IsolatedStorageFile.IncreaseQuotaTo(Int64) Method

Reference

Definition

Namespace:: System.IO.IsolatedStorage

Assembly:: System.IO.IsolatedStorage.dll

Assembly:: mscorlib.dll

Assembly:: netstandard.dll

Source:: IsolatedStorageFile.cs

Source:: IsolatedStorageFile.cs

Source:: IsolatedStorageFile.cs

Important

Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.

Enables an application to explicitly request a larger quota size, in bytes.

public:
 override bool IncreaseQuotaTo(long newQuotaSize);

public override bool IncreaseQuotaTo (long newQuotaSize);

[System.Runtime.InteropServices.ComVisible(false)]
public override bool IncreaseQuotaTo (long newQuotaSize);

override this.IncreaseQuotaTo : int64 -> bool

[<System.Runtime.InteropServices.ComVisible(false)>]
override this.IncreaseQuotaTo : int64 -> bool

Public Overrides Function IncreaseQuotaTo (newQuotaSize As Long) As Boolean

Parameters

newQuotaSize: Int64

The requested size, in bytes.

Returns

Boolean

true if the new quota is accepted; otherwise, false.

Attributes: ComVisibleAttribute

Exceptions

ArgumentException

newQuotaSize is less than current quota size.

ArgumentOutOfRangeException

newQuotaSize is less than zero, or less than or equal to the current quota size.

InvalidOperationException

The isolated store has been closed.

NotSupportedException

The current scope is not for an application user.

ObjectDisposedException

The isolated store has been disposed.

IsolatedStorageException

The isolated store has been removed.

-or-

Isolated storage is disabled.

Remarks

The IncreaseQuotaTo method enables an application to explicitly request a larger quota size in bytes. The new quota size must not be smaller than the current quota size, because only quota increases are allowed.

Whenever the IncreaseQuotaTo method is called, isolated storage calls the CheckSecuritySettings method.

You can implement policy decisions by creating a custom AppDomainManager object that overrides the CheckSecuritySettings method so that the object can perform policy decisions based on a IsolatedStorageSecurityState object.

If there is no custom AppDomainManager object, the quota increase request is denied, because the default implementation for CheckSecuritySettings returns false.

Currently, none of the hosts in the .NET Framework provide this customization, so IncreaseQuotaTo always returns false.

Applies to