Windows Dev Center

Expand Minimize

StorageFile.IsEqual | isEqual method

Indicates whether the current file is equal to the specified file.

Syntax


var boolean = storageFile.isEqual(item);

Parameters

item

Type: IStorageItem

The IStorageItem object that represents a file to compare against.

Return value

Type: Boolean [JavaScript] | System.Boolean [.NET] | Platform::Boolean [C++]

Returns true if the current file is equal to the specified file; otherwise false.

Remarks

Use the IsEqual method to determine whether two storage items represent the same file or folder.

This method compares the Path property of both items to determine if they are the same. If there is no Path (if the item is a library for example), or if the paths do not match the items are compared using IShellItem::Compare.

This example shows how to compare two storage files for equality.


function openNewFile() {
    var picker = new Windows.Storage.Pickers.FileOpenPicker;
    picker.fileTypeFilter.replaceAll(["*"]);
    picker.pickSingleFileAsync().then(function (file) {
        var alreadyOpenedFile = null;
        _openFiles.some(function (openFile) {
            if (file.IsEqual(openFile.file)) {
                alreadyOpenedFile = openFile;
                return true;
            }
            return false;
        });

        if (alreadyOpenedFile != null) {
            alreadyOpenedFile.window.activate();
        } else {
            createNewFileViewerWindow(file);
        }
    });
}


Requirements (device family)

Device family

Universal

API contract

Windows.Foundation.UniversalApiContract, introduced version 1.0

Namespace

Windows.Storage
Windows::Storage [C++]

Metadata

Windows.Foundation.UniversalApiContract.winmd

Requirements (operating system)

Minimum supported client

Windows 8.1

Minimum supported server

Windows Server 2012 R2

Minimum supported phone

None supported

Namespace

Windows.Storage
Windows::Storage [C++]

Metadata

Windows.winmd

See also

StorageFile
StorageFolder.IsEqual

 

 

Show:
© 2015 Microsoft