how to check if textbox value is a multiple of a field in a database
I am using VB.Net 2005 SP1 Compact Framework 2.0 with MS SQL Server 2005 Compact.
I have a textbox called txtD that only accepts integers. I need to know how to compare that value to a value in field t_adc in tblTally and determine if txtD is a multiple of t_adc.
for example if t_adc = 3 then txtD would have to be 3, 6, 9, 12, 15 ...etc to be valid.
another example if t_adc = 2 then txtD would have to be 2, 4, 5, 8, 10...etc to be valid
How would I do that? See my code below to help me finish it off. I left a message where I need help.
Thanks
PBLack
Dim ssceconn As New SqlCeConnection("Data Source = \Program Files\data\products.sdf"
Dim readerCT As SqlCeDataReader
Dim cmdCT As New SqlCeCommand("SELECT t_adc FROM tblTally WHERE t_albl = 'Spec'", ssceconn)
Dim dc As Integer
ssceconn.Open()
readerCT = cmdCT.ExecuteReader
While readerCT.Read
dc = CInt(readerCT.Item("t_adc"
End While
' Close the connection
readerCT.Close()
readerCT.Dispose()
readerCT = Nothing
ssceconn.Close()
ssceconn.Dispose()
ssceconn = Nothing
If txtD.Text is multiple of dc Then ' THIS IS WHERE I NEED HELP
MsgBox("Valid Entry.")
End If
I have a textbox called txtD that only accepts integers. I need to know how to compare that value to a value in field t_adc in tblTally and determine if txtD is a multiple of t_adc.
for example if t_adc = 3 then txtD would have to be 3, 6, 9, 12, 15 ...etc to be valid.
another example if t_adc = 2 then txtD would have to be 2, 4, 5, 8, 10...etc to be valid
How would I do that? See my code below to help me finish it off. I left a message where I need help.
Thanks
PBLack
Dim ssceconn As New SqlCeConnection("Data Source = \Program Files\data\products.sdf"
Dim readerCT As SqlCeDataReader
Dim cmdCT As New SqlCeCommand("SELECT t_adc FROM tblTally WHERE t_albl = 'Spec'", ssceconn)
Dim dc As Integer
ssceconn.Open()
readerCT = cmdCT.ExecuteReader
While readerCT.Read
dc = CInt(readerCT.Item("t_adc"
End While
' Close the connection
readerCT.Close()
readerCT.Dispose()
readerCT = Nothing
ssceconn.Close()
ssceconn.Dispose()
ssceconn = Nothing
If txtD.Text is multiple of dc Then ' THIS IS WHERE I NEED HELP
MsgBox("Valid Entry.")
End If
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You can create a new ArrayList, then fill it in your loop (all the possible values for your combination) and then compare if it mach. Look this simple example:
Dim myArray As New ArrayList
' You loop with all possible values for your combination
While readerCT.Read
myArray.Add(YourValue)
End While
' Compare
If myArray.Contains(txtD.Text
MsgBox("ok")
End If
myArray = Nothing
Try this:
If Val(txtD.Text) Mod 2 = 0 Then ' THIS IS WHERE I NEED HELP
MsgBox("Valid Entry.")
Else
MsgBox("inValid Entry.")
End If