1】创建文件夹
//相对路径
string FilePath = Server.MapPath("./") + "ImageFile/Images/" + DateTime.Now.Year.ToString() + "Year/" + DateTime.Now.Month.ToString() + "Month/";
DirectoryInfo di = new DirectoryInfo(FilePath);
if (!di.Exists)//如果没有就创建
{di.Create();}
//绝对路径
string receivePath = @"C:/ImageFile/Images/" + DateTime.Now.Year.ToString() + "Year/" + DateTime.Now.Month.ToString() + "Month/";
DirectoryInfo di = new DirectoryInfo(receivePath);
if (!di.Exists)
{
di.Create();
}
2】分割字符串
var getStr = Str.Split(new string[] { "$tempId$" }, StringSplitOptions.None);
3】去除字符串中，指定字符的最后一个
string Name ="asdsa,asdsa,21321,"
Name = Name .TrimEnd(',');
//输出之后
asdsa,asdsa,