通过

DataConnectionProperties Class

Provides support for the parsing and formatting of connection strings containing these properties, as well as for strongly typed property storage, custom attributes, and synonyms.

Inheritance Hierarchy

System.Object
  Microsoft.VisualStudio.Data.DataConnectionProperties
    Microsoft.VisualStudio.Data.AdoDotNet.AdoDotNetConnectionProperties

Namespace:  Microsoft.VisualStudio.Data
Assembly:  Microsoft.VisualStudio.Data (in Microsoft.VisualStudio.Data.dll)

Syntax

声明
Public Class DataConnectionProperties _
    Implements IDataConnectionProperties, ICustomTypeDescriptor, IDictionary, ICollection,  _
    IEnumerable

public class DataConnectionProperties : IDataConnectionProperties, 
    ICustomTypeDescriptor, IDictionary, ICollection, IEnumerable

public ref class DataConnectionProperties : IDataConnectionProperties, 
    ICustomTypeDescriptor, IDictionary, ICollection, IEnumerable

type DataConnectionProperties =  
    class
        interface IDataConnectionProperties
        interface ICustomTypeDescriptor
        interface IDictionary
        interface ICollection
        interface IEnumerable
    end

public class DataConnectionProperties implements IDataConnectionProperties, ICustomTypeDescriptor, IDictionary, ICollection, IEnumerable

The DataConnectionProperties type exposes the following members.

Constructors

  Name Description
Public method DataConnectionProperties() Class constructor. Instantiates a non-parameterized instance of the DataConnectionProperties class.
Public method DataConnectionProperties(IComparer) Class constructor. Instantiates a parameterized instance of the DataConnectionProperties class that provides the ability to compare property names.
Public method DataConnectionProperties(IComparer, Char, Char) Class constructor. Instantiates a parameterized instance of the DataConnectionProperties class that provides the ability to compare property names.

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Properties

  Name Description
Public property IsComplete Retrieves a Boolean value indicating whether a given connection string is complete.
Public property IsExtensible Retrieves or sets a Boolean value indicating whether the DDEX Provider connection properties are extensible.
Public property Item Retrieves or sets a value for a specified property on the DDEX Provider.
Protected property OrderedProperties Retrieves a collection of property names specifying a reasonable (or necessary) order for the properties when represented in string form.

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Methods

  Name Description
Public method Add Adds a new property to the current connection properties collection.
Protected method AddProperty(PropertyDescriptor, array<Attribute[]) Dynamically adds a new property to the collection of properties natively recognized by the current instance of the DataConnectionProperties class.
Protected method AddProperty(String, Type, array<Attribute[]) Dynamically adds a new property to the collection of properties natively recognized by this data connection properties instance.
Public method Contains Tests whether a specified property is a member of the current set of connection properties.
Public method Equals Determines whether the specified Object is equal to the current Object. (Inherited from Object.)
Public method EquivalentTo Retrieves a Boolean value indicating whether the current instance of the DataConnectionProperties class is equivalent to another DataConnectionProperties instance.
Protected method Finalize Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.)
Public method GetBasicProperties Retrieves an array of property names representing the set of "basic" properties known by the current DataConnectionProperties instance.
Public method GetEnumerator Retrieves an enumerator that enumerates over all the known connection properties and their values, if any.
Public method GetHashCode Serves as a hash function for a particular type. (Inherited from Object.)
Protected method GetNameAsString Formats a property name for placement in a connection string.
Protected method GetProperties() Retrieves the collection of descriptors of all currently known properties.
Protected method GetProperties(array<Attribute[]) Retrieves the collection of descriptors of currently known properties that match a specified set of attributes.
Protected method GetProperty Retrieves the descriptor of a property with the specified property name.
Public method GetSynonyms Retrieves an array list of synonyms for a specified property.
Public method GetType Gets the Type of the current instance. (Inherited from Object.)
Protected method GetValueAsString Formats a property value for placement in a connection string.
Protected method Initialize Initializes the current DataConnectionProperties instance to its default state, then sets each property in the specified dictionary.
Protected method InitializeProperties Initializes the set of natively recognized properties for the current DataConnectionProperties instance.
Protected method InitializeSynonyms Initializes the set of synonyms available for each natively recognized property in the current DataConnectionProperties instance.
Protected method InitializeValue Initializes the value of a specified connection property.
Protected method InitializeValues Initializes values for a specified set of properties using a dictionary of name/value pairs.
Public method IsSensitive Indicates whether a property contains sensitive information.
Protected method MemberwiseClone Creates a shallow copy of the current Object. (Inherited from Object.)
Protected method ModifyProperty Modifies an existing property of which the current DataConnectionProperties instance is natively aware.
Protected method OnPropertyChanged Raises the PropertyChanged event.
Public method Parse Disassembles the components of a connection string into a set of properties in the current DataConnectionProperties instance.
Protected method ReadNameFromString Reads a property name from a connection string starting at a specified index, then updates the index to point to a position immediately following the property name.
Protected method ReadValueFromString Reads a property value from a connection string starting at a specified index, converts it to the correct type, and updates the index to point to a position following the property name.
Public method Remove Removes a property from the current connection property collection.
Protected method RemoveProperty Removes a natively recognized property.
Public method Reset() Resets the values of connection properties to an initial state.
Public method Reset(String) Resets the value of a specified connection property to its initial state.
Protected method ResolveSynonym Attempts to resolves a synonym for the PropertyDescriptor associated with a base property by returning the base property descriptor.
Protected method SetSynonyms Sets a list of strings as synonyms of a specified base property name.
Protected method ShouldPersistProperty Indicates whether a property should be persisted when building a connection string.
Public method Test Tests to assure that the current set of connection properties will successfully open a connection.
Public method ToDisplayString Retrieves a string representation of the current set of data connection properties that are suitable for on-screen display.
Public method ToFullString Retrieves a string representation of the current set of data connection properties for this instance.
Public method ToString Retrieves a full string representation of the current connection properties. (Overrides Object.ToString().)

