WebApplication.cs

using System;
using DevExpress.ExpressApp;
using System.ComponentModel;
using DevExpress.ExpressApp.Web;
using System.Collections.Generic;
using DevExpress.ExpressApp.Xpo;

namespace CustomizeNewActionItemsListExample.Web {
    // For more typical usage scenarios, be sure to check out https://documentation.devexpress.com/eXpressAppFramework/DevExpressExpressAppWebWebApplicationMembersTopicAll.aspx
    public partial class CustomizeNewActionItemsListExampleAspNetApplication : WebApplication {
        private DevExpress.ExpressApp.SystemModule.SystemModule module1;
        private DevExpress.ExpressApp.Web.SystemModule.SystemAspNetModule module2;
        private CustomizeNewActionItemsListExample.Module.CustomizeNewActionItemsListExampleModule module3;
        
        public CustomizeNewActionItemsListExampleAspNetApplication() {
            InitializeComponent();
            LinkNewObjectToParentImmediately = false;
            DevExpress.ExpressApp.Web.Editors.ASPx.ASPxGridListEditor.AllowFilterControlHierarchy = true;
            DevExpress.ExpressApp.Web.Editors.ASPx.ASPxGridListEditor.MaxFilterControlHierarchyDepth = 3;
            DevExpress.ExpressApp.Web.Editors.ASPx.ASPxCriteriaPropertyEditor.AllowFilterControlHierarchyDefault = true;
            DevExpress.ExpressApp.Web.Editors.ASPx.ASPxCriteriaPropertyEditor.MaxHierarchyDepthDefault = 3;
        }
        protected override void CreateDefaultObjectSpaceProvider(CreateCustomObjectSpaceProviderEventArgs args) {
            args.ObjectSpaceProvider = new XPObjectSpaceProvider(GetDataStoreProvider(args.ConnectionString, args.Connection), true);
            args.ObjectSpaceProviders.Add(new NonPersistentObjectSpaceProvider(TypesInfo, null));
        }
        private IXpoDataStoreProvider GetDataStoreProvider(string connectionString, System.Data.IDbConnection connection) {
            System.Web.HttpApplicationState application = (System.Web.HttpContext.Current != null) ? System.Web.HttpContext.Current.Application : null;
            IXpoDataStoreProvider dataStoreProvider = null;
            if(application != null && application["DataStoreProvider"] != null) {
                dataStoreProvider = application["DataStoreProvider"] as IXpoDataStoreProvider;
            }
            else {
                dataStoreProvider = XPObjectSpaceProvider.GetDataStoreProvider(connectionString, connection, true);
                if(application != null) {
                    application["DataStoreProvider"] = dataStoreProvider;
                }
            }
			return dataStoreProvider;
        }
        private void CustomizeNewActionItemsListExampleAspNetApplication_DatabaseVersionMismatch(object sender, DevExpress.ExpressApp.DatabaseVersionMismatchEventArgs e) {
            e.Updater.Update();
            e.Handled = true;
        }
        private void InitializeComponent() {
            this.module1 = new DevExpress.ExpressApp.SystemModule.SystemModule();
            this.module2 = new DevExpress.ExpressApp.Web.SystemModule.SystemAspNetModule();
            this.module3 = new CustomizeNewActionItemsListExample.Module.CustomizeNewActionItemsListExampleModule();
            ((System.ComponentModel.ISupportInitialize)(this)).BeginInit();
            // 
            // CustomizeNewActionItemsListExampleAspNetApplication
            // 
            this.ApplicationName = "CustomizeNewActionItemsListExample";
            this.CheckCompatibilityType = DevExpress.ExpressApp.CheckCompatibilityType.DatabaseSchema;
            this.Modules.Add(this.module1);
            this.Modules.Add(this.module2);
            this.Modules.Add(this.module3);
            this.DatabaseVersionMismatch += new System.EventHandler<DevExpress.ExpressApp.DatabaseVersionMismatchEventArgs>(this.CustomizeNewActionItemsListExampleAspNetApplication_DatabaseVersionMismatch);
            ((System.ComponentModel.ISupportInitialize)(this)).EndInit();

        }
    }
}