Check if Textbox input is numeric

Hi ,

I am trying to check for a numeric input. I had this procedure in windows app and Im trying to put it in web but Im getting an error on
ctl.text in the code below

any ideas how I can correct this pleased.. Many thanks

VB Code:

Private Sub Submit_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Submit.Click
        Dim bLoop As Boolean = True
        Do While bLoop = True
            bLoop = False
            Dim ctl As Control
            For Each ctl In Me.Controls   'checks to see if all required textboxes have been completed
                If [B]Trim([COLOR=RoyalBlue]ctl.Text[/COLOR]) [/B] = "" And TypeOf ctl Is TextBox Then
                     Msgbox("Please make entry for " & ctl.ID.ToString)
                    bLoop = True
                End If
            Next
            Select Case False    'check for numeric entry
                Case CheckNumeric(txtmobile.Text)
                    txtmobile.Text = Not (IsNumeric("Mobile"))
                    bLoop = True
                Case CheckNumeric(HomeTel.Text)
                    HomeTel.Text = Not (IsNumeric("HomeTel"))
                    bLoop = True
            End Select
        Loop

I'm guessing its a build error? Its probably because the property "Text" does not belong to a generic control.

Rather than declaring ctl as a control, declare it as a textbox.

hi,

It's the case alright, clt.text is not a member.

Now I thought of insstead giving a message in a RequiredFieldValidator. I know you match it with the ControlToValidate. I need to know how to use them in something like this:

VB Code:

If Not ctl Is Nothing Then
                If ctl.Text.Length = 0 Then
                    (validator + ID).ToString.text = ("Please make entry for " & ctl.ID.ToString))
                End If

But its not the right syntax. can someone please correct me or guide for some insturctions on how it works.

Thanks

Why aren't you doing this at design time, on the page itself?

Mendhak, I dont know how to use the blessed required field validation! and I also want to check if all my textboxes are null, how can I??

Look at some tutorials.

http://www.devhood.com/tutorials/tut...tutorial_id=46

http://www.devarticles.com/c/a/ASP.N...tion-Controls/

Thanks for the info

Mendhak,

Those tutorials are very good. I have done a validation to my textboxes and they are working fine. There is two thing I need to clear but

1. How do I validate that its a valid email address ?

2. Since I have done these validations the data is not going into my database any longer. Am I missing something??

Angelica,

You can write a regular expression to validate your email addresses

or just look for the basic construsctors i.e. must contain the @ then a dot(.)
if you do a search on this forum or the web I'm sure you'll find some prewritten ones

showThread

The regular expression would look like:

[\w\_\.]+@[\w\_]+.(?:com|org|net)