每次上传文件时,我都需要在文件末尾添加一个增量编号。我差不多工作了。
请检查以下代码:
Dim intVersion As Integer = 1
While (System.IO.File.Exists(strDestinationPath))
Dim temp As Integer = ourFilename.LastIndexOf(".")
Dim temp2 As String = ourFilename.Substring(temp)
ourFilename = ourFilename.Replace(temp2, "_" & intVersion & temp2)
strDestinationPath = System.Configuration.ConfigurationManager.AppSettings("WebLocalContentDir") & "\VisualID\" & ourFilename
intVersion += 1
End While
如果我上传文件3次,则保存为,
第一次:VDFGH 第二次:VDFGH_1 第3次:VDFGH_1_2(预期输出为VDFGH_2)
答案 0 :(得分:1)
Dim intVersion As Integer = 1
While (System.IO.File.Exists(strDestinationPath))
Dim temp As Integer = ourFilename.LastIndexOf(".")
Dim temp2 As String = ourFilename.Substring(temp)
dim tempFileName as string = ourFilename.Replace(temp2, "_" & intVersion & temp2)
strDestinationPath = System.Configuration.ConfigurationManager.AppSettings("WebLocalContentDir") & "\VisualID\" & tempFileName
intVersion += 1
End While
很确定这会奏效。您正在更改原始文件名字符串,然后每次都进行修改。