RegularExpressionValidator and Regex results Differently [SOLVED]

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Testing Through RegularExpressionValidator control:

XML

<asp:TextBox ID="TextBox1" runat="server"
    ValidationGroup="Regex"></asp:TextBox>
&nbsp;
<asp:RegularExpressionValidator ID="RegularExpressionValidator1" runat="server"
    ControlToValidate="TextBox1" ErrorMessage="Invalid"
    ValidationExpression="[0-9]{0,5}" ValidationGroup="Regex"></asp:RegularExpressionValidator>
 <asp:Button ID="btnTestRegex" runat="server" Text="Valid Or Not?"
    ValidationGroup="Regex" />

Input:
TextBox1.Text = "1a";
Output:
Invalid.
-------------------------------******---------------------------------
Through Coding :

XML

<asp:TextBox ID="TextBox2" runat="server"></asp:TextBox>
                            &nbsp;&nbsp;
                            <asp:Label ID="lblValid" runat="server" Text="Valid" Visible="false"></asp:Label>
                            &nbsp;&nbsp;
                            <asp:Label ID="lblInvalid" runat="server" Text="Invalid" Visible="false"></asp:Label>
                            &nbsp;&nbsp;
                            <asp:Button ID="Button3" runat="server" onclick="Button2_Click" Text="Button" />

Input:
TextBox1.Text = "1a";
Output:
Valid.

-----------------------------------*********----------------------------

Can anyone tell why this is behaving differently????

Posted 13-Apr-10 0:34am

Minaxi Sajwan

Updated 13-Apr-10 1:35am

#realJSOP

v2

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Minaxi Sajwan · Answer 1 · 2010-04-13T00:50:00

I got the correct answer.
While using Regex though coding, we should specify the Format as
^[0-9]{0,5}$ instead of only [0-9]{0,5}.
The ^ carrot shows begning match
and $ dollar shows ending match.

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