扩展XAF模型信息实现自定义功能

Posted 2020-06-20 foreach

如何隐藏 web listview 的 编辑控制列如下图: 这列怎么让它隐藏? 

感谢【少侠】XAF_杨东 提供解答!感谢XAF_小学生整理。

 

A: 注册自定义接口IModelListViewExtender 增加控制项 .

1、定义一个IModelListViewExtender接口。

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace ExpressApp.Extensions.Common
{
    public interface IModelWebListViewExtender
    {
        bool HiddenCommandColumn { get; set; }
    }
}

2、到XAF的web工程中注册这个扩展。

using System;
using System.Linq;
using System.Text;
using System.ComponentModel;
using DevExpress.ExpressApp;
using DevExpress.ExpressApp.DC;
using System.Collections.Generic;
using DevExpress.ExpressApp.Model;
using DevExpress.ExpressApp.Editors;
using DevExpress.ExpressApp.Actions;
using DevExpress.ExpressApp.Updating;
using DevExpress.ExpressApp.Model.Core;
using DevExpress.ExpressApp.Model.DomainLogics;
using DevExpress.ExpressApp.Model.NodeGenerators;
using DevExpress.Persistent.BaseImpl;
using ExpressApp.Extensions.Common;

namespace 资产管理.Module.Web {
    [ToolboxItemFilter("Xaf.Platform.Web")]
    // For more typical usage scenarios, be sure to check out https://documentation.devexpress.com/eXpressAppFramework/clsDevExpressExpressAppModuleBasetopic.aspx.
    public sealed partial class 资产管理AspNetModule : ModuleBase {
        private void Application_CreateCustomModelDifferenceStore(Object sender, CreateCustomModelDifferenceStoreEventArgs e) {
        #if !DEBUG
            e.Store = new ModelDifferenceDbStore((XafApplication)sender, typeof(ModelDifference), true, "Web");
            e.Handled = true;
        #endif
        }
        private void Application_CreateCustomUserModelDifferenceStore(Object sender, CreateCustomModelDifferenceStoreEventArgs e) {
            e.Store = new ModelDifferenceDbStore((XafApplication)sender, typeof(ModelDifference), false, "Web");
            e.Handled = true;
        }
        public 资产管理AspNetModule() {
            InitializeComponent();
        }
        public override IEnumerable<ModuleUpdater> GetModuleUpdaters(IObjectSpace objectSpace, Version versionFromDB) {
            return ModuleUpdater.EmptyModuleUpdaters;
        }
        public override void Setup(XafApplication application) {
            base.Setup(application);
            application.CreateCustomModelDifferenceStore += Application_CreateCustomModelDifferenceStore;
            application.CreateCustomUserModelDifferenceStore += Application_CreateCustomUserModelDifferenceStore;
            // Manage various aspects of the application UI and behavior at the module level.
        }
//增加这个方法：
        public override void ExtendModelInterfaces(ModelInterfaceExtenders extenders)
        {
            extenders.Add<IModelListView, IModelWebListViewExtender>();
            base.ExtendModelInterfaces(extenders);
        }
    }
}

3、打开web的xafml，配置

 

 

4、写一个Controller来处理这些配置项目

 GridViewCommandColumn 即选择操作的列

 

using System;
using DevExpress.ExpressApp;
using DevExpress.ExpressApp.Web.Editors.ASPx;
using DevExpress.Web;

namespace ExpressApp.Extensions.Common.Web.Controllers
{
    public partial class ListViewExtenderController : ViewController
    {
        public ListViewExtenderController()
        {
            InitializeComponent();
            RegisterActions(components);

            TargetViewType = ViewType.ListView;
        }

        protected override void OnDeactivated()
        {
            ListView view = (ListView)View;
            if (view.Editor == null || !(view.Editor is ASPxGridListEditor) || ((ASPxGridListEditor)view.Editor).Control == null ||
                !(((ASPxGridListEditor)view.Editor).Control is ASPxGridView) || view.Model == null || !(view.Model is IModelWebListViewExtender))
                return;

            ASPxGridView gridView = (ASPxGridView)view.Editor.Control;
            gridView.Load -= AdjustGridView;

            base.OnDeactivated();
        }

        void AdjustGridView(object sender, EventArgs e)
        {
            ListView view = (ListView)View;
            if (view.Editor == null || !(view.Editor is ASPxGridListEditor) || ((ASPxGridListEditor)view.Editor).Control == null ||
               !(((ASPxGridListEditor)view.Editor).Control is ASPxGridView) || view.Model == null || !(view.Model is IModelWebListViewExtender))
                return;

            ASPxGridView gridView = (ASPxGridView)view.Editor.Control;            
            IModelWebListViewExtender viewExtender = (IModelWebListViewExtender)view.Model;


            foreach (GridViewColumn c in gridView.Columns)
            {
                if (c is GridViewCommandColumn)
                {

                    c.Visible = !viewExtender.HiddenCommandColumn;
                }
                
            }
        }

        protected override void OnViewControlsCreated()
        {
            base.OnViewControlsCreated();

            ListView view = (ListView)View;
            if (view.Editor == null || !(view.Editor is ASPxGridListEditor) || ((ASPxGridListEditor)view.Editor).Control == null ||
               !(((ASPxGridListEditor)view.Editor).Control is ASPxGridView) || view.Model == null || !(view.Model is IModelWebListViewExtender))
                return;

            ASPxGridView gridView = (ASPxGridView)view.Editor.Control;
            gridView.Load += AdjustGridView;
        }
    }
}

完成