How to Create – Update – Delete SharePoint Views Programmatically?

using (SPSite site = new SPSite("https://crescent.sharepoint.com"))
{
	using (SPWeb web = site.OpenWeb())
	{
		//Get the List
		SPList ProjectDocuments = web.Lists["Client Documents"];

		//Set the View fields
		StringCollection ViewFields = new StringCollection();
		ViewFields.Add("Type");
		ViewFields.Add("Name");

		//Set the View Filter and Sort order
		string viewQuery = @" <Where><Eq><FieldRef Name='Status' /><Value Type='Choice'>In Progress</Value></Eq></Where><OrderBy><FieldRef Name='Modified' Ascending='False' /></OrderBy> ";

		//Create the view
		ProjectDocuments.Views.Add("Proposal Documents", ViewFields, ViewQuery, 100, true, false);

		//Update the List
		ProjectDocuments.Update();
	}
}

//Get the List
SPList ProjectDocuments = web.Lists["Project Documents"];

//Get the view 
SPView ProjectDocumentsDV = ProjectDocuments.DefaultView;
// Or it can be: SPView oView = oList.Views["View-Name"];

//Delete all fields from the view
ProjectDocumentsDV.ViewFields.DeleteAll();
//Add "Type" and "Name" fields
ProjectDocumentsDV.ViewFields.Add("Type");
ProjectDocumentsDV.ViewFields.Add("Name");

//Update the view
ProjectDocumentsDV.Update();
//Update the List
ProjectDocuments.Update();

SPView ProjectDocumentsView = ProjectDocuments.DefaultView;

//Get the fields from a View
SPViewFieldCollection ViewFieldColl = ProjectDocumentsView.ViewFields;

foreach (string ViewField in ViewFieldCol)
{
	Console.WriteLine("Field Name : " + ViewField);
}

//Get the List
SPList ProjectDocuments = web.Lists["Project Documents"];

//Get the view 
SPView ProjectDocumentsView = ProjectDocuments.DefaultView;

//Delete the views
ProjectDocuments.Views.Delete(ProjectDocumentsView.ID);
ProjectDocuments.Update();