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xBase-Compatible Databases Icon xBase ADO.NET Provider

Rapidly create and deploy powerful .NET applications that integrate with xBase-compatible database engines (.dbf, .ndx, .ntx, .dbt, etc) like FoxPro, Clipper, etc..

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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 ADO.NET Provider for xBase 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.

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; }