Dot Net Code Snippets

Now we have to discuss about the validationexpression ie:

the textbox should accept empty values , numeric ( float ) .

Implementation Code :

^\d*\.?\d*$

HTML

<asp:TextBox ID="TextBox3" runat="server"></asp:TextBox>
       <asp:RegularExpressionValidator ID="RegularExpressionValidator3" runat="server" ErrorMessage="Invalid format" ControlToValidate="TextBox3" ValidationExpression="^\d*\.?\d*$" ValidationGroup="d"></asp:RegularExpressionValidator>
  <asp:Button ID="Button5" runat="server" Text="Button" ValidationGroup="d" />