为什么这两个值不一样？

[zhuyike]

那个if (str==pwdstr)中的两个值不知道为什么就是一直不一样。。。但是我RESPONSE出来的值是一样的。。。
str，pwdstr两个值是经过MD5加密过的。。。。

        string str = "";
        string pwdstr= FormsAuthentication.HashPasswordForStoringInConfigFile(TextBox2.Text.ToString(), "md5");
        OleDbConnection acccon = new OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + Server.MapPath("./bfjDB/bfj.mdb").ToString());
        string selectCmd = "select * from login where Username='" + TextBox1.Text.ToString() + "'";
        OleDbCommand acccom = new OleDbCommand(selectCmd, acccon);
        acccon.Open();
        OleDbDataReader dr = acccom.ExecuteReader();
        Response.Write(pwdstr);
        while (dr.Read())
        {
            str = dr["Password"].ToString();
            Response.Write("<br>"+str);
        }
        dr.Close();
        acccon.Close();
        if (str==pwdstr)
        {
            string PWD = FormsAuthentication.HashPasswordForStoringInConfigFile(TextBox3.Text.ToString(), "md5");
            string updateCmd = "update [login] set [Password]='"+PWD+"' where Username='" + TextBox1.Text.Trim().ToString() + "'";
            OleDbCommand insertcom = new OleDbCommand(updateCmd, acccon);
            acccon.Open();
            insertcom.ExecuteNonQuery();
            acccon.Close();
            Response.Write("<script language=JavaScript> alert('修改密码成功！');</script>");
        }
        else
        {
            Response.Write("<script language=JavaScript> alert('用户名或密码错误！');</script>");
        }

[milo4210]

你确保你的 pwdstr 也是同样的密码 ？

[milo4210]

if(str.Trim() == pwdstr.Trim()) 试一下