feat(ButtonUpload): 多选文件后，无法取到选择的文件个数 #5329
Description
Is there an existing issue for this?
- I have searched the existing issues
Is your feature request related to a problem? Please describe the problem.
ButtonUpload组件在设置IsMultiple="true"后，多选文件，希望在UploadFile类中取到选择的文件个数。
Describe the solution you'd like
int count = UploadFile.FileCount;
Additional context
No response