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Google Contacts Icon Google Contacts ADO.NET Provider

An easy-to-use database-like interface for .NET applications access to live Google Contacts data (Contacts, Groups, etc).

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DataBind Google Contacts Data to the DevExpress Data Grid


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

The ADO.NET Provider for Google Contacts 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.

You can connect to Google APIs on behalf of individual users or on behalf of a domain. Google uses the OAuth authentication standard. See the "Getting Started" section of the help documentation for a guide.

Windows Forms Controls

The code below shows how to populate a DevExpress chart with Google Contacts data. The GoogleContactsDataAdapter 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 (GoogleContactsConnection connection = new GoogleContactsConnection( "InitiateOAuth=GETANDREFRESH")) { GoogleContactsDataAdapter dataAdapter = new GoogleContactsDataAdapter( "SELECT Summary, StartDateTime FROM Friends", 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[] { "StartDateTime" }); series.ArgumentScaleType = DevExpress.XtraCharts.ScaleType.Qualitative; series.ArgumentDataMember = "Summary"; 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 Google Contacts data. The GoogleContactsDataAdapter 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 (GoogleContactsConnection connection = new GoogleContactsConnection( "InitiateOAuth=GETANDREFRESH")) { GoogleContactsDataAdapter GoogleContactsDataAdapter1 = new GoogleContactsDataAdapter("SELECT Summary, StartDateTime FROM Friends", connection); DataTable table = new DataTable(); GoogleContactsDataAdapter1.Fill(table); DevExpress.XtraCharts.Series series = new Series("Series1", ViewType.Bar); WebChartControl1.Series.Add(series); series.DataSource = table; series.ValueDataMembers.AddRange(new string[] { "StartDateTime" }); series.ArgumentScaleType = ScaleType.Qualitative; series.ArgumentDataMember = "Summary"; series.ValueScaleType = ScaleType.Numerical; ((DevExpress.XtraCharts.SideBySideBarSeriesView)series.View).ColorEach = true; }