RequiredFieldValidator::InitialValue Property
Gets or sets the initial value of the associated input control.
Assembly: System.Web (in System.Web.dll)
[ThemeableAttribute(false)] public: property String^ InitialValue { String^ get (); void set (String^ value); }
<asp:RequiredFieldValidator InitialValue="String" />
Property Value
Type: System::StringA string that specifies the initial value of the associated input control. The default is String::Empty.
Use this property to specify the initial value of the input control.
Validation fails only if the value of the associated input control matches this InitialValue upon losing focus.
Note |
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The strings in both the InitialValue property and the input control are trimmed to remove extra spaces before and after the string before validation is performed. |
This property cannot be set by themes or style sheet themes. For more information, see ThemeableAttribute and ASP.NET Themes and Skins.
The following example demonstrates how to use the InitialValue property to ensure that the user enters a value in the text box.
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. |
The following example demonstrates how to use the InitialValue property to ensure that the user selects an item from the list box.
Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
Note