jxharding
asked on
i cannot get a textbox to have a mask, i need to enter a currency value only into textbox
what i need to do is when a user enters a value, only let numerical values be entered into the textbox
ATTEMPT1
i have tried a good few examples, on this site, there is some source code but i cannot download the project for some reason
http://www.codeproject.com/vb/net/cpflexmaskeditbox.asp
ATTEMPT2
another question in experts exchange told the user to register "Microsoft Masked Edit Control, version 6.0""
but now what?
i dont see an extra property in the textboxes now
ATTEMPT3
and then bobjohnson187@??????.com posted this code in a post , and i made a class out of it but i dont know what to do next
'-------------------------
Public Class TextBoxNumeric
Inherits System.Windows.Forms.TextB
#Region " Windows Form Designer generated code "
Public Sub New()
MyBase.New()
'This call is required by the Windows Form Designer.
InitializeComponent()
'Add any initialization after the InitializeComponent() call
End Sub
'UserControl1 overrides dispose to clean up the component list.
Protected Overloads Overrides Sub Dispose(ByVal disposing As Boolean)
If disposing Then
If Not (components Is Nothing) Then
components.Dispose()
End If
End If
MyBase.Dispose(disposing)
End Sub
'Required by the Windows Form Designer
Private components As System.ComponentModel.ICon
'NOTE: The following procedure is required by the Windows Form Designer
'It can be modified using the Windows Form Designer.
'Do not modify it using the code editor.
<System.Diagnostics.Debugg
components = New System.ComponentModel.Cont
End Sub
#End Region
Dim m_IntegerOnly As Boolean
Dim m_PositiveOnly As Boolean
'<Description("If TRUE, only integers can be entered."), _
'Browsable(True), _
'Category("Validation"), _
'DefaultValue(False)> _
Property IntegerOnly() As Boolean
Get
Return m_IntegerOnly
End Get
Set(ByVal Value As Boolean)
m_IntegerOnly = Value
End Set
End Property
'<Description("If TRUE, only positive numbers can be entered."), _
'Browsable(True), _
'Category("Validation"), _
'DefaultValue(False)> _
Property PositiveOnly() As Boolean
Get
Return m_PositiveOnly
End Get
Set(ByVal Value As Boolean)
m_PositiveOnly = Value
End Set
End Property
Private Sub NumericTextBox_KeyPress(By
Dim KeyAscii As Integer
KeyAscii = Asc(e.KeyChar) ' NOTE: used as a flag when = 0 to mark bad values
Select Case KeyAscii
Case 48 To 57, 8, 13 ' Digits 0 - 9, Backspace, CR.
' These are OK, so accept them.
Case 45 ' Minus sign.
If PositiveOnly Then
KeyAscii = 0
Else
' Number can have only one minus sign, so if
' we already have one, throw this one away.
If InStr(Me.Text, "-") <> 0 Then
KeyAscii = 0
End If
' If the insertion point is not sitting at zero
' (i.e., the beginning of the field), throw away
' the minus sign because it's not valid anywhere
' but the first position
If Me.SelectionStart <> 0 Then
KeyAscii = 0
End If
End If
Case 46 ' Period (decimal point).
If IntegerOnly Then
KeyAscii = 0
Else
' If we already have one period, throw it away
If InStr(Me.Text, ".") <> 0 Then
KeyAscii = 0
End If
End If
Case Else ' Provide no handling for other keys.
KeyAscii = 0
End Select
' If we want to throw the keystroke away, then set the event
' as already handled. Otherwise, let the keystroke be
' handled normally.
If KeyAscii = 0 Then
e.Handled = True
Else
e.Handled = False
End If
End Sub
'-------------------------
ATTEMPT4
http://www.c-sharpcorner.com/Download.asp?file=/Code/2004/Jan/MaskedTextBoxJP.zip
but this is in C# and im doing vb.net, maybe there is still a way to use it if someone can help me
personally i would like to get option 2 or 3 working
thank you
ATTEMPT1
i have tried a good few examples, on this site, there is some source code but i cannot download the project for some reason
http://www.codeproject.com/vb/net/cpflexmaskeditbox.asp
ATTEMPT2
another question in experts exchange told the user to register "Microsoft Masked Edit Control, version 6.0""
but now what?
i dont see an extra property in the textboxes now
ATTEMPT3
and then bobjohnson187@??????.com posted this code in a post , and i made a class out of it but i dont know what to do next
'-------------------------
Public Class TextBoxNumeric
Inherits System.Windows.Forms.TextB
#Region " Windows Form Designer generated code "
Public Sub New()
MyBase.New()
'This call is required by the Windows Form Designer.
