regular exression

[angela4eva]

I need to write a regular expression in vb.net
i have field whose vlue is stored in variable
var1
i want to make sure that the value is in the format
<text>.<text>ex:address.086
the regular expression must make sure that the value is in this format
that is check that the first part is a textfollowed by a period and then number,if the last part is like 086 then convert it to 86 if it is text like myname then it should give an error. help appreciated
thanks

 

[earthandfire]

you could try something like this:

  Private Sub Button5_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button5.Click

    CheckBox1.Checked = False
    Dim rx As New System.Text.RegularExpressions.Regex("[a-zA-Z]{1,}\.\d{1,}")
    Dim m As System.Text.RegularExpressions.Match = rx.Match(TextBox1.Text)
    CheckBox1.Checked = m.Success
    If m.Success Then
      TextBox1.Text = rx.Replace(TextBox1.Text, "\.0", ".")
    End If

  End Sub

Hope this helps.

 

[earthandfire]

A slight enhancement:

    CheckBox1.Checked = False
    Dim MainPattern As String = "[a-zA-Z]{1,}\.\d{1,}"
    Dim rx As New System.Text.RegularExpressions.Regex(MainPattern)
    Dim m As System.Text.RegularExpressions.Match = rx.Match(TextBox1.Text)
    If m.Success Then
      TextBox1.Text = rx.Replace(TextBox1.Text, "\.(0){1,}", ".")
      're-check to make sure that the number part didn't contain all 0s
      CheckBox1.Checked = rx.Match(TextBox1.Text, MainPattern).Success
    End If