Bind data in Chart control using data reader.

We use DataBindTable method of chart control.

using System.Web.UI.DataVisualization.Charting;
…

private void Page_Load(object sender, System.EventArgs e)
{
// Resolve the address to the Access database
string fileNameString = this.MapPath(“.”);
fileNameString += “..\\..\\..\\data\\chartdata.mdb”;

// Initialize a connection string
string myConnectionString = “PROVIDER=Microsoft.Jet.OLEDB.4.0;Data Source=” + fileNameString;

// Define the database query
string mySelectQuery=”SELECT Name, Sales FROM REPS;”;

// Create a database connection object using the connection string
OleDbConnection myConnection = new OleDbConnection(myConnectionString);

// Create a database command on the connection using query
OleDbCommand myCommand = new OleDbCommand(mySelectQuery, myConnection);

// Open the connection
myCommand.Connection.Open();

// Create a database reader
OleDbDataReader myReader = myCommand.ExecuteReader(CommandBehavior.CloseConnection);

// Since the reader implements and IEnumerable, pass the reader directly into
// the DataBindTable method with the name of the Column to be used as the XValue
Chart1.DataBindTable(myReader, “Name”);

// Close the reader and the connection
myReader.Close();
myConnection.Close();
}