InitializeComponent()
'Add any initialization after the InitializeComponent() call
End Sub
'UserControl1 overrides dispose to clean up the component list.
Protected Overloads Overrides Sub Dispose(ByVal disposing As Boolean)
If disposing Then
If Not (components Is Nothing) Then
components.Dispose()
End If
End If
MyBase.Dispose(disposing)
End Sub
'Required by the Windows Form Designer
Private components As System.ComponentModel.ICon
'NOTE: The following procedure is required by the Windows Form Designer
'It can be modified using the Windows Form Designer.
'Do not modify it using the code editor.
<System.Diagnostics.Debugg
components = New System.ComponentModel.Cont
End Sub
#End Region
Dim m_IntegerOnly As Boolean
Dim m_PositiveOnly As Boolean
'<Description("If TRUE, only integers can be entered."), _
'Browsable(True), _
'Category("Validation"), _
'DefaultValue(False)> _
Property IntegerOnly() As Boolean
Get
Return m_IntegerOnly
End Get
Set(ByVal Value As Boolean)
m_IntegerOnly = Value
End Set
End Property
'<Description("If TRUE, only positive numbers can be entered."), _
'Browsable(True), _
'Category("Validation"), _
'DefaultValue(False)> _
Property PositiveOnly() As Boolean
Get
Return m_PositiveOnly
End Get
Set(ByVal Value As Boolean)
m_PositiveOnly = Value
End Set
End Property
Private Sub NumericTextBox_KeyPress(By
Dim KeyAscii As Integer
KeyAscii = Asc(e.KeyChar) ' NOTE: used as a flag when = 0 to mark bad values
Select Case KeyAscii
Case 48 To 57, 8, 13 ' Digits 0 - 9, Backspace, CR.
' These are OK, so accept them.
Case 45 ' Minus sign.
If PositiveOnly Then
KeyAscii = 0
Else
' Number can have only one minus sign, so if
' we already have one, throw this one away.
If InStr(Me.Text, "-") <> 0 Then
KeyAscii = 0
End If
' If the insertion point is not sitting at zero
' (i.e., the beginning of the field), throw away
' the minus sign because it's not valid anywhere
' but the first position
If Me.SelectionStart <> 0 Then
KeyAscii = 0
End If
End If
Case 46 ' Period (decimal point).
If IntegerOnly Then
KeyAscii = 0
Else
' If we already have one period, throw it away
If InStr(Me.Text, ".") <> 0 Then
KeyAscii = 0
End If
End If
Case Else ' Provide no handling for other keys.
KeyAscii = 0
End Select
' If we want to throw the keystroke away, then set the event
' as already handled. Otherwise, let the keystroke be
' handled normally.
If KeyAscii = 0 Then
e.Handled = True
Else
e.Handled = False
End If
End Sub
'-------------------------
ATTEMPT4
http://www.c-sharpcorner.com/Download.asp?file=/Code/2004/Jan/MaskedTextBoxJP.zip
but this is in C# and im doing vb.net, maybe there is still a way to use it if someone can help me
personally i would like to get option 2 or 3 working
thank you
<script language="JavaScript">
<!--
//************************
//purpose : Masks a numeric value by placing a dollar sign ($) and
// comma/commas in appropriate places.
//example : onBlur="this.value=formatC
//input parameters : numeric value
//returns : currency field with dollar sign and commas in appropriate places
//function calls made: none
//************************
function formatCurrency(num) {
num = num.toString().replace(/\$
if(isNaN(num))
num = "0";
sign = (num == (num = Math.abs(num)));
num = Math.floor(num*100+0.50000
cents = num%100;
num = Math.floor(num/100).toStri
if(cents<10)
cents = "0" + cents;
for (var i = 0; i < Math.floor((num.length-(1+
num = num.substring(0,num.length
num.substring(num.length-(
return (((sign)?'':'-') + '$' + num + '.' + cents);
}
//-->
</script>
In your Page_Load put the following code:
Text1.Attributes.Add("onbl
<!--
//************************
//purpose : Masks a numeric value by placing a dollar sign ($) and
// comma/commas in appropriate places.
