Validate Decimal Number with Thousand separator using jQuery ValidationEngine Plugin in ASP.Net

Hi jmontano,

Check this example. Now please take its reference and correct your code.

HTML

<asp:TextBox runat="server" ID="txtAmount" OnTextChanged="ValidateAmount" AutoPostBack="true" />
<asp:Label ID="lblMessage" runat="server" />

Namespaces

C#

using System.Drawing;
using System.Text.RegularExpressions;

VB.Net

Imports System.Drawing
Imports System.Text.RegularExpressions

Code

C#

protected void ValidateAmount(object sender, EventArgs e)
{
    lblMessage.Text = "";
    Regex regxWithThousandSeparator = new Regex(@"^(?!0+\.00)(?=.{1,9}(\.|$))(?!0(?!\.))\d{1,3}(,\d{3})*(\.\d{1,2})?$");
    Regex regxWithoutThousandSeparator = new Regex(@"^(\d+(\.\d{0,2})?|\.?\d{1,2})$");
    if (regxWithThousandSeparator.IsMatch(txtAmount.Text.Trim()) || regxWithoutThousandSeparator.IsMatch(txtAmount.Text.Trim()))
    {
        lblMessage.Text = "Valid Amount.";
        lblMessage.ForeColor = Color.Green;
    }
    else
    {
        lblMessage.Text = "Invalid Amount.";
        lblMessage.ForeColor = Color.Red;
    }
}

VB.Net

Protected Sub ValidateAmount(ByVal sender As Object, ByVal e As EventArgs)
    lblMessage.Text = ""
    Dim regxWithThousandSeparator As Regex = New Regex("^(?!0+\.00)(?=.{1,9}(\.|$))(?!0(?!\.))\d{1,3}(,\d{3})*(\.\d{1,2})?$")
    Dim regxWithoutThousandSeparator As Regex = New Regex("^(\d+(\.\d{0,2})?|\.?\d{1,2})$")

    If regxWithThousandSeparator.IsMatch(txtAmount.Text.Trim()) OrElse regxWithoutThousandSeparator.IsMatch(txtAmount.Text.Trim()) Then
        lblMessage.Text = "Valid Amount."
        lblMessage.ForeColor = Color.Green
    Else
        lblMessage.Text = "Invalid Amount."
        lblMessage.ForeColor = Color.Red
    End If
End Sub

Output

Valid Cases

1

1.00

100.25

17,550.25

9,999,999

Invalid Cases

1.

9,999,999.

1,000.256