Creating a simple Event Receiver in SharePoint 2013

Create an empty SharePoint 2013 project in Visual Studio 2012. In the project, select add new item and select Event Receiver

Select the type of event receiver you need to add, and select the events you need to handle.

 Here, I have created the Department library to add and maintain documents and also created DocumentLog list to log the changes happening to the library.

In the list I have three columns, Title, Action & DateAndTime in order to catalog the changes happening to the library.

 

Back to the SharePoint project. Now go to the event receiver .cs file and you'll get a bunch of methods base on your selection during event receiver creation. Edit the code as below to implement the logic. Note that the ItemAdded method is used instead of the ItemAdding method.

 

public override void ItemAdded(SPItemEventProperties properties)
        {
            //base.ItemAdded(properties);
            using (SPWeb web = properties.OpenWeb())
            {
                try
                {
                    SPList list = web.Lists["DocumentLog"];
                    SPListItem newItem = list.Items.Add();
                    newItem["Title"] = properties.ListItem.Name;
                    newItem["DateAndTime"] = System.DateTime.Now;
                    newItem["Action"] = "Item Added";
                    newItem.Update();
                }
                catch (Exception ex)
                {
                    throw ex;
                }
            }
        }

public override void ItemUpdating(SPItemEventProperties properties)
        {
            //base.ItemUpdating(properties);
            using (SPWeb web = properties.OpenWeb())
            {
                try
                {
                    SPList list = web.Lists["DocumentLog"];
                    SPListItem newItem = list.Items.Add();
                    newItem["Title"] = properties.ListItem.Name;
                    newItem["DateAndTime"] = System.DateTime.Now;
                    newItem["Action"] = "Item Updated";
                    newItem.Update();
                }
                catch (Exception ex)
                {
                    throw ex;
                }
            }
        }

public override void ItemDeleting(SPItemEventProperties properties)
        {
            //base.ItemDeleting(properties);
            using (SPWeb web = properties.OpenWeb())
            {
                try
                {
                    SPList list = web.Lists["DocumentLog"];
                    SPListItem newItem = list.Items.Add();
                    newItem["Title"] = properties.ListItem.Name;
                    newItem["DateAndTime"] = System.DateTime.Now;
                    newItem["Action"] = "Item Deleted";
                    newItem.Update();
                }
                catch (Exception ex)
                {
                    throw ex;
                }
            }
        }