DefaultReportDesignerContainer.RegisterDataSourceWizardJsonConnectionStorage<T>(Boolean) Method

Registers a custom service that stores and provides JSON connections.

Namespace: DevExpress.XtraReports.Web.ReportDesigner

Assembly: DevExpress.XtraReports.v26.1.Web.dll

NuGet Package: DevExpress.Web.Reporting.Common

Declaration

C#

public static void RegisterDataSourceWizardJsonConnectionStorage<T>(
    bool overrideWebConfigConnections
)
    where T : IDataSourceWizardJsonConnectionStorage

VB.NET

Public Shared Sub RegisterDataSourceWizardJsonConnectionStorage(Of T As IDataSourceWizardJsonConnectionStorage)(
    overrideWebConfigConnections As Boolean
)

Parameters

Name	Type	Description
overrideWebConfigConnections	Boolean	True to use the DevExpress.DataAccess.Web.IJsonDataConnectionProviderFactory interface implemented in the storage; otherwise, use the DevExpress.DataAccess.Web.IJsonDataConnectionProviderFactory interface implemented in the viewer.

Type Parameters

Name	Description
T	The type of the class that implements the DevExpress.DataAccess.Web.IDataSourceWizardJsonConnectionStorage interface.

Remarks

The connection storage receives, stores and provides JSON connection strings on demand.

The following code in the ASP.NET Reporting Demo registers services at the application startup:

Global.asax.cs

using DevExpress.DataAccess.Web;
using DevExpress.XtraReports.Web.Extensions;
using DevExpress.XtraReports.Web.QueryBuilder;
using DevExpress.XtraReports.Web.QueryBuilder.Native;
using DevExpress.XtraReports.Web.ReportDesigner;
using DevExpress.XtraReports.Web.ReportDesigner.Native;
using DevExpress.XtraReports.Web.WebDocumentViewer;
using DevExpress.XtraReports.Web.WebDocumentViewer.Native;
using System;
using System.Web.SessionState;

namespace WebApplication1
{
    public class Global : System.Web.HttpApplication
    {
        protected void Application_Start(object sender, EventArgs e)
        {
            ReportDesignerBootstrapper.SessionState = SessionStateBehavior.Required;
            WebDocumentViewerBootstrapper.SessionState = SessionStateBehavior.Required;
            QueryBuilderBootstrapper.SessionState = SessionStateBehavior.Required;
            // ...
            DefaultReportDesignerContainer.RegisterDataSourceWizardConfigFileJsonConnectionStringsProvider();
            DefaultReportDesignerContainer.RegisterDataSourceWizardJsonConnectionStorage<CustomDataSourceWizardJsonDataConnectionStorage>(true);
            DefaultWebDocumentViewerContainer.Register<IJsonDataConnectionProviderFactory, CustomJsonDataConnectionProviderFactory>();
            DefaultQueryBuilderContainer.Register<IJsonDataConnectionProviderFactory, CustomJsonDataConnectionProviderFactory>();
            // ...
        }
    // ...
    }
}

Global.asax.vb

Imports System.Web.SessionState
Imports DevExpress.DataAccess.Web
Imports DevExpress.XtraReports.Web.Extensions
Imports DevExpress.XtraReports.Web.QueryBuilder
Imports DevExpress.XtraReports.Web.QueryBuilder.Native
Imports DevExpress.XtraReports.Web.ReportDesigner
Imports DevExpress.XtraReports.Web.ReportDesigner.Native
Imports DevExpress.XtraReports.Web.WebDocumentViewer
Imports DevExpress.XtraReports.Web.WebDocumentViewer.Native

Namespace WebApplication1
    Public Class [Global]
        Inherits System.Web.HttpApplication

        Protected Sub Application_Start(ByVal sender As Object, ByVal e As EventArgs)
            ReportDesignerBootstrapper.SessionState = SessionStateBehavior.Required
            WebDocumentViewerBootstrapper.SessionState = SessionStateBehavior.Required
            QueryBuilderBootstrapper.SessionState = System.Web.SessionState.SessionStateBehavior.Required
            ' ...
            DefaultReportDesignerContainer.RegisterDataSourceWizardConfigFileJsonConnectionStringsProvider()
            DefaultReportDesignerContainer.RegisterDataSourceWizardJsonConnectionStorage(Of CustomDataSourceWizardJsonDataConnectionStorage)(True)
            DefaultWebDocumentViewerContainer.Register(Of IJsonDataConnectionProviderFactory, CustomJsonDataConnectionProviderFactory)()
            DefaultQueryBuilderContainer.Register(Of IJsonDataConnectionProviderFactory, CustomJsonDataConnectionProviderFactory)()
        ' ...
        End Sub
    ' ...
    End Class
End Namespace

A user specifies credentials in the JSON Data Wizard to connect to the JSON data source. When the Wizard is finished, credentials are encrypted and saved. A malicious user can specify various credentials and analyze the encrypted result in an attempt to find the cryptographic key. The connection storage prevents a malicious user from accessing the encrypted credentials used in the data source connection string.