DataBind Hive Data to the DevExpress Data Grid

The ADO.NET Provider for Hive by CData incorporates conventional ADO.NET data access components compatible with third-party controls. You can adhere to the standard ADO.NET data binding procedures to establish two-way access to real-time data through UI controls. This article will demonstrate the utilization of CData components for data binding with DevExpress UI Controls (Windows Forms and Web controls), specifically binding to a chart that visualizes live data.

Windows Forms Controls

The code below shows how to populate a DevExpress chart with Hive data. The ApacheHiveDataAdapter 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 (ApacheHiveConnection connection = new ApacheHiveConnection(
"Server=127.0.0.1;Port=10000;TransportMode=BINARY;")) {
  ApacheHiveDataAdapter dataAdapter = new ApacheHiveDataAdapter(
  "SELECT City, CompanyName FROM Customers", 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[] { "CompanyName" });
  series.ArgumentScaleType = DevExpress.XtraCharts.ScaleType.Qualitative;
  series.ArgumentDataMember = "City";
  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 Hive data. The ApacheHiveDataAdapter 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 (ApacheHiveConnection connection = new ApacheHiveConnection(
"Server=127.0.0.1;Port=10000;TransportMode=BINARY;"))
{
  ApacheHiveDataAdapter ApacheHiveDataAdapter1 = new ApacheHiveDataAdapter("SELECT City, CompanyName FROM Customers", connection);
  DataTable table = new DataTable();
  ApacheHiveDataAdapter1.Fill(table);
  DevExpress.XtraCharts.Series series = new Series("Series1", ViewType.Bar);
  WebChartControl1.Series.Add(series);
  series.DataSource = table;
  series.ValueDataMembers.AddRange(new string[] { "CompanyName" });
  series.ArgumentScaleType = ScaleType.Qualitative;
  series.ArgumentDataMember = "City";
  series.ValueScaleType = ScaleType.Numerical;
  ((DevExpress.XtraCharts.SideBySideBarSeriesView)series.View).ColorEach = true;
}