dashboard-113930-winforms-dashboard-winforms-designer-create-dashboards-in-the-winforms-designer-providing-data-sql-data-source-connect-to-sql-databases-microsoft-access-2007.md
The Dashboard Designer allows you to connect to different types of SQL databases in the Data Source Wizard. You can also use data access API to connect to the database and select data in code.
This tutorial describes how to establish a connection to a Microsoft Access database (2007) and select data.
Important
The appropriate data provider must be installed on the client machine. For information on data providers, refer to the Data Sources article.
To connect to an MS Access database in the Dashboard Designer, follow the steps below:
Click the New Data Source button in the Data Source ribbon tab.
On the first page of the invoked Data Source Wizard dialog, specify whether you want to use an existing data connection or create a new data connection.
On the next page, select Microsoft Access 2007 and click Next.
On the next page, specify connection parameters.
After you specify connection parameters, click Next and specify how to select data from the database.
On the final page, you can optionally add query parameters and preview data.
To create a data source that uses a connection to the MS Access database, create an instance of the DashboardSqlDataSource class and follow the steps below:
Specify connection parameters for the MS Access database. Create the Access2007ConnectionParameters class object and specify the following properties:
Create one of the following objects to specify the query:
Add the created DashboardSqlDataSource object to the Dashboard.DataSources collection.
The following code snippet shows how to supply the dashboard with data from the MS Access Northwind database:
using DevExpress.DashboardCommon;
using DevExpress.DataAccess.ConnectionParameters;
using DevExpress.DataAccess.Sql;
// ...
Access2007ConnectionParameters access2007Params = new Access2007ConnectionParameters();
access2007Params.FileName = @"..\..\Data\Northwind.accdb";
access2007Params.Password = "password";
DashboardSqlDataSource sqlDataSource = new DashboardSqlDataSource("Data Source 1", access2007Params);
SelectQuery selectQuery = SelectQueryFluentBuilder
.AddTable("SalesPerson")
.SelectColumns("CategoryName", "Extended Price")
.Build("Query 1");
sqlDataSource.Queries.Add(selectQuery);
sqlDataSource.Fill();
dashboard.DataSources.Add(sqlDataSource);
Imports DevExpress.DashboardCommon
Imports DevExpress.DataAccess.ConnectionParameters
Imports DevExpress.DataAccess.Sql
' ...
Dim access2007Params As New Access2007ConnectionParameters()
access2007Params.FileName = "..\..\Data\Northwind.accdb"
access2007Params.Password = "password"
Dim sqlDataSource As New DashboardSqlDataSource("Data Source 1", access2007Params)
Dim query As SelectQuery = SelectQueryFluentBuilder _
.AddTable("SalesPerson") _
.SelectColumns("CategoryName", "Extended Price") _
.Build("Query 1")
sqlDataSource.Queries.Add(selectQuery)
sqlDataSource.Fill()
dashboard.DataSources.Add(sqlDataSource)