Page layouts

// Gets the page template
PageTemplateInfo pageTemplate = PageTemplateInfoProvider.GetPageTemplateInfo("NewTemplate");
if (pageTemplate != null)
{
    // Sets the template's layout type to ASCX
    pageTemplate.PageTemplateLayoutType = LayoutTypeEnum.Ascx;

    // Sets the custom layout code of the template
    pageTemplate.PageTemplateLayout = "<cms:CMSWebPartZone ZoneID=\"zoneExample\" runat=\"server\" />";

    // Saves the template changes to the database
    PageTemplateInfoProvider.SetPageTemplateInfo(pageTemplate);
}

// Creates a new layout object
LayoutInfo newLayout = new LayoutInfo();

// Sets the layout properties
newLayout.LayoutDisplayName = "New layout";
newLayout.LayoutCodeName = "NewLayout";
newLayout.LayoutDescription = "This is a layout created by an API example";
newLayout.LayoutType = LayoutTypeEnum.Ascx;
newLayout.LayoutCode = "<cms:CMSWebPartZone ZoneID=\"zoneA\" runat=\"server\" />";

// Saves the layout to the database
LayoutInfoProvider.SetLayoutInfo(newLayout);

// Gets the layout
LayoutInfo updateLayout = LayoutInfoProvider.GetLayoutInfo("NewLayout");
if (updateLayout != null)
{
    // Adds another web part zone into the layout code
    updateLayout.LayoutCode += "<cms:CMSWebPartZone ZoneID=\"zoneB\" runat=\"server\" />";

    // Saves the changes to the database
    LayoutInfoProvider.SetLayoutInfo(updateLayout);
}

// Gets all shared page layouts whose code name starts with 'NewLayout'
var layouts = LayoutInfoProvider.GetLayouts().WhereStartsWith("LayoutCodeName", "NewLayout");

// Loops through individual layouts
foreach (LayoutInfo layout in layouts)
{               
    // Updates the layout properties
    layout.LayoutDisplayName = layout.LayoutDisplayName.ToUpper();

    // Saves the changes to the database
    LayoutInfoProvider.SetLayoutInfo(layout);
}

// Gets the page template
PageTemplateInfo pageTemplate = PageTemplateInfoProvider.GetPageTemplateInfo("NewTemplate");

// Gets the layout
LayoutInfo sharedLayout = LayoutInfoProvider.GetLayoutInfo("NewLayout");

if ((pageTemplate != null) && (sharedLayout != null))
{
    // Assigns the page layout to the template
    pageTemplate.LayoutID = sharedLayout.LayoutId;              

    // Saves the template changes to the database
    PageTemplateInfoProvider.SetPageTemplateInfo(pageTemplate);
}

// Gets the layout
LayoutInfo deleteLayout = LayoutInfoProvider.GetLayoutInfo("NewLayout");

if (deleteLayout != null)
{
    // Deletes the layout
    LayoutInfoProvider.DeleteLayoutInfo(deleteLayout);
}