JavaScript Validation for marks(0-100) using ASP.NET

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Dear Sir/Madam...
I have to validate the textboxes which are having int values(marks between 0-100). Please kindly provide some codes using JavaScript.

<asp:TextBox ID="txt_Sname" runat="server" TabIndex="0">

<asp:TextBox ID="txt_mark1" runat="server" TabIndex="1">

<asp:TextBox ID="txt_mark2" runat="server" TabIndex="2">

<asp:TextBox ID="txt_mark3" runat="server" TabIndex="3">

<asp:TextBox ID="txt_mark4" runat="server" TabIndex="4">

<asp:Button ID="Btn_Submit" runat="server" OnClick="Btn_Submit_Click" Text="Submit" />

Thanks in Advance

Posted 2-Jul-14 7:27am

M.Thiyagaraja

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Sergey Alexandrovich Kryukov 2-Jul-14 13:50pm

Why this way? The validation in case of user mistake is always annoying. It's the best to avoid it.
—SA

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Sergey Alexandrovich Kryukov · Answer 1 · 2014-07-02T07:49:00

You won't need any validation if you show, for example, the list box with items 0 to 100.

The ideal choice would be System.Windows.Forms.NumericUpDown, but this is not presently available for ASP.NET in the .NET FCL. But you can use, for example, NumericUpDown from the Ajax Control Toolkit:
http://www.asp.net/AjaxLibrary/AjaxControlToolkitSampleSite/NumericUpDown/NumericUpDown.aspx[^].

You can try it out right on the page I referenced above and see how much it is better than the text box. No validation is always better then any validation.

—SA