WPF聊天室应用(ASP.NET Core SignalR)

https://www.bilibili.com/video/BV1Q741187Si?p=2

https://www.bilibili.com/video/BV1UV411e75T?from=search&seid=6704082708608087525

https://www.bilibili.com/video/BV1yt4y1D7EX/?spm_id_from=autoNext

過濾上傳的檔案

 程式範例

https://drive.google.com/file/d/1N0SLrZAR4l97OiUw_McvTdYtBt4bEOUw/view?usp=sharing

參考資料:

https://codertw.com/%E5%89%8D%E7%AB%AF%E9%96%8B%E7%99%BC/219918/

https://xyz.cinc.biz/2013/12/c-sharp-read-file.html