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DevExpress Dashboard入門教程四：自定義連接設(shè)置

原創(chuàng)|使用教程|編輯：我只采一朵|2014-01-17 09:34:28.000|閱讀 2355 次

概述：本文講解如何在DashboardViewer連接到數(shù)據(jù)庫之前自定義連接設(shè)置。

相關(guān)鏈接：

上一講跟大家介紹了如何在 DevExpress Dashboard 中繪制Ribbon UI。本文將為你展示如何在DashboardViewer連接到數(shù)據(jù)庫之前使用DashboardViewer.ConfigureDataConnection事件自定義連接設(shè)置。

這里，儀表盤的XML定義包含一個(gè)連接到Microsoft Access數(shù)據(jù)庫的路徑。如果想讓數(shù)據(jù)庫文件中的數(shù)據(jù)可視，則必須提供連接參數(shù)，尤其是用戶名和密碼。DashboardViewer.ConfigureDataConnection事件的目的也在于此，它的 Access97ConnectionParameters.UserName 和 FileConnectionParametersBase.Password參數(shù)分別用于設(shè)置用戶名和密碼。

請參考以下代碼：

using System.Windows.Forms;
using DevExpress.DataAccess.ConnectionParameters;

namespace Dashboard_ConfigureDataConnection {
public partial class Form1 : Form {
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,
DevExpress.DataAccess.ConfigureDataConnectionEventArgs e) {

// Checks the name of the connection for which the event has been raised.
if (e.ConnectionName == "nwindConnection") {

// 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";
}
}
}
}