Class SfUploader
The uploader component is useful to upload images, documents, and other files to server.
The component is the extended version of HTML5 that is uploaded with multiple file selection, auto upload, drag and drop, progress bar, preload files, and validation.
Inheritance
System.Object
Syncfusion.Blazor.SfBaseComponent
SfUploader
Assembly: Syncfusion.Blazor.dll
public class SfUploader : SfBaseComponent
Constructors
Declaration
Properties
Specifies the extensions of the file types allowed in the Uploader component and pass the extensions
with comma separators.
For example,if you want to upload specific image files, pass `AllowedExtensions` as ".jpg,.png".
Declaration
public string AllowedExtensions { get; set; }
Property Value
Type |
Description |
System.String |
|
Declaration
public bool AllowMultiple { get; set; }
Property Value
Type |
Description |
System.Boolean |
|
Configures the save and remove URL to perform the upload operations in the server asynchronously.
Declaration
public UploaderAsyncSettings AsyncSettings { get; set; }
Property Value
By default, the Uploader component initiates automatic upload when the files are added in upload queue.
If you want to manipulate the files before uploading to server, disable the AutoUpload property.
The buttons "upload" and "clear" will be hided from file list when AutoUpload property is true.
Declaration
public bool AutoUpload { get; set; }
Property Value
Type |
Description |
System.Boolean |
|
You can customize the default text of "browse, clear, and upload" buttons with plain text or HTML elements.
The buttons' text can be customized from localization also.
If you configured both Locale and Buttons property,the Uploader component considers the Buttons property value.
Declaration
public UploaderButtons Buttons { get; set; }
Property Value
Specifies the CSS class name that can be appended with root element of the Uploader.
One or more custom CSS classes can be added to a Uploader.
Declaration
public string CssClass { get; set; }
Property Value
Type |
Description |
System.String |
|
Specifies a boolean value that indicates whether the folder of files can be browsed in the Uploader component.
Declaration
public bool DirectoryUpload { get; set; }
Property Value
Type |
Description |
System.Boolean |
|
Specifies the drop target to handle the drag-and-drop upload.
By default, the Uploader creates wrapper around file input that will act as drop target.
Declaration
public string DropArea { get; set; }
Property Value
Type |
Description |
System.String |
|
Specifies the drag operation effect to the Uploader component.
Possible values are
Declaration
public DropEffect DropEffect { get; set; }
Property Value
Specifies a boolean value that indicates whether the Uploader allows the user to interact with it.
Declaration
public bool Enabled { get; set; }
Property Value
Type |
Description |
System.Boolean |
|
Enable or disable persisting Uploader state between page reloads. If enabled, the Files
state will be persisted.
Declaration
public bool EnablePersistence { get; set; }
Property Value
Type |
Description |
System.Boolean |
|
Enable or disable rendering Uploader in right to left direction.
Declaration
public bool EnableRtl { get; set; }
Property Value
Type |
Description |
System.Boolean |
|
Specifies the list of files that will be preloaded on rendering of Uploader component.
The property used to view and remove the uploaded files from server.
By default, the files are configured with uploaded successfully state. The following properties are mandatory to configure the preload files:
Declaration
public List<UploaderUploadedFiles> Files { get; set; }
Property Value
You can add the additional html attributes such as styles, class, and more to the root element.
If you configured both property and equivalent html attributes, then the component considers the property value.
Declaration
public Dictionary<string, object> HtmlAttributes { get; set; }
Property Value
Type |
Description |
System.Collections.Generic.Dictionary<System.String, System.Object> |
|
Specifies the id of the Uploader component.
Declaration
public string ID { get; set; }
Property Value
Type |
Description |
System.String |
|
You can add the additional input attributes such as disabled, value, and more to the root element.
If you configured both property and equivalent input attribute, then the component considers the property value.
Declaration
public Dictionary<string, object> InputAttributes { get; set; }
Property Value
Type |
Description |
System.Collections.Generic.Dictionary<System.String, System.Object> |
|
Specifies the global culture and localization of the Uploader component.
Declaration
public string Locale { get; set; }
Property Value
Type |
Description |
System.String |
|
Specifies the maximum allowed file size to be uploaded in bytes.
The property used to make sure that you cannot upload too large files.
Declaration
public double MaxFileSize { get; set; }
Property Value
Type |
Description |
System.Double |
|
Specifies the minimum file size to be uploaded in bytes.
The property used to make sure that you cannot upload empty files and small files.
Declaration
public double MinFileSize { get; set; }
Property Value
Type |
Description |
System.Double |
|
Specifies a boolean value that indicates whether the multiple files can be browsed or
dropped simultaneously in the Uploader component.
Declaration
public bool Multiple { get; set; }
Property Value
Type |
Description |
System.Boolean |
|
By default, the file Uploader component is processing the multiple files simultaneously.
If SequentialUpload property is enabled, the file upload component performs the upload one after the other.
Declaration
public bool SequentialUpload { get; set; }
Property Value
Type |
Description |
System.Boolean |
|
Specifies a boolean value that indicates whether the default file list can be rendered.
The property used to prevent default file list and design own template for file list.
Declaration
public bool ShowFileList { get; set; }
Property Value
Type |
Description |
System.Boolean |
|
Specifies the tab order of the component.
Declaration
public int TabIndex { get; set; }
Property Value
Type |
Description |
System.Int32 |
|
Specifies the HTML string that used to customize the content of each file in the list.
