how to check user data

RAVI 896 Reputation points
2024-04-16T12:33:55.6866667+00:00

Hello

In asp.net textbox if user enter something like this with special charater i need to show alert check data

For example

  1. APPLE /45 it has auto correct like this APPLE /45
  2. MFLOW +/ CURRENT it has to auto corrrect like this MFLOW / CURRENT
  3. HELLO 'C' it has to correct to HELLO

how to solve this type of error using C# or javascript onekypress

Thanking You

ASP.NET
ASP.NET
A set of technologies in the .NET Framework for building web applications and XML web services.
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  1. Lan Huang-MSFT 25,636 Reputation points Microsoft Vendor
    2024-04-17T03:48:08.02+00:00

    Hi @RAVI,

    The onkeypress event is deprecated.You can use onchange Event.

    APPLE /45 it has auto correct like this APPLE /45

    Didn't see anything that needed to be changed.

    MFLOW +/ CURRENT it has to auto corrrect like this MFLOW / CURRENT

    Remove the plus sign：\\+

    HELLO 'C' it has to correct to HELLO

    Do you want to remove the quotes and everything in them?If so, you can use '\\w+\\'

    All code

    <html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>     
    <script>
        function myFunction() {
            var Regex = new RegExp("'\\w+\\'|\\+");
            var word = document.getElementById("TextBox1").value;
            console.log(word);
            var istr = Regex.test(word);
            if (istr) {
                alert("Unnecessary Characters! Corrected!")              
                var a = word.replace(Regex, '');
                document.getElementById("TextBox1").value = a;
            }                      
        }
    </script>
</head>
<body>
    <form id="form1" runat="server">
        <div>
            <asp:TextBox ID="TextBox1" runat="server" onchange="myFunction()"></asp:TextBox>
        </div>
    </form>
</body>
</html>

    Best regards,
    Lan Huang

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