Programmatically modify Library/List Page

hi dear yavuz

bellow is complete code for your needs

PublishingPage newPage = ProvisionPage(web, "Blank Web Part Page", "Home", "Page Description", "Default.aspx");
            SPFile pageFile = newPage.ListItem.File;
            ContentByQueryWebPart cqwp = new ContentByQueryWebPart(string.Empty, string.Empty, "");
            cqwp.Title = "cqwp";
            SPLimitedWebPartManager wpm = web.Web.GetLimitedWebPartManager(pageFile.Url, System.Web.UI.WebControls.WebParts.PersonalizationScope.Shared);

            wpm.AddWebPart(cqwp, "Top", 0);
            wpm.SaveChanges(cqwp);
            if (pageFile.CheckOutType != SPFile.SPCheckOutType.None)
            {
                pageFile.CheckIn("Checked by system.");
                pageFile.Publish("Published by system.");
            }

public static PublishingPage ProvisionPage(PublishingWeb publishingWeb, string pageLayoutName, string pageTitle, string pageDescription, string pageFileName)
        {
            PageLayout[] layouts = publishingWeb.GetAvailablePageLayouts();
            Dictionary<string, PageLayout> pageLayouts = new Dictionary<string, PageLayout>();
            foreach (PageLayout item in layouts)
            {
                string cID = item.Title.ToString();
                string name = item.Name;
                if (!pageLayouts.ContainsKey(cID.ToUpper()))
                    pageLayouts.Add(cID.ToUpper(), item);
            }

            PageLayout layout = pageLayouts[pageLayoutName.ToUpper()];
            PublishingPage newPage2 = null;
            SPListItem prevpage = PageExists(publishingWeb, pageFileName);
            if (prevpage!=null)
            {
                prevpage.Delete();
            }
            newPage2 = publishingWeb.GetPublishingPages().Add(pageFileName, layout);

            newPage2.Description = pageDescription;
            newPage2.Title = pageTitle;
            newPage2.Update();
            return newPage2;
        }

public static SPListItem PageExists(PublishingWeb publishingWeb, string pageFileName)
        {
            bool pageExists = false;
            SPList pageList = publishingWeb.PagesList;
            foreach (SPListItem li in pageList.Items)
            {
                if (li.Name.ToLower() == pageFileName.ToLower())
                {
                    pageExists = true;
    return li;
                }
            }
            return null;
        }

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yaşamak bir eylemdir