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Events

  Name Description
Public event PropertyChanged Event that fires on the occurrence of a change to a connection property.

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Explicit Interface Implementations

  Name Description
Explicit interface implemetationPrivate method IDictionary.Add Adds an element as a key/value pair to the specified IDictionary.
Explicit interface implemetationPrivate method IDictionary.Clear Removes all elements from the specified IDictionary.
Explicit interface implemetationPrivate method IDictionary.Contains Determines whether the IDictionary contains an element with the specified key.
Explicit interface implemetationPrivate method ICollection.CopyTo Copies the set of connection properties to an array, starting at the specified array index.
Explicit interface implemetationPrivate property ICollection.Count Retrieves the number of elements contained in the ICollection.
Explicit interface implemetationPrivate method ICustomTypeDescriptor.GetAttributes Retrieves a collection of custom attributes for the specified object.
Explicit interface implemetationPrivate method ICustomTypeDescriptor.GetClassName Retrieves the class name of the specified object.
Explicit interface implemetationPrivate method ICustomTypeDescriptor.GetComponentName Retrieves the name of the specified object.
Explicit interface implemetationPrivate method ICustomTypeDescriptor.GetConverter Retrieves a type converter for the specified object.
Explicit interface implemetationPrivate method ICustomTypeDescriptor.GetDefaultEvent Retrieves the default event for the specified object.
Explicit interface implemetationPrivate method ICustomTypeDescriptor.GetDefaultProperty Retrieves the default property for the specified object.
Explicit interface implemetationPrivate method ICustomTypeDescriptor.GetEditor Retrieves an editor of the specified type for this object.
Explicit interface implemetationPrivate method IDictionary.GetEnumerator Retrieves an IDictionaryEnumerator for the IDictionary.
Explicit interface implemetationPrivate method IEnumerable.GetEnumerator Retrieves an enumerator that is able to iterate through the connection properties collection.
Explicit interface implemetationPrivate method ICustomTypeDescriptor.GetEvents() Retrieves the events for the specified instance of a component.
Explicit interface implemetationPrivate method ICustomTypeDescriptor.GetEvents(array<Attribute[]) Retrieves the events for this instance of a component using the specified attribute array as a filter.
Explicit interface implemetationPrivate method ICustomTypeDescriptor.GetProperties() Retrieves the properties for the specified instance of a component.
Explicit interface implemetationPrivate method ICustomTypeDescriptor.GetProperties(array<Attribute[]) Retrieves the properties for the specified instance of a component using the attribute array as a filter.
Explicit interface implemetationPrivate method ICustomTypeDescriptor.GetPropertyOwner Retrieves an object that contains the property described by the specified property descriptor.
Explicit interface implemetationPrivate property IDictionary.IsFixedSize Retrieves a Boolean value indicating whether the specified IDictionary has a fixed size.
Explicit interface implemetationPrivate property IDictionary.IsReadOnly Retrieves a Boolean indicating whether the IDictionary is read-only.
Explicit interface implemetationPrivate property ICollection.IsSynchronized Retrieves a value that indicates whether access to the connection properties collection is synchronized (thread safe).
Explicit interface implemetationPrivate property IDictionary.Item Retrieves an item, or element, with the specified key.
Explicit interface implemetationPrivate property IDictionary.Keys Retrieves an ICollection containing the keys for the IDictionary.
Explicit interface implemetationPrivate method IDictionary.Remove Removes the element with the specified key from the IDictionary.
Explicit interface implemetationPrivate property ICollection.SyncRoot Retrieves an object that can be used to synchronize access to the connection properties collection.
Explicit interface implemetationPrivate property IDictionary.Values Retrieves an ICollection containing the values in the specified IDictionary.
Explicit interface implemetationPrivate event IDataConnectionProperties.PropertyChanged Event that fires on the occurrence of a change to a connection property.

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Remarks

In the simplest case, a derived class should add properties to its class and place component attributes on these properties to customize their behavior. In the more advanced case, a derived class can override the parsing and formatting code, and dynamically change any of the properties based on specific actions, such as setting the value of a property.

Thread Safety

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

See Also

Reference

Microsoft.VisualStudio.Data Namespace

DataConnection