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DataBind Cloudant Data to the DevExpress Data Grid

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

The CData ADO.NET Provider for Cloudant 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.

Set the following connection properties to connect to Cloudant:

  • User: Set this to your username.
  • Password: Set this to your password.

Windows Forms Controls

The code below shows how to populate a DevExpress chart with Cloudant data. The CloudantDataAdapter 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 (CloudantConnection connection = new CloudantConnection( "User=abc123; Password=abcdef;")) { CloudantDataAdapter dataAdapter = new CloudantDataAdapter( "SELECT MovieRuntime, MovieRating FROM Movies", 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[] { "MovieRating" }); series.ArgumentScaleType = DevExpress.XtraCharts.ScaleType.Qualitative; series.ArgumentDataMember = "MovieRuntime"; 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 Cloudant data. The CloudantDataAdapter 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 (CloudantConnection connection = new CloudantConnection( "User=abc123; Password=abcdef;")) { CloudantDataAdapter CloudantDataAdapter1 = new CloudantDataAdapter("SELECT MovieRuntime, MovieRating FROM Movies", connection); DataTable table = new DataTable(); CloudantDataAdapter1.Fill(table); DevExpress.XtraCharts.Series series = new Series("Series1", ViewType.Bar); WebChartControl1.Series.Add(series); series.DataSource = table; series.ValueDataMembers.AddRange(new string[] { "MovieRating" }); series.ArgumentScaleType = ScaleType.Qualitative; series.ArgumentDataMember = "MovieRuntime"; series.ValueScaleType = ScaleType.Numerical; ((DevExpress.XtraCharts.SideBySideBarSeriesView)series.View).ColorEach = true; }
 
 
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