/// <summary>
/// Получить ближайшего родительской части документа типа <typeparamref name="T"/>
/// </summary>
/// <typeparam name="T">Тип искомого родителя</typeparam>
/// <param name="part">Часть документа, предка котого требуется найти</param>
/// <returns>Ближайший предок типа <typeparamref name="T"/></returns>
public static T ParentPartOfType <T>(this OpenXmlPart part) where T : OpenXmlPart
{
var parentParts = part.GetParentParts();
if (parentParts == null || parentParts.Count() == 0)
{
return(null);
}
foreach (var p in parentParts)
{
if (p == null)
{
continue;
}
if (!(p is T))
{
var p2 = p.ParentPartOfType <T>();
if (p2 == null)
{
continue;
}
return(p2);
}
return(p as T);
}
return(null);
}
private static void CopyPartRecursive(OpenXmlPart destinationParent, OpenXmlPart part, string id, IDictionary <OpenXmlPart, OpenXmlPart> mapping)
{
if (part is IFixedContentTypePart)
{
OpenXmlPart parent = part.GetParentParts().Select(p => mapping.TryGetValue(p, out OpenXmlPart mappedParent) ? mappedParent : null).FirstOrDefault(p => p != null);
if (mapping.TryGetValue(part, out OpenXmlPart existingPart))
{
destinationParent.CreateRelationshipToPart(existingPart);
}
else
{
MethodInfo method = typeof(OpenXmlPart).GetTypeInfo().GetMethod(nameof(OpenXmlPart.AddNewPart), new Type[] { typeof(string) }).MakeGenericMethod(part.GetType());
OpenXmlPart newPart = method.Invoke(parent, new object[] { id }) as OpenXmlPart;
mapping.Add(part, newPart);
using (Stream data = part.GetStream())
{
newPart.FeedData(data);
}
foreach (IdPartPair relationship in part.Parts)
{
CopyPartRecursive(newPart, relationship.OpenXmlPart, relationship.RelationshipId, mapping);
}
}
}
}
public static void RemovePart(this OpenXmlPart part)
{
var parentParts = part.GetParentParts().ToList();
foreach (var parentPart in parentParts)
{
parentPart.DeletePart(part);
}
}