RegexStringValidatorAttribute(String) Constructor

Definition

Namespace:

System.Configuration

Assembly:

System.Configuration.ConfigurationManager.dll

Source:

RegexStringValidatorAttribute.cs

Initializes a new instance of the RegexStringValidatorAttribute object.

public:
 RegexStringValidatorAttribute(System::String ^ regex);

public RegexStringValidatorAttribute (string regex);

new System.Configuration.RegexStringValidatorAttribute : string -> System.Configuration.RegexStringValidatorAttribute

Public Sub New (regex As String)

Parameters

regex

String

The string to use for regular expression validation.

Examples

The following example shows how to use the RegexStringValidatorAttribute constructor.

[ConfigurationProperty("alias2", DefaultValue = "alias.txt",
    IsRequired = true, IsKey = false)]
[RegexStringValidator(@"\w+\S*")]
public string Alias2
{
    get
    {
        return (string)this["alias2"];
    }
    set
    {
        this["alias2"] = value;
    }
}

<ConfigurationProperty("alias2", _
DefaultValue:="alias.txt", _
IsRequired:=True, _
IsKey:=False), _
RegexStringValidator("\w+\S*")> _
Public Property Alias2() As String
    Get
        Return CStr(Me("alias2"))
    End Get
    Set(ByVal value As String)
        Me("alias2") = value
    End Set
End Property

Remarks

The regex parameter contains the regular expression pattern that a string must match before it can be assigned to the decorated configuration-element property.

You use this constructor in the attributed model to ensure that the string value assigned to the related property contains only the allowed characters.

See also

• RegexStringValidator