Change Object Auditing Mode

• Apr 19, 2024
• 3 minutes to read

The Audit Trail System supports several object auditing modes.

Mode	Description
Full	All object changes are fully audited. This mode is the default.
Lightweight	Only object creation, deletion, and modification are audited. This mode does not audit names and values of changed properties.
CreationOnly	Only object creation is audited. Intended for data import purposes.

This topic describes how to change the object auditing mode in various scenarios.

In .NET Applications

Change Auditing Mode Globally

In the application’s Startup.cs file, add the following code to the AddAuditTrailXpo method call to change the auditing mode globally.

File: MySolution.Blazor.Server\Startup.cs, MySolution.Win\Startup.cs, MySolution.WebApi\Startup.cs

C#

using DevExpress.Persistent.AuditTrail;
// ...
builder.Modules
    .AddAuditTrailXpo(o => {
        o.ObjectAuditingMode = ObjectAuditingMode.Lightweight;
    })

Change Auditing Mode in the Current Scope

Use the service provider’s GetRequiredService method to access the audit trail options and change the auditing mode in the current scope only. The following code sample demonstrates how to change the auditing mode based on the current user:

File: MySolution.Blazor.Server/Startup.cs, MySolution.Win/Startup.cs

C# (Blazor)

using DevExpress.ExpressApp.AuditTrail;
using DevExpress.ExpressApp.Security;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Options;

public class Startup {
    // ...
    public void ConfigureServices(IServiceCollection services) {
        // ...
        services.AddScoped<CircuitHandler, CircuitHandlerProxy>();
        services.AddXaf(Configuration, builder => {
            builder.Security
                .UseIntegratedMode(options => {
                    options.Events.OnLogon += context => {
                        string userName = ((ApplicationUser)context.User).UserName;
                        if (userName == "User") {
                            var auditOptions = context.ServiceProvider.GetRequiredService<IOptionsSnapshot<AuditTrailOptions>>().Value;
                            auditOptions.ObjectAuditingMode = ObjectAuditingMode.Lightweight;
                        }
                    };
                    //...
                })
            // ...
        }
        // ...
    }
    // ...
}

C# (WinForms)

using DevExpress.ExpressApp.AuditTrail;
using DevExpress.ExpressApp.Security;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Options;

public class ApplicationBuilder : IDesignTimeApplicationFactory {
    public static WinApplication BuildApplication(string connectionString) {
        var builder = WinApplication.CreateBuilder();
        // ...
        builder.Security
            .UseIntegratedMode(options => {
                options.Events.OnLogon += context => {
                    string userName = ((ApplicationUser)context.User).UserName;
                    if (userName == "User") {
                        var auditOptions = context.ServiceProvider.GetRequiredService<IOptionsSnapshot<AuditTrailOptions>>().Value;
                        auditOptions.ObjectAuditingMode = ObjectAuditingMode.Lightweight;
                    }
                };
                //...
            })
        // ...
    }
    // ...
}

Note that the AuditTrailOptions type is wrapped into IOptionsSnapshot, which is then passed as the GetRequiredService method’s type parameter. This is done to adjust the Audit Trail module settings in the current scope only. For more information, refer to the following topic: Use IOptionsSnapshot to read updated data.

In .NET Framework Applications

To change the current object auditing mode in .NET Framework Applications, set the AuditTrailService.Instance.ObjectAuditingMode property to one of the ObjectAuditingMode enumeration values. The following code demonstrates how this can be implemented.

C# (WinForms)

static void Main() {
    MySolutionWindowsFormsApplication application = new MySolutionWindowsFormsApplication();
    // ...
    AuditTrailService.Instance.ObjectAuditingMode = ObjectAuditingMode.Lightweight;
    application.Setup();
    application.Start();
    //...
}

C# (ASP.NET Web Forms)

protected void Session_Start(object sender, EventArgs e) {
    WebApplication.SetInstance(Session, new MySolutionWebApplication());
    AuditTrailService.Instance.ObjectAuditingMode = ObjectAuditingMode.Lightweight;
    //...
    WebApplication.Instance.Setup();
    WebApplication.Instance.Start();
}