📄 asp-validator.aspx

📁 ASP.NET Web Forms Techniques

💻 ASPX

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<%@Page Language="C#"%>
<html>
<body>

<form runat="server">

<asp:textbox id="txtTest" text="delete this" runat="server" />

<asp:RequiredFieldValidator id="valRequired" runat="server"
     ErrorMessage="* You must enter a value in the text box"
     ControlToValidate="txtTest"
     Display="dynamic">
*
</asp:RequiredFieldValidator>

<br />

<asp:button text="Validate" runat="server" />

<asp:ValidationSummary id="valSummary" runat="server"
     HeaderText="<b>The following errors were found:</b>"
     ShowSummary="true"
     DisplayMode="List" />


</form>

</body>
</html>

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