Only Number validation in Textbox of ASP.NET Using Regular Expression validator

Only Number validation in Textbox of ASP.NET Using Regular Expression validator

Only numbers can enter into that Textbox

We can use Regular expression validator for this:

In the validation expression property keep ^\d+$.

<asp:TextBox ID="TextBox1" runat="server" Style="z-index: 100; left: 259px; position: absolute;

top: 283px" ValidationGroup="check"></asp:TextBox>

<asp:RegularExpressionValidator ID="RegularExpressionValidator1" runat="server" ControlToValidate="TextBox1"

ErrorMessage="Please Enter Only Numbers" Style="z-index: 101; left: 424px; position: absolute;

top: 285px" ValidationExpression="^\d+$" ValidationGroup="check"></asp:RegularExpressionValidator>