GenericEnumConverter Class
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GenericEnumConverter Class

 

Converts between a string and an enumeration type.

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


public sealed class GenericEnumConverter : ConfigurationConverterBase

NameDescription
System_CAPS_pubmethodGenericEnumConverter(Type)

Initializes a new instance of the GenericEnumConverter class.

NameDescription
System_CAPS_pubmethodCanConvertFrom(ITypeDescriptorContext, Type)

Determines whether the conversion is allowed.(Inherited from ConfigurationConverterBase.)

System_CAPS_pubmethodCanConvertFrom(Type)

Returns whether this converter can convert an object of the given type to the type of this converter.(Inherited from TypeConverter.)

System_CAPS_pubmethodCanConvertTo(ITypeDescriptorContext, Type)

Determines whether the conversion is allowed.(Inherited from ConfigurationConverterBase.)

System_CAPS_pubmethodCanConvertTo(Type)

Returns whether this converter can convert the object to the specified type.(Inherited from TypeConverter.)

System_CAPS_pubmethodConvertFrom(ITypeDescriptorContext, CultureInfo, Object)
System_CAPS_pubmethodConvertFrom(Object)

Converts the given value to the type of this converter.(Inherited from TypeConverter.)

System_CAPS_pubmethodConvertFromInvariantString(ITypeDescriptorContext, String)

Converts the given string to the type of this converter, using the invariant culture and the specified context.(Inherited from TypeConverter.)

System_CAPS_pubmethodConvertFromInvariantString(String)

Converts the given string to the type of this converter, using the invariant culture.(Inherited from TypeConverter.)

System_CAPS_pubmethodConvertFromString(ITypeDescriptorContext, CultureInfo, String)

Converts the given text to an object, using the specified context and culture information.(Inherited from TypeConverter.)

System_CAPS_pubmethodConvertFromString(ITypeDescriptorContext, String)

Converts the given text to an object, using the specified context.(Inherited from TypeConverter.)

System_CAPS_pubmethodConvertFromString(String)

Converts the specified text to an object.(Inherited from TypeConverter.)

System_CAPS_pubmethodConvertTo(ITypeDescriptorContext, CultureInfo, Object, Type)
System_CAPS_pubmethodConvertTo(Object, Type)

Converts the given value object to the specified type, using the arguments.(Inherited from TypeConverter.)

System_CAPS_pubmethodConvertToInvariantString(ITypeDescriptorContext, Object)

Converts the specified value to a culture-invariant string representation, using the specified context.(Inherited from TypeConverter.)

System_CAPS_pubmethodConvertToInvariantString(Object)

Converts the specified value to a culture-invariant string representation.(Inherited from TypeConverter.)

System_CAPS_pubmethodConvertToString(ITypeDescriptorContext, CultureInfo, Object)

Converts the given value to a string representation, using the specified context and culture information.(Inherited from TypeConverter.)

System_CAPS_pubmethodConvertToString(ITypeDescriptorContext, Object)

Converts the given value to a string representation, using the given context.(Inherited from TypeConverter.)

System_CAPS_pubmethodConvertToString(Object)

Converts the specified value to a string representation.(Inherited from TypeConverter.)

System_CAPS_pubmethodCreateInstance(IDictionary)

Re-creates an Object given a set of property values for the object.(Inherited from TypeConverter.)

System_CAPS_pubmethodCreateInstance(ITypeDescriptorContext, IDictionary)

Creates an instance of the type that this TypeConverter is associated with, using the specified context, given a set of property values for the object.(Inherited from TypeConverter.)

System_CAPS_pubmethodEquals(Object)

Determines whether the specified object is equal to the current object.(Inherited from Object.)

System_CAPS_pubmethodGetCreateInstanceSupported()

Returns whether changing a value on this object requires a call to the CreateInstance method to create a new value.(Inherited from TypeConverter.)

System_CAPS_pubmethodGetCreateInstanceSupported(ITypeDescriptorContext)

Returns whether changing a value on this object requires a call to CreateInstance to create a new value, using the specified context.(Inherited from TypeConverter.)

System_CAPS_pubmethodGetHashCode()

Serves as the default hash function. (Inherited from Object.)

System_CAPS_pubmethodGetProperties(ITypeDescriptorContext, Object)

Returns a collection of properties for the type of array specified by the value parameter, using the specified context.(Inherited from TypeConverter.)

System_CAPS_pubmethodGetProperties(ITypeDescriptorContext, Object, Attribute[])

Returns a collection of properties for the type of array specified by the value parameter, using the specified context and attributes.(Inherited from TypeConverter.)

System_CAPS_pubmethodGetProperties(Object)

Returns a collection of properties for the type of array specified by the value parameter.(Inherited from TypeConverter.)

