上传图片的名称是怎么命名的？比如下面指南中的这个代码，上传到“员工”表格的的图片名称是依据原图片的名称命名的，也就是原来图片是abc.jpg，那么上传之后名称也是abc.jpg；

现在的问题是:（1）以后会不会再传一个图片，如果名称相同，就会把原来的覆盖掉呢？

（2）如果我要强制命名，比如：原来图片是abc.jpg，那么上传之后名称是“当天时间+abc.jpg；“     如20210807abc.jpg?

Dim wb As New weui
Select Case e.Path
    Case "addnew.htm"
        If e.PostValues.Count = 0 Then
            wb.AddForm("","form1","addnew.htm")
            With wb.AddInputGroup("form1","ipg1","增加员工")
                .AddInput("姓名","姓名","Text") \'前一个"姓名"是ID,后一个"姓名"是标题
                .AddInput("年龄","年龄","number")
                .AddSelect("学历","学历","大专|本科|硕士|博士")
                .AddUploader("up1","照片",True) \'True表示允许上传多个文件
            End With
            With wb.AddButtonGroup("form1","btg1",True)
                .Add("btn1", "确定", "submit")
            End With
            e.WriteString(wb.Build)
        Else
            Dim nms() As String = {"姓名","年龄","学历"}
            Dim dr As DataRow = DataTables("员工").AddNew()
            For Each nm As String In nms
                dr(nm) = e.PostValues(nm)
            Next
            For Each key As String In e.Files.Keys
                If key = "up1" Then
                    For Each fln As String In e.Files(key)
                        e.SaveFile(key, fln, ProjectPath & "Attachments\\" & fln)
                    Next
                    dr.Lines("照片") = e.Files(key)
                End If
            Next
            \'保存并生成增加成功提示页面
            dr.save()
            With wb.AddMsgPage("","msgpage","增加成功", "好好学习,天天向上") \'生成成功提示页
                .AddButton("btn1","继续增加","addnew.htm")
            End With
            e.WriteString(wb.Build)
        End If
End Select