Both file open and file save pickers from the If (FileSystemAccessApiInformation.AreFilePickersSupported)
If (FileSystemAccessApiInformation.IsSavePickerSupported) File System Access API open picker is available. If (FileSystemAccessApiInformation.IsOpenPickerSupported) You can utilize the WASM specific API: #if _WASM_
#Silverlight font picker download#
A typical reason might be to ensure only Save As functionality is available to the user when the browser only supports download pickers. In some cases, you might want to check whether File System Access API is supported in the current runtime environment. For File System Access API, this is a no-op and immediatelyĪwait CachedFileManager.CompleteUpdatesAsync(file) Ĭhecking whether File System Access API is supported and triggers the save dialog for the user. For download picker this starts the download process of the browser Var file = await savePicker.PickSaveFileAsync() Īwait FileIO.WriteTextAsync(file, "Hello, world!") For File System Access API, this triggers the picker to allow
and a temporary file is returned immediately. For download picker, no dialog is actually triggered here SavePicker.SuggestedFileName = "New Document" FileSavePicker var fileSavePicker = new FileSavePicker() įileSavePicker.SuggestedStartLocation = PickerLocationId.ComputerFolder įileSavePicker.SuggestedFileName = "myfile.txt" į("Plain Text", new List() ) extension, with the exception of * (asterisk) which allows picking any type of file. FileTypes must include at least one item. Notes: While the SuggestedStartLocation has currently no effect in Uno Platform targets, it must be set, otherwise the dialog crashes on UWP. At least one file was picked, you can use them Var pickedFiles = await fileOpenPicker.PickMultipleFilesAsync() Picking multiple files var fileOpenPicker = new FileOpenPicker() į(".jpg") į(".png") No file was picked or the dialog was cancelled. Var text = await FileIO.ReadTextAsync(pickedFile) StorageFile pickedFile = await fileOpenPicker.PickSingleFileAsync() FileOpenPicker Picking a single file var fileOpenPicker = new FileOpenPicker() įileOpenPicker.SuggestedStartLocation = PickerLocationId.ComputerFolder į(".txt") į(".csv") Notes: While the SuggestedStartLocation has currently no effect in Uno Platform targets, and FileTypeFilter has no effect for FolderPicker, they both must be set, otherwise the dialog crashes on UWP. No folder was picked or the dialog was cancelled. Var files = await pickedFolder.GetFilesAsync() StorageFolder pickedFolder = await folderPicker.PickSingleFolderAsync() Examples FolderPicker var folderPicker = new FolderPicker() įolderPicker.SuggestedStartLocation = PickerLocationId.ComputerFolder On platforms where the additional features are not supported yet, setting them will not have any effect. (1) - Only for the native file pickers - see WebAssembly section below On some platforms, you can further customize the file picking experience by utilizing additional properties: Feature (1) - Multiple implementations supported - see WebAssembly section below (2) - See iOS section below
💬 Partially supported (see below for more details).For detailed information see the next sections. The following table shows which file picker experiences are available across Uno Platform targets. File pickers allow the user to pick a folder or a file on the local file system so that the application can work with it.
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