C# WPF多页面间的数据共享(经典)

 public void SetData()        {            DataShareBase.SetData<string>(CommonConstant.OfficialAccount, "dotnet讲堂");            var loginViewModel = new LoginViewModel();            loginViewModel.UserInformation = new UserInformation()            {                UserName = "zls365",                Password = "abc123"            };            DataShareBase.SetData<LoginViewModel>(CommonConstant.LoginViewModelKey, loginViewModel);        }

  public void GetData()        {            string dynamicValue = DataShareBase.GetData<string>(CommonConstant.OfficialAccount);            DXMessageBox.Show(dynamicValue, CommonConstant.OfficialAccount, MessageBoxButton.OK, MessageBoxImage.Information);
            LoginViewModel dynamicObject = DataShareBase.GetData<LoginViewModel>(CommonConstant.LoginViewModelKey);            StringBuilder stringBuild = new StringBuilder();            stringBuild.AppendLine(dynamicObject.UserInformation.UserName);            stringBuild.AppendLine(dynamicObject.UserInformation.Password);
            DXMessageBox.Show(stringBuild.ToString(), CommonConstant.LoginViewModelKey, MessageBoxButton.OK, MessageBoxImage.Information);        }

using System;using System.Collections.Concurrent;
namespace Caliburn.Micro.Hello.Helper{    public class DataShareBase    {        private static readonly Common.Logging.ILog logger = Common.Logging.LogManager.GetLogger<DataShareBase>();        /// <summary>        /// Dynamic Data        /// </summary>        public static ConcurrentDictionary<string, object> DynamicData { get; set; } = new ConcurrentDictionary<string, object>();
        public static void SetData(string key, object value, bool isForceWrite = true)        {            logger.Info($"[SetData] Enter. Key = [{key}], Value = [{value}], isForceWrite = [{isForceWrite}]");
            if (DynamicData.Keys.Contains(key))            {                string logMsg = $"DynamicData key = {key} has existed in context.";                if (isForceWrite)                {                    DynamicData[key] = value;                }                else                {                    logger.Debug(logMsg);                }            }            try            {                DynamicData.TryAdd(key, value);            }            catch (Exception ex)            {                logger.Error($"[SetData] {ex}");            }
            logger.Info($"[SetData] Enter. Key = [{key}], Value = [{value}], isForceWrite = [{isForceWrite}]");        }
        public static void SetData<TData>(string key, TData value, bool isForceWrite = true)        {            SetData(key, (object)value, isForceWrite);        }

        public static TData GetData<TData>(string key)        {            logger.Debug($"Enter [GetData]. Key = {key}.");
            var data = GetData(key);
            if (!(data is TData))            {                string logMsg = $"In [GetData<TData>] DynamicData type is not [{typeof(TData)}].";                logger.Error(logMsg);                throw new Exception(logMsg);            }
            logger.Debug($"Enter [GetData]. Return {((TData)data).ToString()}.");
            return (TData)data;        }

        public static object GetData(string key)        {            if (!(DynamicData.Keys.Contains(key)))            {                string logMsg = $"In [GetData] DynamicData key = {key} not existed in context.";                logger.Error(logMsg);                throw new Exception(logMsg);            }
            object data = null;
            DynamicData.TryGetValue(key, out data);
            return data;        }
    }
}