FileExtensionVector Class
Definition
Important
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Represents a random-access collection of file name extensions.
public ref class FileExtensionVector sealed : IIterable<Platform::String ^>, IVector<Platform::String ^>/// [Windows.Foundation.Metadata.ContractVersion(Windows.Foundation.UniversalApiContract, 65536)]
class FileExtensionVector final : IIterable<winrt::hstring>, IVector<winrt::hstring>/// [Windows.Foundation.Metadata.ContractVersion(Windows.Foundation.UniversalApiContract, 65536)]
/// [Windows.Foundation.Metadata.MarshalingBehavior(Windows.Foundation.Metadata.MarshalingType.Agile)]
class FileExtensionVector final : IIterable<winrt::hstring>, IVector<winrt::hstring>[Windows.Foundation.Metadata.ContractVersion(typeof(Windows.Foundation.UniversalApiContract), 65536)]
public sealed class FileExtensionVector : IEnumerable<string>, IList<string>[Windows.Foundation.Metadata.ContractVersion(typeof(Windows.Foundation.UniversalApiContract), 65536)]
[Windows.Foundation.Metadata.MarshalingBehavior(Windows.Foundation.Metadata.MarshalingType.Agile)]
public sealed class FileExtensionVector : IEnumerable<string>, IList<string>Public NotInheritable Class FileExtensionVector
Implements IEnumerable(Of String), IList(Of String)- Inheritance
- Attributes
- Implements
-
IEnumerable<String> IIterable<Platform::String> IIterable<winrt::hstring> IIterable<T> IEnumerable<T> IList<String> IVector<Platform::String> IVector<winrt::hstring>
Windows requirements
| Device family |
Windows 10 (introduced in 10.0.10240.0)
|
| API contract |
Windows.Foundation.UniversalApiContract (introduced in v1.0)
|
Examples
The File picker sample demonstrates how to specify the file types that the user can see and pick from in the file picker.
FileOpenPicker openPicker = new FileOpenPicker();
openPicker.ViewMode = PickerViewMode.Thumbnail;
openPicker.SuggestedStartLocation = PickerLocationId.PicturesLibrary;
openPicker.FileTypeFilter.Add(".jpg");
openPicker.FileTypeFilter.Add(".jpeg");
openPicker.FileTypeFilter.Add(".png");
FileOpenPicker openPicker = new FileOpenPicker();
openPicker.ViewMode = PickerViewMode.List;
openPicker.SuggestedStartLocation = PickerLocationId.DocumentsLibrary;
openPicker.FileTypeFilter.Add("*");
Remarks
Collection member lists
For JavaScript, FileExtensionVector has the members shown in the member lists. In addition, FileExtensionVector supports a length property, members of Array.prototype, and using an index to access items.
Enumerating the collection in C# or Microsoft Visual Basic
A FileExtensionVector is enumerable, so you can use language-specific syntax such as foreach in C# to enumerate the items in the collection. The compiler does the type-casting for you and you won't need to cast to IEnumerable<String> explicitly. If you do need to cast explicitly, for example if you want to call GetEnumerator, cast to IEnumerable<T> with a String constraint.
Properties
| Size |
Gets the number of file name extensions in the collection. |
Methods
| Append(String) |
Appends a file name extension to the end of the collection. |
| Clear() |
Removes all file name extensions from the collection. |
| First() |
Retrieves an iterator that iterates through the file name extensions in the collection. |
| GetAt(UInt32) |
Retrieves the file name extension at the specified index in the collection. |
| GetMany(UInt32, String[]) |
Retrieves the file name extensions that start at the specified index in the collection. |
| GetView() |
Retrieves an immutable view of the collection of file name extensions. |
| IndexOf(String, UInt32) |
Retrieves the index of a specified file name extension in the collection. |
| InsertAt(UInt32, String) |
Inserts a file name extension into a collection at a specified index. |
| RemoveAt(UInt32) |
Removes the file name extension at the specified index in the collection. |
| RemoveAtEnd() |
Removes the last file name extension from the collection. |
| ReplaceAll(String[]) |
Replaces all file name extensions in the collection with the specified file name extensions. |
| SetAt(UInt32, String) |
Sets the file name extension at the specified index of the collection. |