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SQL Data Source

  • 2 minutes to read

This tutorial shows how to add the DashboardSqlDataSource to data source storage and make it available to users. The dashboard is supplied with data from the MDF database.

  1. In your application, add the NWind.mdf database to the App_Data folder from the C:\Users\Public\Documents\DevExpress Demos 21.2\Components\Data directory.

  2. In Web.config, specify a connection to the database.

    <configuration>
        <connectionStrings>
            <add name="NWindConnectionString" connectionString="data source=(localdb)\mssqllocaldb;attachdbfilename=|DataDirectory|\NWind.mdf;integrated security=True;connect timeout=120" providerName="System.Data.SqlClient" />    
        </connectionStrings>
    </configuration>
    
  3. In the Default.aspx.cs (or .vb) file, create a public method that returns the configured dashboard’s data source storage (DataSourceInMemoryStorage) and define the SQL data source.

    using System;
    using DevExpress.DashboardCommon;
    using DevExpress.DashboardWeb;
    
    public DataSourceInMemoryStorage CreateDataSourceStorage() {
        DataSourceInMemoryStorage dataSourceStorage = new DataSourceInMemoryStorage();
    
            DashboardSqlDataSource sqlDataSource = new DashboardSqlDataSource("SQL Data Source", "NWindConnectionString");
            SelectQuery query = SelectQueryFluentBuilder
                .AddTable("SalesPerson")
                .SelectAllColumnsFromTable()
                .Build("Sales Person");
            sqlDataSource.Queries.Add(query);
            dataSourceStorage.RegisterDataSource("sqlDataSource", sqlDataSource.SaveToXml());  
    
        return dataSourceStorage;
    }
    

    Note

    Use one of the following approaches to specify connection settings at runtime:

  4. Call the ASPxDashboard.SetDataSourceStorage method to configure the data source storage. Use the created CreateDataSourceStorage method as the SetDataSourceStorage parameter.

    using DevExpress.DashboardWeb;
    
    protected void Page_Load(object sender, EventArgs e) {
        // ...  
    
        // Configures the data source storage.
        ASPxDashboard1.SetDataSourceStorage(CreateDataSourceStorage());
    }
    

The SQL Data Source is now available in the Web Dashboard:

web-dashboard-ex-core-sql-data-source

Users can now bind dashboard items to data in the Web Dashboard’s UI.

Example

The example shows how to make a set of data sources available for users in the Web Dashboard application.

View Example: How to Register Data Sources for ASP.NET Web Forms Dashboard Control

See Also