Uploading Multiple Attachments into Salesforce

Here is a Simple Way to attach Multiple attachments into salesforce at once , through this you can attach 10 files at a time. In this i have used account as a standard controller so this works with respect to Account Records, all thst you have to do is to pass the id of the record so the files gets attached to the particular record and gets saved in the Notes & Attachments related list of that particular record.
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VisualForce Code

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<apex:page standardController="Account" extensions="MultipleUploadController">
    <apex:form>
        <apex:pageBlock title="Upload Multiple Attachment to Object">
         
            <apex:pageBlockButtons>
                <apex:commandButton value="Upload"  action="{!SaveAttachments}"/>
            </apex:pageBlockButtons>
         
            <apex:pageMessages id="MSG"/>
            <apex:actionFunction name="ChangeCount" action="{!ChangeCount}"/>
         
            <apex:pageblocksection>
                         
                <apex:pageBlockSectionItem>
                    <apex:outputLabel value="How many files you want to upload?"/>
                    <apex:selectList onchange="ChangeCount() ;" multiselect="false" size="1" value="{!FileCount}">
                        <apex:selectOption itemLabel="--None--" itemValue=""/>
                        <apex:selectOptions value="{!filesCountList}"/>
                    </apex:selectList>
                </apex:pageBlockSectionItem>
         
            </apex:pageblocksection>
         
            <apex:pageBlockSection title="Select Files" rendered="{!IF(FileCount != null && FileCount != '', true , false)}">
                <apex:repeat value="{!allFileList}" var="AFL">
                    <apex:inputfile value="{!AFL.body}" filename="{!AFL.Name}" />
                 

                </apex:repeat>
            </apex:pageBlockSection>
         
        </apex:pageBlock>
    </apex:form>
</apex:page>
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Controller
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public class MultipleUploadController
{
    //Picklist of tnteger values to hold file count
    public List<SelectOption> filesCountList {get; set;}
    //Selected count
    public String FileCount {get; set;}
 
    public List<Attachment> allFileList {get; set;}
 
    public MultipleUploadController(ApexPages.StandardController controller)
    {
        //Initialize
        filesCountList = new List<SelectOption>() ;
        FileCount = '' ;
        allFileList = new List<Attachment>() ;
     
        //Adding values count list - you can change this according to your need
        for(Integer i = 1 ; i < 11 ; i++)
            filesCountList.add(new SelectOption(''+i , ''+i)) ;
    }
 
    public Pagereference SaveAttachments()
    {
        String accId = System.currentPagereference().getParameters().get('id');
        if(accId == null || accId == '')
            ApexPages.addmessage(new ApexPages.message(ApexPages.Severity.ERROR,'No record is associated. Please pass record Id in parameter.'));
        if(FileCount == null || FileCount == '')
            ApexPages.addmessage(new ApexPages.message(ApexPages.Severity.ERROR,'Please select how many files you want to upload.'));

        List<Attachment> listToInsert = new List<Attachment>() ;
     
        //Attachment a = new Attachment(parentId = accid, name=myfile.name, body = myfile.body);
        for(Attachment a: allFileList)
        {
            if(a.name != '' && a.name != '' && a.body != null)
                listToInsert.add(new Attachment(parentId = accId, name = a.name, body = a.body)) ;
        }
     
        //Inserting attachments
        if(listToInsert.size() > 0)
        {
            insert listToInsert ;
            ApexPages.addmessage(new ApexPages.message(ApexPages.Severity.INFO, listToInsert.size() + ' file(s) are uploaded successfully'));
            FileCount = '' ;
        }
        else
            ApexPages.addmessage(new ApexPages.message(ApexPages.Severity.ERROR,'Please select at-least one file'));
         
        return null;
    }
 
    public PageReference ChangeCount()
    {
        allFileList.clear() ;
        //Adding multiple attachments instance
        for(Integer i = 1 ; i <= Integer.valueOf(FileCount) ; i++)
            allFileList.add(new Attachment()) ;
        return null ;
    }
}
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