tableadapter.update doesnt work

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C#

Windows

my code is like this

try
                {
studentTableAdapter1.Update(int.Parse(txtregno.Text), txtname.Text, txtaddresse.Text, txthomephone.Text,dateTimePicker1.Value, txtemail.Text, txtfathername.Text,txtfathercellphone.Text, txtfatherofficephone.Text, txtmothername.Text,txtmothercellphone.Text, txtresdinceaddresse.Text,
 dateTimePicker2.Value, txtadmittedby.Text,  txtprevschool.Text, txtreason.Text, DateTime.Now,  int.Parse(comboBoxclass.SelectedValue.ToString()),                        openFileDialog.SafeFileName, GENDER,  int.Parse(label13.Text), int.Parse(students.Regno), students.Names, students.Addresse,                  
students.Homephone, students.Dateofbirth, students.Email,                       
 students.Fathername, students.Fathercellphone, students.Fatherofficephone, students.Mothername,students.Mothercellphone, students.Resdinceaddresse,                 
students.Admissiondate, students.Admittedby,students.Prevschool, students.Reason,                      
 students.Lastmodifieddate, students.Classvalue,students.Image, students.Gender);
 pictureBox1.Image.Save(Application.StartupPath + @"\\images" + @"\" + openFileDialog.SafeFileName);
MessageBox.Show("DATA UPDATED SUCCESSFULY", " ", MessageBoxButtons.OK, MessageBoxIcon.Information);
   }
               catch
               {
                    MessageBox.Show("error");
               }

while

students.* 

is the original values and "GENDER" taken from some method
i have tried update it from another form with one called name.text like this

 studentTableAdapter1.Update(int.Parse(students.Regno),name.Text,students.Addresse,students.Homephone,students.Dateofbirth,students.Email, students.Fathername,                  students.Fathercellphone,students.Fatherofficephone,students.Mothername,
students.Mothercellphone,students.Resdinceaddresse,students.Admissiondate,students.Admittedby,students.Prevschool,students.Reason,students.Lastmodifieddate,students.Classvalue,students.Image,students.Gender,students.Id,int.Parse(students.Regno), students.Names,students.Addresse,students.Homephone,students.Dateofbirth,                       
students.Email,students.Fathername,students.Fathercellphone, students.Fatherofficephone,students.Mothername, students.Mothercellphone,                    students.Resdinceaddresse,students.Admissiondate,students.Admittedby,
students.Prevschool,students.Reason,students.Lastmodifieddate,students.Classvalue,
students.Image, students.Gender);

and its updated table sucessfully i dont no what to do ? please help?