Upload file via input control and empty File Collection in request

when we uplaod files via html input control, sometimes we get Empty file collection on server side, i faced this issue in one of my Sharepoint projects and resolved with adding

Page.Form.Enctype = "multipart/form-data";

in page load.

http://stackoverflow.com/questions/1226612/sharepoint-webpart-upload-file-whitout-using-runat-server

Error occurred in deployment step ‘Add Solution’: A feature with ID has already been installed in this farm

http://msbuzzz.wordpress.com/2011/09/07/error-occurred-in-deployment-step-add-solution-a-feature-with-id-has-already-been-installed-in-this-farm/

How to create Custom Views on Surveys

http://netindonesia.net/blogs/hasanthi/archive/2009/05/21/how-to-create-custom-views-on-surveys.aspx

http://www.endusersharepoint.com/2008/04/02/endusersharepointcom-customized-views-of-a-sharepoint-survey/

SharePoint: Document Library

http://blogs.techrepublic.com.com/msoffice/?p=217

Use Microsoft Chart Controls for .NET Framework in a SharePoint web site

Using Chart Control in Sharepoint

Essential SharePoint Programming Tasks

http://msdn.microsoft.com/en-us/library/ee534973.aspx

How to: Return Items from a List

http://msdn.microsoft.com/en-us/library/ms456030.aspx

How to: Read the Value of a Field in a List Item

http://msdn.microsoft.com/en-us/library/ff521580.aspx

Best Practices: Common Coding Issues When Using the SharePoint Object Model

http://msdn.microsoft.com/en-us/library/bb687949(v=office.12).aspx