SharePoint 2007 : Create Custom List Action entry and attach the dll to it.

Create a new SharePoint empty project. Create a hierarchy in that like below.

Element.XMl

Code Snippet

1. <?xml version="1.0" encoding="utf-8" ?>
2. <Elements xmlns="http://schemas.microsoft.com/sharepoint/">
3.   <CustomAction
4.     Id="{B08087EF-B682-4fb4-870B-A7CC3F1FDF0B}"
5.     Title="Slide Reorder"
6.     RegistrationType="List"
7.     GroupId="ActionsMenu"
8.     Location="Microsoft.SharePoint.StandardMenu"
9.     Sequence="1000"
10.   RegistrationId="2100"
11.     Rights="EditListItems"
12.     ControlAssembly="GMISlideLibraryFeature,Version=1.0.0.0, Culture=neutral, PublicKeyToken=9f4da00116c38ec5"
13.     ControlClass="GMISlideLibraryFeature.SlideReorderAction">
14.   </CustomAction>
15. </Elements>

Code Snippet

1. class SlideReorderAction : WebControl
2.     {
3.         private MenuItemTemplate _MenuTemplate;
5.         protected override  void OnLoad(EventArgs e)
6.         {
7.             EnsureChildControls();
8.             base.OnLoad(e);
9.         }
11.         protected override void CreateChildControls()
12.         {
13.             base.CreateChildControls();
14.             ListViewWebPart oListView = FindListView(Parent);
16.             if (oListView == null) return;
17.             {
18.                 SPWeb site = SPContext.Current.Web;
19.                 site.AllowUnsafeUpdates = true;
20.               
21.                 _MenuTemplate = new MenuItemTemplate
22.                 {
23.                     Text = "Slide Reorder",
24.                     Description = "This feature allows Site Owners to add a Change Order menu item to the Slide Library",
25.                     ImageUrl = "/_layouts/images/NEWITEM.GIF",
26.                     ClientOnClickNavigateUrl = "javascript:window.location= '" + site.Url + "/_layouts/GMISlideReorder/SlideReorder.aspx?List=" + oListView.ListName + "&Source=' + window.location"
28.                 };
30.                 this.Controls.Add(_MenuTemplate);
31.             }
32.         }
34.         private ListViewWebPart FindListView(Control oParent)
35.         {
36.             if (oParent is ListViewWebPart) return (ListViewWebPart)oParent;
37.             if (oParent.Parent == null) return null;
39.             return FindListView(oParent.Parent);
40.         }
42.     \

VB.NET : SharePoint Solution Template in Visual Studio

When we create a solution for SharePoint(like a feature) then when we use SharePoint Empty project template in visual studio 2008 then it creates a default namespace VeWSE instead of the solution name.

default namespace

So, when we activate feature or inherit another class in that then we have get the error “systemexceptionempty”. Because we provide

ControlAssembly="CustomActionControlClass, Version=1.0.0.0, Culture=neutral, PublicKeyToken=abf59b3ca9443f64"
ControlClass="CustomActionControlClass.MyCustomAction"
in element.xml file. And the actual namespace is VeWSE.Namespace.ClassName.

Workaround

Delete the default namespace from that project properties.