Hi,
I needed some help on how to add Validation on text boxes. I wanted validation such as only adding numbers, or max 7 characters for postcode, etc.
I wanted a validation on postcode so that if the correct format doesn't appear (ex, LE5 7LD) then a message box would come up saying format incorrect or something.
I also needed help on making sure a text box is not left blank, and if it is, a error comes up when "Submit" is clicked?
I've tried googline, but couldnt find nothing similar.
Thanks.
Is this a windows or web app?
Is this a windows or web app?
Its a Windows App
this is all of my coding:
Public Class frmcustomer
Dim MaxRows As Integer
Dim inc As Integer
'Define connection variables here
Dim con As New OleDb.OleDbConnection
Dim ds As New DataSet
Dim da As OleDb.OleDbDataAdapter
Dim sql As String
Private Sub form_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
con.ConnectionString = "PROVIDER=Microsoft.Jet.OLEDB.4.0;Data Source = E:\Unit 14\Task B\MyData\SuperTronicsWorld.mdb"
con.Open()
sql = "SELECT * FROM tblCustomer"
da = New OleDb.OleDbDataAdapter(sql, con)
da.Fill(ds, "SuperTronicsWorld")
con.Close()
txtcustid.Text = ds.Tables("SuperTronicsWorld").Rows(0).Item(0)
cbotitle.Text = ds.Tables("SuperTronicsWorld").Rows(0).Item(1)
txtfirstname.Text = ds.Tables("SuperTronicsWorld").Rows(0).Item(2)
txtsurname.Text = ds.Tables("SuperTronicsWorld").Rows(0).Item(3)
txtcompanyname.Text = ds.Tables("SuperTronicsWorld").Rows(0).Item(4)
txtfirstlineadd.Text = ds.Tables("SuperTronicsWorld").Rows(0).Item(5)
txtsecondlineadd.Text = ds.Tables("SuperTronicsWorld").Rows(0).Item(6)
txtcity.Text = ds.Tables("SuperTronicsWorld").Rows(0).Item(7)
txtpostcode.Text = ds.Tables("SuperTronicsWorld").Rows(0).Item(8)
txtcountry.Text = ds.Tables("SuperTronicsWorld").Rows(0).Item(9)
txttelno.Text = ds.Tables("SuperTronicsWorld").Rows(0).Item(10)
lstbank.Text = ds.Tables("SuperTronicsWorld").Rows(0).Item(11)
txtaccno.Text = ds.Tables("SuperTronicsWorld").Rows(0).Item(12)
MaxRows = ds.Tables("SuperTronicsWorld").Rows.Count
inc = 0
End Sub
Private Sub Navigaterecords()
txtcustid.Text = ds.Tables("SuperTronicsWorld").Rows(inc).Item(0)
cbotitle.Text = ds.Tables("SuperTronicsWorld").Rows(inc).Item(1)
txtfirstname.Text = ds.Tables("SuperTronicsWorld").Rows(inc).Item(2)
txtsurname.Text = ds.Tables("SuperTronicsWorld").Rows(inc).Item(3)
txtcompanyname.Text = ds.Tables("SuperTronicsWorld").Rows(inc).Item(4)
txtfirstlineadd.Text = ds.Tables("SuperTronicsWorld").Rows(inc).Item(5)
txtsecondlineadd.Text = ds.Tables("SuperTronicsWorld").Rows(inc).Item(6)
txtcity.Text = ds.Tables("SuperTronicsWorld").Rows(inc).Item(7)
txtpostcode.Text = ds.Tables("SuperTronicsWorld").Rows(inc).Item(8)
txtcountry.Text = ds.Tables("SuperTronicsWorld").Rows(inc).Item(9)
txttelno.Text = ds.Tables("SuperTronicsWorld").Rows(inc).Item(10)
lstbank.Text = ds.Tables("SuperTronicsWorld").Rows(inc).Item(11)
txtaccno.Text = ds.Tables("SuperTronicsWorld").Rows(inc).Item(12)
End Sub
Private Sub btnfirst_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnfirst.Click
If inc <> 0 Then
inc = 0
Navigaterecords()
End If
End Sub
Private Sub btnLast_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnLast.Click
If inc <> MaxRows - 1 Then
inc = MaxRows - 1
Navigaterecords()
End If
End Sub
Private Sub btnprevious_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnprevious.Click
If inc > 0 Then
inc = inc - 1
Navigaterecords()
ElseIf inc = -1 Then
MsgBox("No Records Yet")
ElseIf inc = 0 Then
MsgBox("First Record")
End If
End Sub
Private Sub btnnext_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnnext.Click
If inc <> MaxRows - 1 Then
inc = inc + 1
Navigaterecords()
Else
MsgBox("No more rows")
End If
End Sub
Private Sub btnedit_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnedit.Click
Dim cb As New OleDb.OleDbCommandBuilder(da)
