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DataBind xBase Data to the DevExpress Data Grid

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

The CData ADO.NET Provider for xBase 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.

The DataSource property must be set to the name of the folder that contains the .dbf files. Specify the IncludeFiles property to work with xBase table files having extensions that differ from .dbf. Specify multiple extensions in a comma-separated list.

Windows Forms Controls

The code below shows how to populate a DevExpress chart with xBase data. The xBaseDataAdapter 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 (xBaseConnection connection = new xBaseConnection( "DataSource=MyDBFFilesFolder;")) { xBaseDataAdapter dataAdapter = new xBaseDataAdapter( "SELECT Company, SUM(Total) FROM Invoices GROUP BY ContactName", 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[] { "Total" }); series.ArgumentScaleType = DevExpress.XtraCharts.ScaleType.Qualitative; series.ArgumentDataMember = "Company"; 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 xBase data. The xBaseDataAdapter 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 (xBaseConnection connection = new xBaseConnection( "DataSource=MyDBFFilesFolder;")) { xBaseDataAdapter xBaseDataAdapter1 = new xBaseDataAdapter("SELECT Company, SUM(Total) FROM Invoices GROUP BY ContactName", connection); DataTable table = new DataTable(); xBaseDataAdapter1.Fill(table); DevExpress.XtraCharts.Series series = new Series("Series1", ViewType.Bar); WebChartControl1.Series.Add(series); series.DataSource = table; series.ValueDataMembers.AddRange(new string[] { "Total" }); series.ArgumentScaleType = ScaleType.Qualitative; series.ArgumentDataMember = "Company"; series.ValueScaleType = ScaleType.Numerical; ((DevExpress.XtraCharts.SideBySideBarSeriesView)series.View).ColorEach = true; }