Private void Button1_Click (Object Sender, System.Eventargs E)
{
String Professionalway = this.dropdownList1.selectedValue.trim (). Tostring ();
INT I, J, K;
// system.datetime datetime = datetime.parse ("8/6/1986");
DataSet DSPRO = TeachingRes.getProfessionalway (Professionalway, "," ");
INT pronum = dspro.tables [0] .Rows.count;
For (i = 0; i { String pro = dspro.tables [0] .rows [i] .ItemRay [0] .tostring (); String newstudentsn = Pro.trim () "000"; DataSet DSClass = TeachingRES.GetClass (Pro); INT classnum = dsclass.tables [0]. ROWS.COUNT; For (j = 0; j { String classno = dsclass.tables [0] .rows [j] .ItemRay [0] .tostring (); DataSet DSStudent = studentinfo.findstudent (", Classno,", ""); Int studentno = dsstudent.tables [0]. ROWS.COUNT; For (k = 0; k { INT SN = int32.Parse (newstudentsn) 1; Newstudentsn = sn.tostring (); // studentinfo.updatathast (newstudent,) String studentsn = dsstudent.tables [0] .rows [k] .ITEMARRAY [0] .tostring (); StudentInfo.updatathast (StudentSn, Newstudentsn, ",", ",", ",", ",", ",", ",", "," "" "", ",", "" "); } } }