Visualforce File Upload - for Any SObject

How to Upload Attachment to any SObject using Visualforce

This article explains how you can upload file attachments to any SOobject using Visualforce.

Page:

<apex:page standardController="YourSObjectName" extensions="VFFileUpload">
  <apex:form>
      <apex:pageBlock title="Upload Attachment">
            <apex:inputFile style="width:100%" id="fileToUpload" value="{!fileBody}" filename="{!fileName}" />
            <apex:commandButton value="Upload Attachment" action="{!UploadFile}"/>
       </apex:pageBlock>
  </apex:form>
</apex:page>

Class:

public class VFFileUpload
{
    public Id recId
    {    get;set;    }
    
    public VFFileUpload(ApexPages.StandardController ctlr)
    {
       recId = ctlr.getRecord().Id;     
    }
    
    public string fileName 
    {    get;set;    }
    
    public Blob fileBody 
    {    get;set;    }
  
    public PageReference UploadFile()
    {
        PageReference pr;
        if(fileBody != null && fileName != null)
        {
          Attachment myAttachment  = new Attachment();
          myAttachment.Body = fileBody;
          myAttachment.Name = fileName;
          myAttachment.ParentId = recId;
          insert myAttachment;
           pr = new PageReference('/' + myAttachment.Id);
           pr.setRedirect(true);
           return pr;
        }
        return null;
    }    
}

You can use the above code for any object whether it is standard or custom. Happy coding!

Thanks,
Srinivas,
Technology Evangelist,
Trekbin Technologies,
www.trekbin.com