System_CAPS_pubmethodGetPropertiesSupported()

Returns whether this object supports properties.(Inherited from TypeConverter.)

System_CAPS_pubmethodGetPropertiesSupported(ITypeDescriptorContext)

Returns whether this object supports properties, using the specified context.(Inherited from TypeConverter.)

System_CAPS_pubmethodGetStandardValues()

Returns a collection of standard values from the default context for the data type this type converter is designed for.(Inherited from TypeConverter.)

System_CAPS_pubmethodGetStandardValues(ITypeDescriptorContext)

Returns a collection of standard values for the data type this type converter is designed for when provided with a format context.(Inherited from TypeConverter.)

System_CAPS_pubmethodGetStandardValuesExclusive()

Returns whether the collection of standard values returned from GetStandardValues is an exclusive list.(Inherited from TypeConverter.)

System_CAPS_pubmethodGetStandardValuesExclusive(ITypeDescriptorContext)

Returns whether the collection of standard values returned from GetStandardValues is an exclusive list of possible values, using the specified context.(Inherited from TypeConverter.)

System_CAPS_pubmethodGetStandardValuesSupported()

Returns whether this object supports a standard set of values that can be picked from a list.(Inherited from TypeConverter.)

System_CAPS_pubmethodGetStandardValuesSupported(ITypeDescriptorContext)

Returns whether this object supports a standard set of values that can be picked from a list, using the specified context.(Inherited from TypeConverter.)

System_CAPS_pubmethodGetType()

Gets the Type of the current instance.(Inherited from Object.)

System_CAPS_pubmethodIsValid(ITypeDescriptorContext, Object)

Returns whether the given value object is valid for this type and for the specified context.(Inherited from TypeConverter.)

System_CAPS_pubmethodIsValid(Object)

Returns whether the given value object is valid for this type.(Inherited from TypeConverter.)

System_CAPS_pubmethodToString()

Returns a string that represents the current object.(Inherited from Object.)

This type, like all the other configuration converter types, converts strings found in the configuration file to and from the related strongly typed properties.

In particular, the GenericEnumConverter object converts a String value, assigned to a configuration property, to an Enum value and vice versa.

The following code example shows how to access a custom section property that uses the GenericEnumConverter type.

using System;
using System.IO;
using System.ComponentModel;
using System.Configuration;

namespace Samples.AspNet
{

    public sealed class UsingGenericEnumConverter
    {
        public static void GetPermission()
        {
            try
            {
                CustomSection section =
                    ConfigurationManager.GetSection("CustomSection")
                    as CustomSection;

                Console.WriteLine("Default Permission: {0}", 
                    section.Permission.ToString());
            }
            catch (System.Exception e)
            {
                Console.WriteLine(e.Message);
            }
        }

        public static void SetPermission()
        {
            try
            {
                System.Configuration.Configuration config =
                  ConfigurationManager.OpenExeConfiguration(
                  ConfigurationUserLevel.None);

                CustomSection section =
                    config.Sections.Get("CustomSection")
                    as CustomSection;

                section.Permission = 
                    CustomSection.Permissions.FullControl;

                section.SectionInformation.ForceSave = true;
                config.Save(ConfigurationSaveMode.Full); 
                config.Save();

                Console.WriteLine("Current Protection: {0}",
                    section.Permission.ToString());
            }
            catch (System.Exception e)
            {
                Console.WriteLine(e.Message);
            }
        }
    }
}

The following code example shows how to define a custom enumerator property accessed in the previous example. Notice that there is no need to specify the GenericEnumConverter type; it is implicitly invoked by the system.


public enum Permissions
{
    FullControl         = 0,
    Modify              = 1,
    ReadExecute         = 2,
    Read                = 3,
    Write               = 4,
    SpecialPermissions  = 5
}

[ConfigurationProperty("permission", DefaultValue = Permissions.Read)]
public Permissions Permission
{
    get
    {
        return (Permissions)this["permission"];
    }

    set
    {
        this["permission"] = value;
    }

}

The following example is a configuration excerpt used by the previous example.

<?xml version="1.0" encoding="utf-8"?>
<configuration>

  <configSections>
    <section name="CustomSection" 
      type="Samples.AspNet.CustomSection, 
      ConfigurationConverters, 
      Version=1.0.0.0, Culture=neutral, 
      PublicKeyToken=null" 
      allowDefinition="Everywhere" 
      allowExeDefinition="MachineToApplication" 
      restartOnExternalChanges="true" />
  </configSections>

  <CustomSection fileName="default.txt" maxIdleTime="90" timeDelay="infinite" cdStr="str0, str1" permission="Read" maxUsers="Infinite"/>

</configuration>

.NET Framework
Available since 2.0

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

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