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DataBind CSV Data to the DevExpress Data Grid

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

The CData ADO.NET Provider for CSV 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 a valid local folder name. Also, specify the IncludeFiles property to work with text files having extensions that differ from .csv, .tab, or .txt. Specify multiple file extensions in a comma-separated list. You can also set Extended Properties compatible with the Microsoft Jet OLE DB 4.0 driver. Alternatively, you can provide the format of text files in a Schema.ini file.

Windows Forms Controls

The code below shows how to populate a DevExpress chart with CSV data. The CSVDataAdapter 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 (CSVConnection connection = new CSVConnection( "DataSource=MyCSVFilesFolder;")) { CSVDataAdapter dataAdapter = new CSVDataAdapter( "SELECT City, SUM(TotalDue) FROM Customer GROUP BY City", 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[] { "TotalDue" }); series.ArgumentScaleType = DevExpress.XtraCharts.ScaleType.Qualitative; series.ArgumentDataMember = "City"; 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 CSV data. The CSVDataAdapter 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 (CSVConnection connection = new CSVConnection( "DataSource=MyCSVFilesFolder;")) { CSVDataAdapter CSVDataAdapter1 = new CSVDataAdapter("SELECT City, SUM(TotalDue) FROM Customer GROUP BY City", connection); DataTable table = new DataTable(); CSVDataAdapter1.Fill(table); DevExpress.XtraCharts.Series series = new Series("Series1", ViewType.Bar); WebChartControl1.Series.Add(series); series.DataSource = table; series.ValueDataMembers.AddRange(new string[] { "TotalDue" }); series.ArgumentScaleType = ScaleType.Qualitative; series.ArgumentDataMember = "City"; series.ValueScaleType = ScaleType.Numerical; ((DevExpress.XtraCharts.SideBySideBarSeriesView)series.View).ColorEach = true; }
 
 
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