I always got an error when adding a new data. the error says
String or binary data would be truncated. The statement has been terminated
As I've looked back on my backend or code. It looks like there's a conflict adding a TWO LABEL DATA
in one column because I would like to join the (Year)-(StudentNumber)
Here's the code of my INSERT INTO Statement
INSERT INTO
[Student_Information] (StudentID, LastName, FirstName, MiddleName, Gender,
ContactNumber, Citizenship, Religion, Birthday, Address)
VALUES
( '" & lbl_cyear.Text - studid.Text & "','" + txt_lname.Text + "', '" + txt_fname.Text + "', '" + txt_mname.Text + "', '" + DDGender.Text + "', '" & txt_cnumber.Text & "', '" & txt_citizenship.Text & "' , '" + txt_religion.Text + "' , '" & txt_bday.Text & "', '" & txt_address.Text & "' )"
and here's the code how I generate the Year and the Student Number
Sub SNYear()
Dim test As Date
test = Convert.ToDateTime(Today)
lbl_cyear.Text = test.Year
End Sub
Sub SNGenerate()
'displaying Studentid
Dim SN As Integer ' Student Number
Dim SID As String 'Student ID Num as String
Dim rdr As SqlDataReader
cmd1.Connection = cn
cmd1.Connection.Open()
cmd1.CommandText = "Select Max (StudentID) as expr1 from [Student_Information]"
rdr = cmd1.ExecuteReader
If rdr.HasRows = True Then
rdr.Read()
End If
If rdr.Item(0).ToString = Nothing Then
SN = rdr.Item(0) + 1
SID = Format(SN, "0000")
ElseIf rdr.Item(0).ToString = 0 Then
SN = rdr.Item(0) + 1
SID = Format(SN, "0000")
Else
SN = rdr.Item(0) + 1
SID = Format(SN, "0000")
End If
studid.Text = SID
cmd1.Connection.Close()
End Sub
Can someone help me with the code? How to join 2 data in different label text and save it to one column in my table.
Best Answer
Woah! Never ever write sql queries like that. It's subject to dangerous SQL injection, and code like that is actually used as worst-case scenarios in SQL injection lectures everywhere!
That being said, the error message String or binary data would be truncated. The statement has been terminated. actually spells out what is wrong. You are trying to insert too much data into a field that has a specific dimension.
You are trying to insert the following expression into the
StudentID
field:I'm not even sure what you want to do there. Since Visual Basic is loosely typed by default, It will probably handle the
lbl_cyear.Text
as a number and try to subtract thestudid.Text
(as a number) from it. You probably mean something like this:It seems you are trying to use the
StudentID
column for two different types of information. Don't do that. Decide on one format for the student ids and dimension the column for it.Is this a homework assignment?