二开案例.打开【附件图片在线预览】界面

实现效果：

插件代码：

using Kingdee.BOS.App.Data;
using Kingdee.BOS.Core;
using Kingdee.BOS.Core.Bill.PlugIn;
using Kingdee.BOS.Core.DynamicForm.PlugIn.Args;
using Kingdee.BOS.Core.FileServer;
using Kingdee.BOS.Orm.DataEntity;
using Kingdee.BOS.ServiceHelper;
using Kingdee.BOS.ServiceHelper.FileServer;
using System.Collections.Generic;
using System.Linq;

namespace Test202411
{
    [Kingdee.BOS.Util.HotUpdate]
    public class 弹出图片预览窗口 : AbstractBillPlugIn
    {
        public override void ButtonClick(ButtonClickEventArgs e)
        {
            var currentIndex = 0;   //打开第几页
            var _isCanDownload = true;  //是否允许下载    
            var _isCanOnLinePrint = true;   //是否允许打印

            //需要预览的文件
            var fileInfos = new List<FilePreviewInfo> { };
            var fileIds = DBUtils.ExecuteDynamicObject(this.Context, "select top 10 FFILEID from T_BAS_ATTACHMENT where FATTACHMENTNAME like '%.jpg'")
                .Select(dyo => dyo["FFILEID"].ToString()).ToArray();
            foreach (var fileId in fileIds)
            {
                fileInfos.Add(new FilePreviewInfo(FilePreviewType.FileId, fileId));
            }

            //生成预览参数
            Kingdee.BOS.Core.FileServer.FilePreviewArgs args = new Kingdee.BOS.Core.FileServer.FilePreviewArgs()
                                .SetArgs(this.View, currentIndex, BosPlatformParameter)
                                .SetAuth(_isCanDownload, _isCanOnLinePrint);
            //弹出预览窗口
            FileServerHelper.PreviewFile(args, fileInfos);

        }

        private DynamicObject _bosPlatformParameter;
        /// <summary>
        /// BOS平台参数设置。
        /// </summary>
        private DynamicObject BosPlatformParameter
        {
            get
            {
                if (_bosPlatformParameter == null)
                {
                    _bosPlatformParameter = SystemParameterServiceHelper.Load(this.Context, 0, 0, FormIdConst.BOS_PlatformParameter);
                }
                return _bosPlatformParameter;
            }
        }

    }
}