ds.Tables("SuperTronicsWorld").Rows(inc).Item(0) = txtcustid.Text
ds.Tables("SuperTronicsWorld").Rows(inc).Item(1) = cbotitle.Text
ds.Tables("SuperTronicsWorld").Rows(inc).Item(2) = txtfirstname.Text
ds.Tables("SuperTronicsWorld").Rows(inc).Item(3) = txtsurname.Text
ds.Tables("SuperTronicsWorld").Rows(inc).Item(4) = txtcompanyname.Text
ds.Tables("SuperTronicsWorld").Rows(inc).Item(5) = txtfirstlineadd.Text
ds.Tables("SuperTronicsWorld").Rows(inc).Item(6) = txtsecondlineadd.Text
ds.Tables("SuperTronicsWorld").Rows(inc).Item(7) = txtcity.Text
ds.Tables("SuperTronicsWorld").Rows(inc).Item(8) = txtpostcode.Text
ds.Tables("SuperTronicsWorld").Rows(inc).Item(9) = txtcountry.Text
ds.Tables("SuperTronicsWorld").Rows(inc).Item(10) = txttelno.Text
ds.Tables("SuperTronicsWorld").Rows(inc).Item(11) = lstbank.Text
ds.Tables("SuperTronicsWorld").Rows(inc).Item(12) = txtaccno.Text
da.Update(ds, "SuperTronicsWorld")
MsgBox("Data Updated")
End Sub
Private Sub btnadd_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnadd.Click
'enabling/disabling buttons
btnsave.Enabled() = True
btnadd.Enabled = False
btnedit.Enabled = False
btndelete.Enabled = False
'clearing the fields
txtcustid.Clear()
'cbotitle.clear()
txtfirstname.Clear()
txtsurname.Clear()
txtcompanyname.Clear()
txtfirstlineadd.Clear()
txtsecondlineadd.Clear()
txtcity.Clear()
txtpostcode.Clear()
txtcountry.Clear()
txttelno.Clear()
'lstbank.clear()
txtaccno.Clear()
End Sub
Private Sub btnsave_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnsave.Click
If inc <> -1 Then
Dim cb As New OleDb.OleDbCommandBuilder(da)
Dim dsnewrow As DataRow
' InputBox("Please Enter your password to continue to save this record", "Confirmation", "Enter Your Password Here")
dsnewrow = ds.Tables("SuperTronicsWorld").NewRow()
dsnewrow.Item("CustomerID") = txtcustid.Text
dsnewrow.Item("Title") = cbotitle.Text
dsnewrow.Item("FirstName") = txtfirstname.Text
dsnewrow.Item("LastName") = txtsurname.Text
dsnewrow.Item("CompanyName") = txtcompanyname.Text
dsnewrow.Item("Firstlineaddress") = txtfirstlineadd.Text
dsnewrow.Item("Secondlineaddress") = txtsecondlineadd.Text
dsnewrow.Item("City") = txtcity.Text
dsnewrow.Item("PostCode") = txtpostcode.Text
dsnewrow.Item("Country") = txtcountry.Text
dsnewrow.Item("TelNo") = txttelno.Text
dsnewrow.Item("Banknane") = lstbank.Text
dsnewrow.Item("Accountnumber") = txtaccno.Text
ds.Tables("SuperTronicsWorld").Rows.Add(dsnewrow)
da.Update(ds, "SuperTronicsWorld")
MsgBox("New Record Successfully appended to the Database!")
btnsave.Enabled() = False
btnadd.Enabled = True
btnedit.Enabled = True
btndelete.Enabled = True
End If
End Sub
Private Sub btndelete_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btndelete.Click
Dim cb As New OleDb.OleDbCommandBuilder(da)
'message to promt for deletion first
If MessageBox.Show("Are you sure you want to delete this Record?", "Delete", MessageBoxButtons.YesNo, MessageBoxIcon.Warning) = DialogResult.No Then
MsgBox("Operation Cancelled")
Exit Sub
End If
ds.Tables("SuperTronicsWorld").Rows(inc).Delete()
MaxRows = MaxRows - 1
inc = 0
da.Update(ds, "SuperTronicsWorld")
Navigaterecords()
btnsave.Enabled() = False
btnadd.Enabled = True
btnedit.Enabled = True
btndelete.Enabled = True
End Sub
Private Sub txtfirstname_TextChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles txtfirstname.TextChanged
End Sub
Private Sub MenuStrip1_ItemClicked(ByVal sender As System.Object, ByVal e As System.Windows.Forms.ToolStripItemClickedEventArgs) Handles MenuStrip1.ItemClicked
End Sub
Private Sub txtpostcode_TextChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles txtpostcode.TextChanged
End Sub
End ClassWe're a friendly, industry-focused community of developers, IT pros, digital marketers, and technology enthusiasts meeting, networking, learning, and sharing knowledge.