急，截取问题。

Question

Granite/0.jpg
我想把，斜杠前面的字符不要，只要0.jpg，我用theEntry.Name.Substring(0,theEntry.Name.IndexOf('/')） 这样实现出来的效果是，把/后面的截取掉了，要怎么把斜杠前面的字符截取掉，大虾们，帮帮忙。

Answer 1

theEntry.Name.Substring(theEntry.Name.LastIndexOf('/'),theEntry.Name.length-theEntry.Name.LastIndexOf('/')）
差不多这样子~

Answer 2

1楼theEntry.Name.Substring(theEntry.Name.LastIndexOf('/'),theEntry.Name.length-theEntry.Name.LastIndexOf('/')）  length 不可以减string类型，谢谢

Answer 3

        string str = "Granite/0.jpg";
        str = str.Substring(str.IndexOf("/")+1);//截后面
        //str = str.Substring(0,str.IndexOf("/") - 1); //截前面
        Response.Write(str);

Answer 4

代码贴出来好了，我是做打包上传的
。cs 文件
 if (FileUpload1.HasFile)
        {
            try
            {
                string filePath = Server.MapPath(@"~/ChinaPhoto/CaseImg") + "/" + FileUpload1.FileName; //上传的压缩文件保存的路径
                string file1 = FileUpload1.FileName;
                string file2 = file1.Substring(0, file1.LastIndexOf("."));                string geshi = file1.Substring(file1.LastIndexOf("."));
                if (geshi == ".zip" || geshi == ".dat")
                {
                    string file = Server.MapPath(@"~/ChinaPhoto/CaseImg") + "\\" + file2;
                    //上传到本地
                    if (FileUpload1.HasFile)
                    {
                        FileUpload1.SaveAs(filePath);
                    }
                    //1.上传文件名称，作为导航名称
                    //2.判断导航名称是否存在,
                    //2.1如果不存在，就添加。
                    //2.2如果存在，就导入目录，把图片导入文件夹，数据录入数据库。
                    string sql = "Select * from AASSDD where Type='" + file2 + "'";
                    OleDbDataAdapter dr = new OleDbDataAdapter(sql, con);
                    DataSet ds = new DataSet();
                    dr.Fill(ds);
                    if (ds.Tables[0].Rows.Count > 0)
                    {
                        UnZipClass UnZip = new UnZipClass();
                        UnZip.UnZip(filePath, filePath.Substring(0, filePath.LastIndexOf('.')), Convert.ToInt32(ds.Tables[0].Rows[0]["PKID"]));
                    }
                    else
                    {
                        string intosql = "insert into AASSDD(Type,Yc)values('" + file2 + "'," + 0 + ")";
                        OleDbCommand com = new OleDbCommand(intosql, con);
                        con.Open();
                        int i = Convert.ToInt32(com.ExecuteNonQuery());
                        con.Close();
                        string topSql = "select top 1 PKID from AASSDD order by PKID DESC";
                        OleDbCommand Topcom = new OleDbCommand(topSql, con);
                        con.Open();
                        string itme = Topcom.ExecuteScalar().ToString();
                        con.Close();
                        UnZipClass UnZip = new UnZipClass();
                        UnZip.UnZip(filePath, filePath.Substring(0, filePath.LastIndexOf('.')), Convert.ToInt32(itme));
                        this.Label1.Text = "上传成功";
                        this.Label1.ForeColor = Color.Red;
                    }                }
                else
                {
                    this.Label1.Text = "文件格式不正确";
                    this.Label1.ForeColor = Color.Red;
                }            }
            catch (Exception ex)
            {
                throw ex;
            }
        }
        else
        {
            this.Label1.Text = "请选择文件";
            this.Label1.ForeColor = Color.Red;
        }
    }
    public string ReplaceTh(string Name)
    {
        return Name.Replace(" ", "-");
    }调用类：
OleDbConnection con = DBHlepr.CreateDB();
    public void UnZip(string zipfilepath, string unzippath,int ID)
    {
        ZipInputStream s = new ZipInputStream(File.OpenRead(zipfilepath));        ZipEntry theEntry;
        while ((theEntry = s.GetNextEntry()) != null)
        {
            string directoryName = Path.GetDirectoryName(unzippath);
            string fileName = Path.GetFileName(theEntry.Name);            //生成解压目录
            Directory.CreateDirectory(directoryName);            if (fileName != String.Empty)
            {
                //如果文件的压缩后大小为0那么说明这个文件是空的,因此不需要进行读出写入
                if (theEntry.CompressedSize == 0)
                    break;
                //解压文件到指定的目录
                //directoryName = Path.GetDirectoryName(unzippath + theEntry.Name.Substring(theEntry.Name.LastIndexOf('/'), theEntry.Name.length - theEntry.Name.LastIndexOf('/')));
                directoryName = Path.GetDirectoryName(unzippath + theEntry.Name.Substring(theEntry.Name.IndexOf("/") - 1));
                //建立下面的目录和子目录
                Directory.CreateDirectory(directoryName);                FileStream streamWriter = File.Create(unzippath + theEntry.Name);                int size = 2048;
                byte[] data = new byte[2048];
                while (true)
                {
                    size = s.Read(data, 0, data.Length);
                    if (size > 0)
                    {
                        streamWriter.Write(data, 0, size);
                    }
                    else
                    {
                        break;
                    }
                }
                string sql = "insert into Products(ProductsName,ProductsUrl,Productstype)values('" + fileName + "','" +ReplaceTh(theEntry.Name.ToString()) + "'," + ID + ")";
                OleDbCommand com=new OleDbCommand (sql,con);
                con.Open();
                com.ExecuteNonQuery();
                con.Close();
                streamWriter.Close();
            }
        }
        s.Close();
    }
    public string ReplaceTh(string Name)
    {
        return Name.Replace(" ", "-");
    }

Answer 5

 int i = aa.LastIndexOf("/");
        String NewName = aa.Substring(i + 1);
        Response.Write(NewName);
这样就简单的搞定了

Answer 6

调用类里面：directoryName = Path.GetDirectoryName(unzippath + theEntry.Name.Substring(theEntry.Name.IndexOf("/") - 1)); 我是想截取0.jpg 前面的数据，因为，我不截取，解压出来的文件夹名称，回显示2个名称

Answer 7

其实楼主真正需要的是将一个路径的文件名截取出来。请可以考虑用 
string name=System.IO.Path.GetFileName("路径"); 当然用substring之类的也是可以的。

Answer 8

我不是的，我是解压出来的文件：比如1。zip 解压出来就是11的文件名称