C# Add Content Editor Web Part

using (SPLimitedWebPartManager webPartManager = web.GetLimitedWebPartManager(file.Url, PersonalizationScope.Shared))
{
ContentEditorWebPart wp = new ContentEditorWebPart();
XmlDocument xmlDoc = new XmlDocument();
XmlElement xmlElement = xmlDoc.CreateElement("Root");
xmlElement.InnerText = "Test CEWP Contents";
wp.Content = xmlElement;
wp.Content.InnerText = xmlElement.InnerText;
wp.Title = "Test";
webPartManager.AddWebPart(wp, "Zone 1", 10);
}

Programmatically create Sharepoint Pages

Props to Laura: http://www.sharepoint911.com/blogs/laura/Lists/Posts/Post.aspx?List=daba3a3b%2Dc338%2D41d8%2Dbf52%2Dcd897d000cf3&ID=67&Web=dbb90e85%2Db54c%2D49f4%2D8e97%2D6d8258116ca0

Open your site in SharePoint Designer, and click File –> New
–> ASPX
Click the Format menu, choose Master Page,
and click Attach Master Page
Click OK for the Default Master Page.
Click the PlaceHolderMain section in the middle of the page, click the
little chevron (the little gray button with an arrow on it), and click
Create Custom Content.
Put your cursor inside of the PlaceHolderMain section. On the
Insert Menu, choose SharePoint Controls, and
click Web Part Zone

View Source, copy/paste into the Resource.


string siteUrl = "http://localhost";
using (SPSite site = new SPSite(siteUrl))
{
using (SPWeb web = site.OpenWeb("/"))
{
SPDocumentLibrary lib = (SPDocumentLibrary)web.Lists.TryGetList("Site Pages");
string filename = string.Format("test{0}.aspx", DateTime.Now.ToString("yyyymmddhhmmss"));
System.Text.UTF8Encoding encoding = new System.Text.UTF8Encoding();
byte[] page = encoding.GetBytes(Resource1.ASPXTemplate);
SPFile file = lib.RootFolder.Files.Add(filename, page, true);
}
}

CreateField with Default Value

public static void CreateFieldWithDefault(SPList list, string fieldName, string defaultValue, SPFieldType spFieldType)
{
try
{
string fieldNameNoSpaces = TrimSpaces(fieldName);
string displayName = list.Fields.Add(fieldNameNoSpaces, spFieldType, false);
SPField field = list.Fields[fieldNameNoSpaces];
field.Title = fieldName;
if (spFieldType != SPFieldType.Boolean)
{
field.DefaultValue = defaultValue;
}
field.Update();
if (spFieldType == SPFieldType.DateTime)
{
SPFieldDateTime dt = (SPFieldDateTime)field;
dt.DisplayFormat = SPDateTimeFieldFormatType.DateOnly;
dt.Update();
}
SPView view = list.DefaultView;
view.ViewFields.Add(fieldName);
view.Update();
}
catch (Exception ex)
{
Logging.LogException("CreateFieldWithDefault", ex);
}
}

private static string TrimSpaces(string fieldName)
{
string[] names = fieldName.Split(' ');
string fieldNameNoSpaces = string.Empty;
foreach (string name in names)
{
fieldNameNoSpaces += name;
}
return fieldNameNoSpaces;
}

SPItemEventReceiver - SPItem SPField updated

public override void ItemAdded(SPItemEventProperties properties)
{
// Check that ths is the list we care about
if (false == string.Equals(properties.ListTitle, "ListName", StringComparison.InvariantCultureIgnoreCase))
{
return;
}
// Check if this is the Field name that we care about
if (null == properties.AfterProperties["FieldName"])
{
return;
}

// If you get here, field was added/updated.

}

private static void SnapshotToXLS(SPList list, SPList docLib)
{
try
{
SPListItemCollection listItems = list.GetItems(list.Views["View"]);
DataTable items = listItems.GetDataTable();
string filename = string.Format("{0}.xml", DateTime.Now.ToString("yyyymmddhhmmss"));
MemoryStream contents = new MemoryStream();
items.WriteXml(contents);
SPFile file = docLib.RootFolder.Files.Add(filename, contents);
}

Sharepoint Menu Manipulation Headers versus Links

Everything gets created as a link, if you want just a header, use the following code:

SPNavigationNode header = new SPNavigationNode("Header", "");
header = nodes.AddAsLast(header);
header.Properties["NodeType"] = "Heading";
header.Properties["BlankUrl"] = "true";
header.Update();

Delete all items from a Sharepoint list

private static void EmptyList(SPSite site, SPList list)
{
StringBuilder sbDelete = new StringBuilder();
sbDelete.Append("");
string command = "" + list.ID + "{0}Delete";
foreach (SPListItem item in list.Items)
{
sbDelete.Append(string.Format(command, item.ID.ToString()));
}
sbDelete.Append("");
site.RootWeb.ProcessBatchData(sbDelete.ToString());
}