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FileSavePickerUI.TargetFileRequested | targetfilerequested event

Fires when the user commits a file to be saved in the file picker.

Syntax


function onTargetFileRequested(eventArgs) { /* Your code */ }
 
// addEventListener syntax
fileSavePickerUI.addEventListener("targetfilerequested", onTargetFileRequested);
fileSavePickerUI.removeEventListener("targetfilerequested", onTargetFileRequested);
 
- or -

fileSavePickerUI.ontargetfilerequested = onTargetFileRequested;

Event information

Delegate	TypedEventHandler(FileSavePickerUI, TargetFileRequestedEventArgs)

Remarks

If your app participates in the File Save Picker contract and a targetfilerequested event fires, your app should create a new storageFile that represents the file the user wants to save. The name of the storageFile you create must match the name of the file specified by the fileName property. The storageFile you create is returned to the app that called the file picker (the calling app) so that the calling app can write content to the file. Learn more about responding to this event in targetFileRequestedEventArgs.

Note File picker UI is disabled until the providing app has finished responding to this event.

Examples

The File picker sample demonstrates how to respond to a targetfilerequested event handler.

JavaScript



// Event handler
function onTargetFileRequested(e) {
    var deferral;
    deferral = e.request.getDeferral();

    // Create a file to pass to the file picker which then gives it to the calling app
    Windows.Storage.ApplicationData.current.localFolder.createFileAsync(fileSavePickerUI.fileName).done(function (file) {
            // Assign the resulting file to the targetFile property and complete the deferral to indicate success
        e.request.targetFile = file;
        deferral.complete();
    }, function () {
        // Set the targetFile property to null and complete the deferral to indicate failure
        e.request.targetFile = null;
        deferral.complete();
    });
};

// Register for the event
fileSavePickerUI.addEventListener("targetfilerequested", onTargetFileRequested, false);

In the example, e contains a TargetFileRequestedEventArgs object.

Requirements