HiddenField.Value Property
.NET Framework (current version)
Gets or sets the value of the hidden field.
Assembly: System.Web (in System.Web.dll)
Property Value
Type: System.StringThe value of the hidden field. The default is an empty string ("").
Use the Value property to specify or determine the value of the HiddenField control.
The following example demonstrates how to use the Value property to specify the value of the HiddenField control.
Security Note
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This example has a text box that accepts user input, which is a potential security threat. By default, ASP.NET Web pages validate that user input does not include script or HTML elements. For more information, see Script Exploits Overview. |
<%@ Page language="C#" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <script runat="server"> void ValueHiddenField_ValueChanged (Object sender, EventArgs e) { // Display the value of the HiddenField control. Message.Text = "The value of the HiddenField control is " + ValueHiddenField.Value + "."; } </script> <html xmlns="http://www.w3.org/1999/xhtml" > <head runat="server"> <title>HiddenField Example</title> </head> <body> <form id="Form1" runat="server"> <h3>HiddenField Example</h3> Please enter a value and click the submit button.<br/> <asp:Textbox id="ValueTextBox" runat="server"/> <br/> <input type="submit" name="SubmitButton" value="Submit" onclick="PageLoad()" /> <br/> <asp:label id="Message" runat="server"/> <asp:hiddenfield id="ValueHiddenField" onvaluechanged="ValueHiddenField_ValueChanged" value="" runat="server"/> </form> </body> </html> <script type="text/javascript"> <!-- function PageLoad() { // Set the value of the HiddenField control with the // value from the TextBox. Form1.ValueHiddenField.value = Form1.ValueTextBox.value; } --> </script>
.NET Framework
Available since 2.0
Available since 2.0
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