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StringValidatorAttribute Class

Note: This class is new in the .NET Framework version 2.0.

Declaratively instructs the .NET Framework to perform string validation on a configuration property. This class cannot be inherited.

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

[AttributeUsageAttribute(AttributeTargets.Property)] 
public sealed class StringValidatorAttribute : ConfigurationValidatorAttribute
/** @attribute AttributeUsageAttribute(AttributeTargets.Property) */ 
public final class StringValidatorAttribute extends ConfigurationValidatorAttribute
AttributeUsageAttribute(AttributeTargets.Property) 
public final class StringValidatorAttribute extends ConfigurationValidatorAttribute

You use the StringValidatorAttribute to decorate a configuration property. This is to instruct the .NET Framework to validate the property using the StringValidator and pass to it the value of the decorating parameters.

You may apply StringValidatorAttribute objects to property types only.

The following example shows how to decorate the properties of a custom ConfigurationSection object using the StringValidatorAttribute object.

[ConfigurationProperty("fileName", DefaultValue = "default.txt",
    IsRequired = true, IsKey = false)]
[StringValidator(InvalidCharacters = " ~!@#$%^&*()[]{/;'\"|\\",
    MinLength = 1, MaxLength = 60)]
public string FileName
{
    get
    {
        return (string)this["fileName"];
    
    set
    {
        this["fileName"] = value;
    


System.Object
   System.Attribute
     System.Configuration.ConfigurationValidatorAttribute
      System.Configuration.StringValidatorAttribute

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

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

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

.NET Framework

Supported in: 2.0

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