/// <summary>
/// 写入
/// </summary>
public void Write(IMemento memento, Stream stream)
{
//1. 写入根结点内容
XmlDocument xmlDocument = new XmlDocument();
XmlDeclaration xmlDeclaration = xmlDocument.CreateXmlDeclaration("1.0", "gb2312", "yes");
xmlDocument.PrependChild(xmlDeclaration);
XmlElement rootNode = xmlDocument.CreateElement(memento.Name);
xmlDocument.AppendChild(rootNode);
//2. 写入根结点属性信息
for (int index = 0; index <= memento.GetAttributeCount() - 1; index++)
{
XmlAttribute attributeNode = xmlDocument.CreateAttribute(memento.GetAttributeName(index));
attributeNode.Value = memento.GetAttributeValue(index);
rootNode.SetAttributeNode(attributeNode);
}
//3. 写入子结点内容
for (int index = 0; index <= memento.ChildCount - 1; index++)
{
IMemento childMemento = memento.GetChild(index);
ProcessMemento(childMemento, rootNode, xmlDocument);
}
xmlDocument.Save(stream);
}
private void ProcessMemento(IMemento memento, XmlNode parentNode, XmlDocument xmlDocument)
{
//1.增加结点
XmlElement newNode = xmlDocument.CreateElement(memento.Name);
parentNode.AppendChild(newNode);
//2.设置属性信息
for (int index = 0; index <= memento.GetAttributeCount() - 1; index++)
{
XmlAttribute attributeNode = xmlDocument.CreateAttribute(memento.GetAttributeName(index));
attributeNode.Value = memento.GetAttributeValue(index);
newNode.SetAttributeNode(attributeNode);
}
//3.递归进行ChildMemento处理
for (int index = 0; index <= memento.ChildCount - 1; index++)
{
IMemento childMemento = memento.GetChild(index);
ProcessMemento(childMemento, newNode, xmlDocument);
}
}