Sharepoint List Attachments in a Webpart : The Solution

It's not a headache until you can do without it, but to use the sharepoint's attachment controls can be a pain in you know what. Try the solution below and save your self from same.

~Adding attachment Functionality in a Web Part.

//Attachment Controls
//Add the Attachment Controls in the webpart, the attachment upload is the //control to upload and AttachmentsField displays the list of all attachments
AttachmentButton btnAttach;
AttachmentUpload uploadAttach;
AttachmentsField fieldAttach;
HiddenField hDeleteAttachs;
protected override void RenderWebPart(HtmlTextWriter output)
//Add the javascript which will handle the list of attachments that have been //marked as deleted and add them to the Hidden Fiels, Actually its adds the //GUID of the Attachment(the delete attachment function use that)

output.Write("function RemoveAttachmentFromServer(guid, bRecycleBinEnabled){");
output.Write("var L_ConfirmDelete_TXT='Are you sure you want to delete this attachment?';");
output.Write("var L_ConfirmRecycle_TXT='Are you sure you want to send this attachment to the site Recycle Bin?';");
output.Write("var strWarning;document.getElementById('"+hDeleteAttachs.ClientID+"').value += guid + ';';");
output.Write("if (bRecycleBinEnabled){");
output.Write(" strWarning=L_ConfirmRecycle_TXT; } else { strWarning=L_ConfirmDelete_TXT; }");
output.Write("if (confirm(strWarning)) {");
output.Write("if (document.getElementById('idAttachmentsTable').rows.length==0){");
output.Write("document.getElementById('idAttachmentsRow').style.display='none';} }} fuction gotoURL(sURL){window.location=sURL; return false;}");

//Render all the controls
//Looks simple aah! But remember to include the attachment button in a span //with id “part1”
// Yes, that is required, otherwise keep expermenting…..
//The Attachment Upload control has to be in a control with ID = “idAttachmentRow”
//Replace '<' with <
//P.S. : This is one of the most important aspect

output.Write("’<’span id='part1'’>’");
output.Write("’<’/td’>’<’/tr’>’<’tr’>’<’td id='idAttachmentsRow'’>’");

//Create Controls

protected override void CreateChildControls()
//Attachment Controls
btnAttach = new AttachmentButton();
btnAttach.ListId = list.ID;
btnAttach.ControlMode = SPControlMode.New;
btnAttach.Text = "Add Attachment";
fieldAttach = new AttachmentsField();
fieldAttach.ListId = list.ID;
fieldAttach.FieldName = "Attachments";
fieldAttach.ControlMode = SPControlMode.New;
uploadAttach = new AttachmentUpload();
uploadAttach.ListId = list.ID;
uploadAttach.ControlMode = SPControlMode.New;
//Hidden Field as mentioned above
hDeleteAttachs = new HiddenField();
hDeleteAttachs.ID = "hHiddenFields";
//Submit ,call attachment functions, First Add then delete
void btnSubmit_Click(object sender, EventArgs e)
//That's the way it is
AddAttachments(ref item);
DeleteAttachments(ref list, ref item);
//Delete the Attachments, Function
void DeleteAttachments(ref SPList list, ref SPListItem item)
#region Delete
SPFileCollection files = null;
SPFolder itemFolder = null;
//Get tha Attachment Folder
string strAttchmentFolderURL = item.Attachments.UrlPrefix + "/" + item.ID.ToString();
if (list.RootFolder.SubFolders.Count > 0)
if (list.RootFolder.SubFolders["Attachments"] != null)
itemFolder = list.RootFolder.SubFolders["Attachments"];
//Read the hidden field contaning the list of deleted attchments GUID
if (!hDeleteAttachs.Value.Equals(""))
string strValue = hDeleteAttachs.Value;
string[] strIDs = strValue.Split(';');
for (int i = 0; i < strID.Length; i++)
string strTempID = strIDs[i];
//I know there is better way to remove characters
strTempID = strTempID.Replace("{", "");
strTempID = strTempID.Replace("}", "");
//Get all the files in Attachment Folder that matches the GUID
#region getFiles
if (itemFolder.SubFolders[strAttchmentFolderURL] != null)
files = itemFolder.SubFolders[strAttchmentFolderURL].Files;
foreach (SPFile file in files)
if (strTempID.ToLower().Equals(file.UniqueId.ToString().ToLower()))
//Delete the file finally
//Add attchments
void AddAttachments(ref SPListItem item)
for (int i = 0; i < (Page.Request.Files.Count - 1); i++)
//Get the list of files for attachments
HttpPostedFile newAttach = Page.Request.Files[i];
byte[] fileContents = new byte[newAttach.ContentLength - 1];
newAttach.InputStream.Seek(0, System.IO.SeekOrigin.Begin);
newAttach.InputStream.Read(fileContents, 0, newAttach.ContentLength - 1);
System.IO.FileInfo fInfo = new System.IO.FileInfo(newAttach.FileName);
item.Attachments.Add(fInfo.Name, fileContents);
catch { continue; }
catch {
That’s all folks !

Microsoft's (SAAS) Software-As-A-Service business

Stephen Elop, president of Microsoft's $18.9 billion Business Division, this week reiterated a bold prediction about the future of Microsoft's software-as-a-service business. Microsoft foresees half of Exchange, SharePoint, and Dynamics CRM revenue coming from online versions of those products within five years.

Elop was in New York meeting with analysts and customers, following Microsoft's announcement three weeks ago of general availability of Exchange Online and SharePoint Online. Microsoft's Office Communications Online service goes into testing early next year. Its Dynamics CRM Online has been available for several months.

If you put Elop's prediction of 50% of Exchange/SharePoint/CRM revenue coming from online services into the context of Microsoft's current business, Microsoft's cloud should become a billion-dollar operation in short order. SharePoint alone is a $1 billion business today, growing at 35% annually. At that growth rate, SharePoint in the cloud would be a $1 billion business within three years, if Elop's forecast holds true. Add in revenue from Exchange, Dynamics CRM, Office Communications, and other online services and Microsoft gets to the $1 billion cloud revenue mark within, say, 24 months.

Whether Microsoft can deliver on its ambitious cloud revenue projection remains to be seen, but it's not the first time I've heard the "50% in five years" forecast. Senior VP Chris Caposella made the same projection earlier this year, so company management is on the same page. Given the sheer size of Microsoft's application business -- the Business Division is expected to grow to $20 billion this fiscal year -- even modest success will translate into a rainfall of cloud revenue.

Thanks  John Foley for the text.