修改文档库中文件名称

/// <summary>

/// An item was added.

/// </summary>

public override void ItemAdded(SPItemEventProperties properties)

{

　　base.ItemAdded(properties);

SPListItem item = properties.ListItem;

　　string fileName = "人员测评" + "-" + properties.UserDisplayName +  "-" + DateTime.Now.ToString("yyyyMM") + item.File.Name.Substring(item.File.Name.LastIndexOf(‘.‘));

item.File.MoveTo(item.Url.Substring(0, item.Url.IndexOf(‘/‘) + 1) + fileName, true);

}