//example : onBlur="this.value=formatC
//input parameters : numeric value
//returns : currency field with dollar sign and commas in appropriate places
//function calls made: none
//************************
function formatCurrency(num) {
num = num.toString().replace(/\$
if(isNaN(num))
num = "0";
sign = (num == (num = Math.abs(num)));
num = Math.floor(num*100+0.50000
cents = num%100;
num = Math.floor(num/100).toStri
if(cents<10)
cents = "0" + cents;
for (var i = 0; i < Math.floor((num.length-(1+
num = num.substring(0,num.length
num.substring(num.length-(
return (((sign)?'':'-') + '$' + num + '.' + cents);
}
//-->
</script>
In your Page_Load put the following code:
Text1.Attributes.Add("onbl
ASKER
i just got ATTEMPT1 working but i dont like the component so much
then i read the first post from iboutchkine, and i saw all the warnings that was given, and i thought
damn.
then i went to to check how the world renowned accounting program we bought handles this situation with the validation , and guess what:
it also has all the potential problems iboutchkine mentioned!
so i think if its good enough for them, its good enough for me.
im just gonna try them all out.
thanks!
then i read the first post from iboutchkine, and i saw all the warnings that was given, and i thought
damn.
then i went to to check how the world renowned accounting program we bought handles this situation with the validation , and guess what:
it also has all the potential problems iboutchkine mentioned!
so i think if its good enough for them, its good enough for me.
im just gonna try them all out.
thanks!
ASKER
ibouthckine, id like to use this sub:
Private Sub TextBox2_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPr
TextBox2.KeyPress
If Char.IsDigit(e.KeyChar) Then
MsgBox("Digit entered")
End If
'disable non-digits
e.Handled = Not Char.IsDigit(e.KeyChar)
End Sub
is there any way to modify : " e.Handled = Not Char.IsDigit(e.KeyChar)"
so i can use "." or "," as well to have decimal?
the value i want to enter is monetary
Private Sub TextBox2_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPr
TextBox2.KeyPress
If Char.IsDigit(e.KeyChar) Then
MsgBox("Digit entered")
End If
'disable non-digits
e.Handled = Not Char.IsDigit(e.KeyChar)
End Sub
is there any way to modify : " e.Handled = Not Char.IsDigit(e.KeyChar)"
so i can use "." or "," as well to have decimal?
the value i want to enter is monetary
ASKER CERTIFIED SOLUTION
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Private Sub TextBox2_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPr
If Char.IsDigit(e.KeyChar) Then
MsgBox("Digit entered")
End If
'disable non-digits
e.Handled = Not Char.IsDigit(e.KeyChar)
End Sub
Be aware
that there are a couple potential problems with these solutions.
- can't backspace to edit an entry
- can't paste valid data with keyboard
- can paste invalid data with mouse
- can't copy data with keyboard
some thoughts
The text in the textbox should by validated in the validating event and
not when the user types the text. Preventing the user from entering
characters can be annoying, for example when entering a negative number
you should not prevent the user from entering more than one "-"
character. The user is responsible for the proper format, when the focus
is set to an other control, the content gets validated. You can use an
ErrorProvider control to make the user aware of malformed or invalid
input.
'---another one ---
Public Class Form1
Inherits System.Windows.Forms.Form
#Region " Windows Form Designer generated code "
#End Region
Protected Overrides Function ProcessDialogKey(ByVal keydata As System.Windows.Forms.Keys)
If Me.TextBox1.Focused Then
Select Case keydata
Case Keys.D0, Keys.D1, Keys.D2, Keys.D3, Keys.D4, Keys.D5, Keys.D6, Keys.D7, Keys.D8, Keys.D9, Keys.Back 'accept digits only and Backspace
Return False
Case Else
Return True
End Select
Else
Return MyBase.ProcessDialogKey(ke
End If
End Function
End Class
'----another----------
Private Sub TextBox1_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPr
e.Handled = NumbersOnly(e.KeyChar, TextBox1)
End Sub
Private Function NumbersOnly(ByVal pstrChar As Char, ByVal oTextBox As TextBox) As Boolean
'validate the entry for a textbox limiting it to only numeric values and the decimal point
If (Convert.ToString(pstrChar
If Convert.ToString(pstrChar)
Return IIf(IsNumeric(pstrChar), False, True) 'check if numeric is returned
End If
Return False 'for backspace
End Function