article we show how to use the CData components to databind to the DevExpress Windows Forms and Web controls; you will databind to a chart that displays current data.

Connect to Apache Phoenix via the Phoenix Query Server. Set the Server and Port (if different from the default port) properties to connect to Apache Phoenix. The Server property will typically be the host name or IP address of the server hosting Apache Phoenix.

Authenticating to Apache Phoenix

By default, no authentication will be used (plain). If authentication is configured for your server, set AuthScheme to NEGOTIATE and set the User and Password properties (if necessary) to authenticate through Kerberos.

Windows Forms Controls

The code below shows how to populate a DevExpress chart with Phoenix data. The ApachePhoenixDataAdapter binds to the Series property of the chart control. The Diagram property of the control defines the x- and y-axes as the column names.

using (ApachePhoenixConnection connection = new ApachePhoenixConnection( "Server=localhost;Port=8765;")) { ApachePhoenixDataAdapter dataAdapter = new ApachePhoenixDataAdapter( "SELECT Id, Column1 FROM MyTable WHERE Id = '123456'", connection); DataTable table = new DataTable(); dataAdapter.Fill(table); DevExpress.XtraCharts.Series series = new DevExpress.XtraCharts.Series(); chartControl1.Series.Add(series); series.DataSource = table; series.ValueDataMembers.AddRange(new string[] { "Column1" }); series.ArgumentScaleType = DevExpress.XtraCharts.ScaleType.Qualitative; series.ArgumentDataMember = "Id"; series.ValueScaleType = DevExpress.XtraCharts.ScaleType.Numerical; chartControl1.Legend.Visibility = DevExpress.Utils.DefaultBoolean.False; ((DevExpress.XtraCharts.SideBySideBarSeriesView)series.View).ColorEach = true; }

Web Controls

The code below shows how to populate a DevExpress Web control with Phoenix data. The ApachePhoenixDataAdapter binds to the Series property of the chart; the Diagram property defines the x- and y-axes as the column names.

using DevExpress.XtraCharts; using (ApachePhoenixConnection connection = new ApachePhoenixConnection( "Server=localhost;Port=8765;")) { ApachePhoenixDataAdapter ApachePhoenixDataAdapter1 = new ApachePhoenixDataAdapter("SELECT Id, Column1 FROM MyTable WHERE Id = '123456'", connection); DataTable table = new DataTable(); ApachePhoenixDataAdapter1.Fill(table); DevExpress.XtraCharts.Series series = new Series("Series1", ViewType.Bar); WebChartControl1.Series.Add(series); series.DataSource = table; series.ValueDataMembers.AddRange(new string[] { "Column1" }); series.ArgumentScaleType = ScaleType.Qualitative; series.ArgumentDataMember = "Id"; series.ValueScaleType = ScaleType.Numerical; ((DevExpress.XtraCharts.SideBySideBarSeriesView)series.View).ColorEach = true; }