Adds OnLoad and OnUnload methods to the credential provider and tile

src/Lithnet.CredentialProvider/CredentialProviderBase.ICredentialProvider.cs

@@ -60,6 +60,8 @@ namespace Lithnet.CredentialProvider
                     Marshal.AddRef(intPtr);
                 }
 
+                this.OnLoad();
+
                 return HRESULT.S_OK;
             }
             catch (Exception ex)
@@ -83,6 +85,8 @@ namespace Lithnet.CredentialProvider
                     this.credentialProviderEventsAdviseContext = IntPtr.Zero;
                 }
 
+                this.OnUnload();
+
                 return HRESULT.S_OK;
             }
             catch (Exception ex)

src/Lithnet.CredentialProvider/CredentialProviderBase.cs

@@ -174,6 +174,16 @@ namespace Lithnet.CredentialProvider
         /// <param name="inboundSerialization">The inbound serialized credential </param>
         public virtual void OnSetSerialization(CredentialSerialization inboundSerialization) { }
 
+        /// <summary>
+        /// This method is first called when the credential provider is initialized. Override this method to perform any initialization tasks
+        /// </summary>
+        public virtual void OnLoad() { }
+
+        /// <summary>
+        /// The method is called when the credential provider is being unloaded. Override this method to perform any cleanup tasks
+        /// </summary>
+        public virtual void OnUnload() { }
+
         private void BuildControls()
         {
             if (this.Controls == null)

src/Lithnet.CredentialProvider/CredentialTile.ICredentialProviderCredential.cs

@@ -22,6 +22,8 @@ namespace Lithnet.CredentialProvider
                     Marshal.AddRef(intPtr);
                 }
 
+                this.OnLoad();
+
                 return HRESULT.S_OK;
             }
             catch (Exception ex)
@@ -45,6 +47,8 @@ namespace Lithnet.CredentialProvider
                     this.events = null;
                 }
 
+                this.OnUnload();
+
                 return HRESULT.S_OK;
             }
             catch (Exception ex)

src/Lithnet.CredentialProvider/CredentialTile.cs

@@ -135,6 +135,17 @@ namespace Lithnet.CredentialProvider
             this.events2.EndFieldUpdates();
         }
 
+
+        /// <summary>
+        /// This method is called when the credential provider tile is initialized. Override this method to perform any initialization tasks
+        /// </summary>
+        public virtual void OnLoad() { }
+
+        /// <summary>
+        /// The method is called when the credential provider tile is being unloaded. Override this method to perform any cleanup tasks
+        /// </summary>
+        public virtual void OnUnload() { }
+
         /// <summary>
         /// Called after the tile has been initialized. Override this method to perform post-initialization actions.
         /// </summary>