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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 ADO.NET Provider for Cloudant 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.
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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Cloudant ADO.NET Provider
Rapidly create and deploy powerful .NET applications that integrate with IBM Cloudant NoSQL databases.
