Before you can deploy sandboxed solutions to the Sharepoint Server, your server must be configured for this. To configure, open Sharepoint 2010 Central Administration site and choose System Settings > Services on Server. Locate Microsoft Sharepoint Foundation User Code Service and check its status. If it's stopped, click the start hyperlink.

Now, web can create our first sandboxed solution.

Step by step instructions :

• Open Visual Studio 2010 and choose to create a new project. Pick Empty Project under Visual C# > Sharepoint > 2010 template group.
• Name your project as "SandboxedWebPart"
  
  
  
• Choose your debugging site URL and check "Deploy as a sandboxed solution".
• In Visual Studio 2010 Solution Explorer right click the solution name and select Add > New Item. Add a Web Part to your project.
• Expand features, right click Feature1 and choose View Designer. In the designer, verify the Scope. It should be set to site.
  
  
  
• In WebPart1.cs, add the following code in CreateChildControls method
  
  

  protected override void CreateChildControls()
  {
      Label message = new Label();
      Controls.Add(message);
  
      Controls.Add(new WebControl(HtmlTextWriterTag.Br));
  
      Button testButton1 = new Button();
      testButton1.Text = "Test 1";
      testButton1.Click += delegate
      {
          message.Text = String.Format("This site contains {0} lists",
              SPContext.Current.Web.Lists.Count);
      };
      Controls.Add(testButton1);
  }
  

• Then deploy it. (Right click solution name and select "Deploy")
• To show your web part, open your browser and navigate to the site. On the ribbon, select Page tab and choose Edit Page. Select a web part zone and add your web part.

There wasn’t any method for managing, editing or downloading documents together in a set, because unfortunately the Folders didn’t have this capability. If I’d like to simplify the document sets, there are very smart folders.

Atalay Aktaş works on Microsoft Turkey Office as Business Productivity Solutions Specialist. He shares a presentation that contains general information about Sharepoint and Office 2010 product family. Presentation language is Turkish, includes 50 slide and totaly 14.8 MB on SkyDrive.

You can download it via this link

Based on customer requests for more robust compliance features, Microsoft has improved the validation capabilities of lists and libraries. Validation is now supported at both list and item levels.

For instance, a list owner can configure a validation to disallow the start date of an event item (stored in one column) to be after the end date of the event (stored in another column). If a user enters a start date that is later than the specified end date they will be presented with an error message when he or she attempts to save the item.

In another example, people can specify a column in a list as unique so that a contact list may not contain two entries with the same email address.

In Sharepoint 2010 Search Settings>Content Sources screen you can see new types of Content Sources that allows you to define different content sources.

In Sharepoint 2010 two new features for creating view added. In create or modify view screen you can see "Inline Editing" and "Tabular View" sections.