Class LocalFileCacheProvider

Provides local file system-based caching for map tiles, implementing the IMapCacheProvider interface to store and retrieve map data from disk.

Inheritance
System.Object
LocalFileCacheProvider
Inherited Members
System.Object.ToString()
System.Object.Equals(System.Object)
System.Object.Equals(System.Object, System.Object)
System.Object.ReferenceEquals(System.Object, System.Object)
System.Object.GetHashCode()
System.Object.GetType()
System.Object.MemberwiseClone()
Namespace: Telerik.WinControls.UI
Assembly: Telerik.WinControls.RadMap.dll

Syntax

public class LocalFileCacheProvider : IMapCacheProvider

Constructors

LocalFileCacheProvider(String)

Initializes a new instance of the LocalFileCacheProvider class with the specified cache directory, creating the directory if it doesn't exist.

Declaration
public LocalFileCacheProvider(string cacheDirectoryPath)
Parameters
System.String cacheDirectoryPath

The file system path where cached map tiles will be stored.

Properties

CacheDirectoryPath

Gets or sets the directory path where cached map tiles are stored, automatically creating the directory if it doesn't exist.

Declaration
public string CacheDirectoryPath { get; set; }
Property Value
System.String

Methods

AsyncFileReadComplete(IAsyncResult)

Handles the completion of asynchronous file read operations, closing resources and invoking the callback with the loaded data.

Declaration
protected virtual void AsyncFileReadComplete(IAsyncResult asyncResult)
Parameters
System.IAsyncResult asyncResult

The System.IAsyncResult representing the status of the asynchronous operation.

Load(String)

Synchronously loads cached data from the file system using the specified key, checking expiration and returning null if expired or not found.

Declaration
public Stream Load(string key)
Parameters
System.String key

The cache key identifying the cached item to load.
Returns
System.IO.Stream

A System.IO.Stream containing the cached data, or null if not found or expired.
Implements

LoadAsync(String, Action<String, Byte[]>)

Asynchronously loads cached data from the file system using the specified key, invoking the callback with the results or null if not found or expired.

Declaration
public void LoadAsync(string key, Action<string, byte[]> callback)
Parameters
System.String key

The cache key identifying the cached item to load.
System.Action<System.String, System.Byte[]> callback

The callback action to invoke with the key and loaded data when the operation completes.
Implements

Save(String, DateTime, Byte[])

Saves data to the cache with the specified key and expiration date, creating or overwriting the file as necessary.

Declaration
public void Save(string key, DateTime expirationDate, byte[] content)
Parameters
System.String key

The cache key identifying the item to save.
System.DateTime expirationDate

The expiration date for the cached item.
System.Byte[] content

The byte array containing the data to cache.
Implements

Extension Methods