I have already posted this topic before but I still encounter an error.
I don't how use Update with dataAdapter so I've tried this to save my records.

//Save
DataRow row = dataSet11.Student.NewStudentRow();
row.ItemArray[0] = textBox1.Text;
row.ItemArray[1] = textBox2.Text;
row.ItemArray[2] = textBox3.Text;
row.ItemArray[3] = textBox4.Text;
dataSet11.Student.AddStudentRow(row);
dataSet11.AcceptChanges();

Kindly correct the error for me.