In SharePoint, View is a virtual representation of a set of data from a specific list. We can programmatically create and update views for a list. Provided below is an example in C#.Net which explains the approach of creating and updating views. The code is divided in to 2 parts i.e. Part I - describes how to create a view by assigning specific fields from a list, and Part II - describes how to update an existing view by adding few more fields to it.

using (SPSite oSPsite = new SPSite("http://website_url/")) {     oSPsite.AllowUnsafeUpdates = true;     using (SPWeb oSPWeb = oSPsite.OpenWeb())     {         oSPWeb.AllowUnsafeUpdates = true;         /* get the list instance by list name */         SPList list = oSPWeb.Lists["List_Name"];         /* ======== Part I (create a view) ======== */         // add the field names to the string collection         StringCollection strViewFields = new StringCollection();         strViewFields.Add("FullName");         strViewFields.Add("Address");         strViewFields.Add("City");         strViewFields.Add("State");         // create a standard view with the set of fields defined in the collection         list.Views.Add("View_Name", strViewFields, String.Empty,             100, true, false, SPViewCollection.SPViewType.Html, false);         /* ==== End Part I ==== */         /* ==== Part II (add fields to an existing view) ==== */         // get the view instance by view display name         SPView view = list.Views["Existing_View_Name"];         // add fields to the view         view.ViewFields.Add("Zip");         view.ViewFields.Add("Country");         // update view for new fields         view.Update();         /* ==== End Part II ==== */         /* update the list */         list.Update();         oSPWeb.AllowUnsafeUpdates = false;     }     oSPsite.AllowUnsafeUpdates = false; }

Author: Sreekanth Reddy M