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Special Characters in a text box - don't want them

Posted on 2013-06-06
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Last Modified: 2013-06-06
I have a web page that collects people’s names , addresses and so on.  There is a problem when someone enters their information and uses special characters in their name or addresses.  Such as Âlice Pâté.  I tried using a RegularExpressionValidator  with the ValidationExpression="^[a-zA-Z]{1,40}" and they can still get the special characters through.  

How can I prevent this.  I am using Visual Studio 2010 with Visual Basic on the aspx pages.

Any ideas?
<asp:RegularExpressionValidator ID="regexpName" runat="server"     
                                    ErrorMessage="This expression does not validate." 
                                    ControlToValidate="TextBox1"     
                                    ValidationExpression="^[a-zA-Z]{1,40}" />

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Question by:us1975mc
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11 Comments
 
LVL 22

Expert Comment

by:plusone3055
ID: 39226535
Look on page 2
The javascript works
http://forums.asp.net/t/1130796.aspx/2/10
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Author Comment

by:us1975mc
ID: 39226548
plusone3055,

I currently have this code:
<script type="text/JavaScript">
    function valid(f) {
        !(/^[A-z;0-9]*$/i).test(f.value) ? f.value = f.value.replace(/[^A-z;0-9]/ig, '') : null;
    } 
</script>

 <asp:TextBox ID="TextBox1" runat="server" Text="" Width="400px"  onkeyup="valid(this)" onblur="valid(this)"/>

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Problem here is it don't allow spaces.  How do I get a space in there?
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LVL 22

Expert Comment

by:plusone3055
ID: 39226573
try
<script type="text/JavaScript">
    function valid(f) {
        !(/^[A-z;0-9\d\s]*$/i).test(f.value) ? f.value = f.value.replace(/[^A-z;0-9]/ig, '') : null;
    }
</script>
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Author Comment

by:us1975mc
ID: 39226580
When I leave the textbox it takes all spaces out.  So if I placed in 'Alice Pate' as soon as I leave the textbox it changes to 'AlicePate'
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LVL 22

Expert Comment

by:plusone3055
ID: 39226603
try
<script type="text/JavaScript">
    function valid(f) {
        !(/^[A-z;0-9 _]*$/i).test(f.value) ? f.value = f.value.replace(/[^A-z;0-9]/ig, '') : null;
    }
</script>


 !(/^[A-z;0-9 _]*$/i).test

NOTE there is a "_"  before the closing bracket
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Author Comment

by:us1975mc
ID: 39226646
OK... Here is where it becomes strange.  It works fine if I don't give a special character.  If I enter 'Alice Pate' it gives 'Alice Pate' but is I enter 'Âlice Pàte' it gives 'AlicePate' it gives 'licePte'.  It still takes the space if a special character is added and it is fine if no special character is entered.
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LVL 22

Expert Comment

by:plusone3055
ID: 39226663
try
<script type="text/JavaScript">
    function valid(f) {
        !(/^[A-z;0-9 _]*$/i).test(f.value) ? f.value = f.value.replace(/[^A-z;0-9 _]/ig, '') : null;
    }
</script>
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Accepted Solution

by:
plusone3055 earned 2000 total points
ID: 39226665
forgot the _ at the end of the other side
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Author Closing Comment

by:us1975mc
ID: 39226699
That was the ticket!

Thanks!
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LVL 22

Expert Comment

by:plusone3055
ID: 39226713
Ooooh raaaah !
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Author Comment

by:us1975mc
ID: 39226719
Semper Fi, Mac!
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