You can restrict the selected files based on predefined rules for their size and/or extension.
When the FileSelect is bound to a model through the
ngModeldirective, the files which do not correspond to the restrictions will not be added to the model.
The FileSelect supports three types of file restrictions:
You can define the file types that are eligible by using the allowedExtensions property. The files with extensions, which are not included in the list will be displayed as invalid by the FileSelect. The
allowedExtensions option recognizes entries of both
.type (for example,
.xls, and others) and
type (for example,
xls, and others) values.
The following example allows selecting
.png file types only.
You can restrict the maximum allowed file size (in bytes) by using the maxFileSize property. If the selected file exceeds the maximum size, an error message will be displayed.
You can restrict the minimum allowed file size (in bytes) by using the minFileSize property. If the selected file is less than the minimum size, an error message will be displayed.
Internet Explorer versions up to and including version 9 provide no information on the file size. As a result, the FileSelect restriction for the
maxFileSize options does not work.