DataConnectionParametersBase Class
Serves as the base for classes that contain the parameters of data connections.
Namespace: DevExpress.DataAccess.ConnectionParameters
Assembly: DevExpress.DataAccess.v23.2.dll
NuGet Packages: DevExpress.DataAccess, DevExpress.Win.PivotGrid, DevExpress.Win.TreeMap
Declaration
Remarks
The DataConnectionParametersBase descendants contain settings used to specify connection parameters for the SqlDataSource.
Different DataConnectionParametersBase descendants provide connection parameters for different DBMS and data file formats. For instance, you can use the MsSqlConnectionParameters, OracleConnectionParameters, XmlFileConnectionParameters and many others.
To specify connection parameters for the specified SqlDataSource, create the required DataConnectionParametersBase descendant, specify its settings and assign the resulting DataConnectionParametersBase object to the SqlDataSource.ConnectionParameters property.
Example
This example demonstrates how to customize connection settings before the DashboardViewer connects to a database using the DashboardViewer.ConfigureDataConnection event.
In this example, the dashboard’s XML definition contains a path to the secured Microsoft Access database. To visualize data from this database file, it is necessary to provide connection parameters; in particular, a user name and password for authentication. The DashboardViewer.ConfigureDataConnection event is used for this purpose. Its Access97ConnectionParameters.UserName and FileConnectionParametersBase.Password parameters are used to provide the user name and password respectively.
Note
A complete sample project is available at https://github.com/DevExpress-Examples/winforms-dashboard-customize-connection-settings-before-connecting-to-database
using DevExpress.DataAccess.ConnectionParameters;
using DevExpress.DashboardCommon;
using DevExpress.XtraEditors;
namespace Dashboard_ConfigureDataConnection {
public partial class Form1 : XtraForm {
public Form1() {
InitializeComponent();
// Loads a dashboard from an XML file.
dashboardViewer1.LoadDashboard(@"..\..\Data\nwindDashboard.xml");
}
// Handles the ConfigureDataConnection event.
private void dashboardViewer1_ConfigureDataConnection(object sender,
DashboardConfigureDataConnectionEventArgs e) {
// Checks the name of the connection for which the event has been raised.
if (e.DataSourceName == "SQL Data Source 1") {
// Gets the connection parameters used to establish a connection to the database.
Access97ConnectionParameters parameters =
(Access97ConnectionParameters)e.ConnectionParameters;
// Specifies the user name used to access the database file.
parameters.UserName = "Admin";
// Specifies the password used to access the database file.
parameters.Password = "password";
}
}
}
}