MD5 加密

   temppsw = pubcls.StrTransfertoMD5(textBox6.Text.ToString());
                DataTable checkuser = new DataTable();
                checkuser = DB_RetriveDataTable(OraMgr_New, @"SELECT * FROM SFC.C_USER_T WHERE USER_ID ='" + textBox2.Text + @"' AND PASSWORD='" + temppsw + @"'");