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TUniFileUploadButton主要属性：

Filter: 文件类型过滤，有图片image/*   audio/* video/*三种过滤

MaxAllowedSize: 设置文件最大上传尺寸；

Message：标题以及消息文本，可翻译成中文

TUniFileUploadButton控件 支持多文件批量上传! 

procedure TMainForm.UniFileUploadButton1Completed(Sender: TObject;  AStream: TFileStream);
vari:integer;
beginUniFileUploadButton1.MultipleFiles:=True;//多选 模式  UniFileUploadButton1.MaxFiles:=4;         //最大文件数for I := 0 to UniFileUploadButton1.MaxFiles-1 do  begincaption:= UniFileUploadButton1.Files[i].FileName ;end;
end;

如果文件数超过MaxFiles

 事件：OnCompleted(Sender: TObject; AStream: TFileStream)

procedure TMainForm.UniFileUploadButton1Completed(Sender: TObject;  AStream: TFileStream);
varDestName : string;DestFolder : string;
begin//将 文件 加载到  UniImage1里UniImage1.Picture.LoadFromFile(AStream.FileName);Caption:='File Name: '+UniFileUploadButton1.FileName;//将 文件 保存到UploadFolder文件夹，先要创建这个UploadFolder文件夹DestFolder:=UniServerModule.StartPath+'UploadFolder\';   //要在与exe同下新建一个UploadFolder文件夹DestName:=DestFolder+ExtractFileName(UniFileUploadButton1.FileName);CopyFile(PChar(AStream.FileName), PChar(DestName), False);ShowMessage('File: '+UniFileUploadButton1.FileName+' Uploaded to folder: '+DestFolder);end;