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string[] filepath = Directory.GetFiles(path);
foreach (string file in filepath)
{
if (fileOldName == fileNewName)
{
string time = GetUploadDateTime();
string[] strArray = file.Split(new char[] { '.' });
string str1 = strArray[0].ToString();
string str2 = strArray[1].ToString();
string newfilename = str1 + time + "." + str2;
System.IO.File.Move(file, newfilename);
break;
}
}
