Listing 1: Get items within a folder

// get the current site
SPWeb site = SPControl.GetContextWeb(Context);

// set the library and view to display
string docLibName = "Shared Documents";
string viewName = "All Documents";

// get the folder
SPFolder docLibFolder = site.Folders[docLibName];

// get library and view
SPDocumentLibrary docLib = (SPDocumentLibrary)site.Lists[docLibName];
		SPView docLibView = docLib.Views["View_Name"];

// get all the items in the folder
SPListItemCollection docLibItems = docLib.GetItemsInFolder(docLibView, docLibFolder);

// loop through and display the names of the items
foreach (SPListItem item in docLibItems){
  Label1.Text += "Name: " + item["Name"] + "
";
}

Listing 2: Handling Document Library Events

void IListEventSink.OnEvent(SPListEvent listEvent){
  // check type and handle a new document
  if ((listEvent.Type == SPListEventType.Insert)){
    // check to see if we have an email server
    if (SPUtility.IsEmailServerSet(spWeb)){
      // mail user to notify new document
	SpUtility.SendEmail(spWeb, true, true, "someone@somecompany.com",
	"New Document Added", listEvent.UserLoginName + " has added a new document to
	the" + listEvent.Title + " document library.");
    }
  }
}

Listing 3: Retrieving Sub Web Meta Data

private string GetSubWebs(){

 // get this web
 SPWeb oSPWeb = SPControl.GetContextWeb(Context);
 // retrieve all webs for the current user
 SPWebCollection oMyWebs = oSPWeb.GetSubwebsForCurrentUser();


 // create StringBuilder to store HTML output
 StringBuilder sWebOut = new StringBuilder();
 //get the date now for comparison in loop
 DateTime dtCurrent = DateTime.Now;
 // create Table
 sWebOut.AppendFormat("<TABLE>");

 foreach (SPWeb oMyWeb in oMyWebs)
 {
  sWebOut.Append("<TR>");
  // show title with link 
  sWebOut.AppendFormat("<TD><a href='{0}' title='{1}'>{2}</A></TD>",
    SPEncode.UrlEncodeAsUrl(oMyWeb.Url),oMyWeb.Description,
    SPEncode.HtmlEncode(oMyWeb.Title));
  // display author with mailto if configured in tool part
  if (bShowAuthor)
  sWebOut.AppendFormat("<TD><a href='mailto:{0}'>{1}</A>",
    oMyWeb.Author.Email, SPEncode.HtmlEncode(oMyWeb.Author.Name) +
    "</TD>");
  // get web type (sites, workspaces, etc) if configured in tool part
  sWebOut.AppendFormat("<TD>{0}</TD>", GetWebType(oMyWeb));
  // display date created if configured in tool part
  sWebOut.AppendFormat("<TD>{0}</TD>",
    SPEncode.HtmlEncode(SPUtility.TimeDeltaAsString(oMyWeb.Created,
    dtCurrent)));
  sWebOut.Append("</TR>");

 }
 sWebOut.Append("</Table>");
 return sWebOut.ToString();
}

//
protected override void RenderWebPart(HtmlTextWriter output){
  output.Write(GetSubWebs());
}

Listing 4: Custom Tool Part Class

// Custom Tool Part
public class SubSitesToolPart : ToolPart{
  Label displayPrompt;
  CheckBox showURL;
  CheckBox showDescription;

  public SubSitesToolPart(){
    this.Title="Sub Sites Properties";
  }

  // Create controls needed for UI within Tool Part
  protected override void CreateChildControls(){
    SubSites wp = (SubSites)ParentToolPane.SelectedWebPart;
    displayPrompt = new Label();
    displayPrompt.Text = "Display columns";
    displayPrompt.Font.Bold = true;
    Controls.Add(displayPrompt);

    // Show ToolPart URL Checkbox
    showURL = new CheckBox();
    showURL.Text = wp.sURLTitle;
    showURL.Checked = wp.bShowURL;
    Controls.Add(showURL);

    // Show ToolPart Description Checkbox
    showDescription = new CheckBox();
    showDescription.Text = wp.sDescriptionTitle;
    showDescription.Checked = wp.bShowDescription;
    Controls.Add(showDescription);


  }

  // Called by the ToolPart to apply changes to the selected web part.
  public override void ApplyChanges(){
    SubSites wp = (SubSites)ParentToolPane.SelectedWebPart;
    wp.bShowURL = showURL.Checked;
    wp.bShowDescription = showDescription.Checked;
  }


  // Overridden method responsible for rendering all non-toolpane
  // parts of the ToolPart.
  protected override void RenderToolPart(HtmlTextWriter output){
    output.Write("<div style='padding:5px;width:100%'>");
    foreach (Control oControl in Controls){
      oControl.RenderControl(output);
      output.Write("<br>");
    }
    output.Write("</div>");
  }
}

Listing 5: Gettoolparts Method

///	called by part to display custom Tool Parts
public override ToolPart[] GetToolParts(){
  return new ToolPart[] { new SubSitesToolPart(),
                          new WebPartToolPart()};
}