apex:inputFile Component

The apex:inputFile component is a Visualforce input component used to create a file input element, allowing users to upload files.

Syntax

The basic syntax for using apex:inputFile is as follows:

<apex:inputFile value="{!uploadedFile}" />

Example

Consider the following example that allows users to upload a file:

<apex:page controller="FileUploadController">
    <apex:form >
        <apex:inputFile value="{!uploadedFile}" />
        <apex:commandButton value="Upload File" action="{!uploadFile}" />
    </apex:form>
</apex:page>

In the example above, the apex:inputFile component is used to create a file input element to allow users to select a file to upload. The value attribute is used to bind the selected file to a controller variable named uploadedFile. The upload is triggered by clicking the apex:commandButton component.

Output

The output of the apex:inputFile component is a file input element, which allows users to browse and select a file to upload.

Explanation

The apex:inputFile component is used to create a file input element, which is bound to a controller variable using the value attribute. When a user selects a file to upload, the selected file is saved to the controller variable, which can be accessed by the controller method responsible for processing the file upload.

Use

The apex:inputFile component is used to create file input elements, which allow users to upload files. This component is useful in scenarios where you want to allow users to upload files to the Salesforce platform.

Important Points

• The apex:inputFile component can only be used within a Visualforce form tag.
• The maximum file size that can be uploaded is determined by the maxFileSize attribute of the apex:page component. By default, the maximum file size is set to 10 MB.
• The contentType attribute can be used to restrict the types of files that can be uploaded.

Summary

The apex:inputFile component is a Visualforce input component used to create a file input element, allowing users to upload files. This component is useful in scenarios where you want to allow users to upload files to the Salesforce platform. The selected file is bound to a controller variable, which can be accessed by the controller method responsible for processing the file upload.