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DataBind Access Data to the DevExpress Data Grid
Use the CData ADO.NET Provider for Access with the DevExpress Windows Forms and Web controls to provide Access data to a chart.
The ADO.NET Provider for Access 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.
To connect, set the DataSource property to the path to the Access database.
Windows Forms Controls
The code below shows how to populate a DevExpress chart with Access data. The AccessDataAdapter 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 (AccessConnection connection = new AccessConnection(
"DataSource=C:/MyDB.accdb;")) {
AccessDataAdapter dataAdapter = new AccessDataAdapter(
"SELECT Orders.Freight, Customers.ContactName FROM Customers INNER JOIN Orders ON Customers.CustomerId=Orders.CustomerId", 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[] { "Freight" });
series.ArgumentScaleType = DevExpress.XtraCharts.ScaleType.Qualitative;
series.ArgumentDataMember = "OrderName";
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 Access data. The AccessDataAdapter 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 (AccessConnection connection = new AccessConnection(
"DataSource=C:/MyDB.accdb;"))
{
AccessDataAdapter AccessDataAdapter1 = new AccessDataAdapter("SELECT Orders.Freight, Customers.ContactName FROM Customers INNER JOIN Orders ON Customers.CustomerId=Orders.CustomerId", connection);
DataTable table = new DataTable();
AccessDataAdapter1.Fill(table);
DevExpress.XtraCharts.Series series = new Series("Series1", ViewType.Bar);
WebChartControl1.Series.Add(series);
series.DataSource = table;
series.ValueDataMembers.AddRange(new string[] { "Freight" });
series.ArgumentScaleType = ScaleType.Qualitative;
series.ArgumentDataMember = "OrderName";
series.ValueScaleType = ScaleType.Numerical;
((DevExpress.XtraCharts.SideBySideBarSeriesView)series.View).ColorEach = true;
}
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