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ConfigurationPropertyAttribute.IsRequired Property

Gets or sets a value indicating whether the decorated element property is required.

Namespace:  System.Configuration
Assembly:  System.Configuration (in System.Configuration.dll)

public bool IsRequired { get; set; }

Property Value

Type: System.Boolean
true if the property is required; otherwise, false. The default is false.

The following example shows how to use the DefaultValue property.

[ConfigurationProperty("url", DefaultValue = "http://www.contoso.com",
    IsRequired = true)]
[RegexStringValidator(@"\w+:\/\/[\w.]+\S*")]
public string Url
{
    get
    {
        return (string)this["url"];
    }
    set
    {
        this["url"] = value;
    }
}

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

.NET Framework

Supported in: 3.5, 3.0, 2.0

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