Declaration
public RenderFragment<FileInfo> Template { get; set; }
Property Value
Type |
Description |
Microsoft.AspNetCore.Components.RenderFragment<FileInfo> |
|
Methods
Declaration
protected override void BuildRenderTree(RenderTreeBuilder __builder)
Parameters
Type |
Name |
Description |
Microsoft.AspNetCore.Components.Rendering.RenderTreeBuilder |
__builder |
|
It is used to convert bytes value into kilobytes or megabytes depending on the size based
on binary prefix.
Declaration
public Task<string> BytesToSize(double bytes)
Parameters
Type |
Name |
Description |
System.Double |
bytes |
|
Returns
Type |
Description |
System.Threading.Tasks.Task<System.String> |
|
Stops the in-progress chunked upload based on the file data.
When the file upload is canceled, the partially uploaded file is removed from server.
specifies the files data to cancel the progressing file.
Declaration
public Task Cancel(FileInfo[] fileData = null)
Parameters
Type |
Name |
Description |
FileInfo[] |
fileData |
|
Returns
Type |
Description |
System.Threading.Tasks.Task |
|
Clear all the file entries from list that can be uploaded files or added in upload queue.
Declaration
Returns
Type |
Description |
System.Threading.Tasks.Task |
|
Get the data of files which are shown in file list.
specifies the file list item(li) index
Declaration
public Task<List<FileInfo>> GetFilesData(Nullable<double> index = null)
Parameters
Type |
Name |
Description |
System.Nullable<System.Double> |
index |
|
Returns
Type |
Description |
System.Threading.Tasks.Task<System.Collections.Generic.List<FileInfo>> |
|
Declaration
protected override Task OnInitializedAsync()
Returns
Type |
Description |
System.Threading.Tasks.Task |
|
Overrides
Syncfusion.Blazor.SfBaseComponent.OnInitializedAsync()
Declaration
protected override Task OnParametersSetAsync()
Returns
Type |
Description |
System.Threading.Tasks.Task |
|
Pauses the in-progress chunked upload based on the file data.
specifies the files data to pause from uploading.
Set true if used custom UI.
Declaration
public Task Pause(List<FileInfo> fileData = null, Nullable<bool> custom = null)
Parameters
Type |
Name |
Description |
System.Collections.Generic.List<FileInfo> |
fileData |
|
System.Nullable<System.Boolean> |
custom |
|
Returns
Type |
Description |
System.Threading.Tasks.Task |
|
Declaration
protected void PropertyInitialized()
Declaration
protected void PropertyParametersSet()
Remove the uploaded file from server manually by calling the remove URL action.
If you pass an empty argument to this method, the complete file list can be cleared,
otherwise remove the specific file based on its argument ("file_data").
specifies the files data to remove from file list/server.
Set true if the component rendering with customize template.
Set true if files remove without removing event.
Set false, to post file name only to the remove action.
Declaration
public Task Remove(FileInfo[] fileData = null, Nullable<bool> customTemplate = null, Nullable<bool> removeDirectly = null, Nullable<bool> postRawFile = null, object args = null)
Parameters
Type |
Name |
Description |
FileInfo[] |
fileData |
|
System.Nullable<System.Boolean> |
customTemplate |
|
System.Nullable<System.Boolean> |
removeDirectly |
|
System.Nullable<System.Boolean> |
postRawFile |
|
System.Object |
args |
|
Returns
Type |
Description |
System.Threading.Tasks.Task |
|
Resumes the chunked upload that is previously paused based on the file data.
specifies the files data to resume the paused file.
Declaration
public Task Resume(FileInfo[] fileData = null, Nullable<bool> custom = null)
Parameters
Type |
Name |
Description |
FileInfo[] |
fileData |
|
System.Nullable<System.Boolean> |
custom |
|
Returns
Type |
Description |
System.Threading.Tasks.Task |
|
Retries the canceled or failed file upload based on the file data.
specifies the files data to retry the canceled or failed file
Set true to retry from canceled stage and set false to retry from initial stage.
Declaration
public Task Retry(FileInfo[] fileData = null, Nullable<bool> fromcanceledStage = null, Nullable<bool> custom = null)
Parameters
Type |
Name |
Description |
FileInfo[] |
fileData |
|
System.Nullable<System.Boolean> |
fromcanceledStage |
|
System.Nullable<System.Boolean> |
custom |
|
Returns
Type |
Description |
System.Threading.Tasks.Task |
|
Allows you to sort the file data alphabetically based on its file name clearly.
specifies the files data for upload
Declaration
public Task<List<FileInfo>> SortFileList(FileInfo[] filesData = null)
Parameters
Type |
Name |
Description |
FileInfo[] |
filesData |
|
Returns
Type |
Description |
System.Threading.Tasks.Task<System.Collections.Generic.List<FileInfo>> |
|
Allows you to call the upload process manually by calling save URL action.
To process the selected files (added in upload queue), pass an empty argument otherwise
upload the specific file based on its argument.
specifies the files data for upload.
Declaration
public Task Upload(FileInfo[] files = null, Nullable<bool> custom = null)
Parameters
Type |
Name |
Description |
FileInfo[] |
files |
|
System.Nullable<System.Boolean> |
custom |
|
Returns
Type |
Description |
System.Threading.Tasks.Task |
|