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网上的一个xml操作类

在此基础上我加的一个 “插入一个节点和多个子节点”的方法
public void InsertNodes(string boot, string ChildNode, string [] Elements, string [] Contents)
{
    XmlNode objRootNode = objXmlDoc.SelectSingleNode(boot);
    XmlElement objChildNode = objXmlDoc.CreateElement(ChildNode);
    objRootNode.AppendChild(objChildNode);
    for(int i=0;i<Elements.Length;i++)
    {
        XmlElement objElement = objXmlDoc.CreateElement(Elements[i]);
        objElement.InnerText = Contents[i];
        objChildNode.AppendChild(objElement);
    }
}
/// <summary>
/// 写两级XML文件的通用方法
/// </summary>
/// <param name="filename">文件全路径</param>
/// <param name="comment">注释</param>
/// <param name="root">根元素 </param>
/// <param name="child1">一级子元素</param>
/// <param name="child2">二级子元素</param>
/// <param name="element">二级子元素值</param>
private void XmlWriteCommon(string filename, string comment, string root,string child1,string [] child2, string[,] element)
{
    XmlTextWriter xmlWrite = new XmlTextWriter(filename, Encoding.UTF8);
    xmlWrite.Formatting = Formatting.Indented;
    xmlWrite.WriteStartDocument(true);
    xmlWrite.WriteComment(comment);
    xmlWrite.WriteStartElement(root);
    for (int i = 0; i < element.GetLength(1); i++)
    {
        xmlWrite.WriteStartElement(child1);
        for(int j=0;j<child2.Length;j++)
        {
            xmlWrite.WriteElementString(child2[j], element[j, i]);
        }
        xmlWrite.WriteEndElement();
    }
    xmlWrite.WriteEndElement();
    xmlWrite.Flush();
    xmlWrite.Close();
}