C# 操作 XML 源码

这段时间频繁的在Excel、XML、数据库之间倒腾数据，于是积累之下，写了不少的操作XML的方法。今天整理了一下，聚合成一个类，发上来给那些需要帮助的朋友吧。

大家可以先看看试试，有些地方可能写的不是很完善，如果你在使用中发现有什么问题或是有更好的建议，麻烦告诉一声，用我们共同的办量一起来完善吧。

using System;
using System.Collections;
using System.Xml;
using System.IO;
using System.Windows.Forms;

namespace Test
...{
    public class XmlParser
    ...{
        private XmlDocument doc = null;
        private XmlElement root = null;

        /**//// <summary>
        /// 读取 Xml 文件
        /// </summary>
        /// <param name="fName">文件名</param>
        /// <param name="isFile"></param>
        public XmlParser(string fName, bool isFile)
        ...{
            try
            ...{
                if (isFile)
                ...{
                    if (!File.Exists(fName))
                    ...{
                        throw new Exception("找不到xml文件，请与管理员联系！");
                    }
                    doc = new XmlDocument();
                    doc.Load(fName);
                    root = doc.DocumentElement;
                }
                else
                ...{
                    doc = new XmlDocument();
                    doc.LoadXml(fName);
                    root = doc.DocumentElement;
                }
            }
            catch (Exception e)
            ...{
                MessageBox.Show(e.Message);
            }
        }

        /**//// <summary>
        /// 返回根节点
        /// </summary>
        public XmlElement getRoot()
        ...{
            return this.root;
        }

        /**//// <summary>
        /// 返回当前节点的子节点
        /// </summary>
        /// <returns></returns>
        public string getXmlStr()
        ...{
            return doc.InnerXml;
        }

        /**//// <summary>
        /// 返回节点集合
        /// </summary>
        public ArrayList getAllCldNode(XmlElement e, string name)
        ...{
            ArrayList al = new ArrayList();
            if (e != null)
            ...{
                XmlNodeList nl = e.ChildNodes;
                for (int i = 0; i < nl.Count; i++)
                ...{
                    XmlElement tmp = (XmlElement)nl[i];
                    if (tmp != null)
                    ...{
                        if (tmp.Name.Equals(name))
                        ...{
                            al.Add(tmp);
                        }
                    }
                }
            }
            return al;
        }

        /**//// <summary>
        /// 返回指定的节点
        /// </summary>
        /// <param name="e">父节点</param>
        /// <param name="name">节点名称</param>
        /// <returns>节点名称</returns>
        public XmlElement getSingleCldNode(XmlElement e, string name)
        ...{
            XmlElement result = null;
            if (e != null)
            ...{
                XmlNodeList nl = e.ChildNodes;
                for (int i = 0; i < nl.Count; i++)
                ...{
                    XmlElement tmp = (XmlElement)nl[i];
                    if (tmp != null)
                    ...{
                        if (tmp.Name.Equals(name))
                        ...{
                            result = tmp;
                            break;
                        }
                    }
                }
            }
            return result;
        }

        /**//// <summary>
        /// 遍历节点树，查找指定的节点
        /// </summary>
        /// <param name="e"></param>
        /// <param name="nodeName"></param>
        /// <returns></returns>
        public XmlElement getSpecifyNode(XmlElement e, string nodeName)
        ...{
            XmlElement result = null;
            XmlNodeList nl = e.GetElementsByTagName(nodeName);
            for (int i = 0; i < nl.Count; i++)
            ...{
                result = (XmlElement)nl[i];
            }
            return result;
        }

        /**//// <summary>
        /// 更改节点文本值
        /// </summary>
        public void setElementText(XmlElement e, string text)
        ...{
            e.InnerText = text;
        }

        /**//// <summary>
        /// 添加新节点
        /// </summary>
        public XmlElement addElement(XmlElement e,string nodeName)
        ...{
            XmlElement xe = doc.CreateElement(nodeName);
            e.AppendChild(xe);
            return xe;
        }

        /**//// <summary>
        /// 删除当前节点下所有子节点
        /// </summary>
        /// <param name="e"></param>
        public void delElement(XmlElement e)
        ...{
            e.RemoveAll();
        }

        public DateTime getElementDateTime(XmlElement e, string name, DateTime DefValue)
        ...{
            DateTime result = DefValue;
            XmlElement tmp = getSingleCldNode(e, name);
            if (tmp != null)
            ...{
                string tmpstr = tmp.InnerText;
                if (tmpstr == null) result = DefValue;
                else
                ...{
                    try
                    ...{
                        result = Convert.ToDateTime(tmpstr);
                    }
                    catch (Exception ex)
                    ...{
                        MessageBox.Show(ex.Message);
                    }
                }
            }
            return result;
        }

        /**//// <summary>
        /// 获得指定节点的文本
        /// </summary>
        /// <param name="e">XmlElement</param>
        /// <param name="name">节点名称</param>
        /// <param name="DefValue"></param>
        /// <returns></returns>
        public string getElementTxt(XmlElement e, string name, string DefValue)
        ...{
            string result = DefValue;
            XmlElement tmp = getSingleCldNode(e, name);
            if (tmp != null)
            ...{
                string tmpstr = tmp.InnerText;
                if (tmpstr == null) result = DefValue; else result = tmpstr;
            }
            return result;
        }

        public Boolean getElementBool(XmlElement e, string name, Boolean DefValue)
        ...{
            Boolean result = DefValue;
            XmlElement tmp = getSingleCldNode(e, name);
            if (tmp != null)
            ...{
                string tmpstr = tmp.InnerText;
                if (tmpstr == null) result = DefValue;
                else
                ...{
                    if (tmpstr.Equals("true"))
                    ...{
                        result = true;
                    }
                    else
                    ...{
                        result = false;
                    }
                }
            }
            return result;
        }

        public DateTime getDateTime(XmlElement e, DateTime DefValue)
        ...{
            DateTime result = DefValue;

            if (e != null)
            ...{
                string tmpstr = e.InnerText;
                try
                ...{
                    result = Convert.ToDateTime(tmpstr);
                }
                catch (Exception ex)
                ...{
                    result = DefValue;
                }

            }
            return result;
        }

        public string getTxt(XmlElement e, string DefValue)
        ...{
            string result = DefValue;
            if (e != null)
            ...{
                string tmpstr = e.InnerText;
                if (tmpstr == null) result = DefValue; else result = tmpstr;
            }
            return result;
        }

        public int getElementInt(XmlElement e, string name, int DefValue)
        ...{
            int result = DefValue;
            XmlElement tmp = getSingleCldNode(e, name);
            if (tmp != null)
            ...{
                string tmpstr = tmp.InnerText;
                if ((tmpstr != null) && (!tmpstr.Equals("")))
                ...{
                    result = Convert.ToInt32(tmpstr);
                }
            }
            return result;
        }

        public long getElementlong(XmlElement e, string name, long DefValue)
        ...{
            long result = DefValue;
            XmlElement tmp = getSingleCldNode(e, name);
            if (tmp != null)
            ...{
                string tmpstr = tmp.InnerText;
                if ((tmpstr != null) && (!tmpstr.Equals("")))
                ...{
                    result = Convert.ToInt64(tmpstr);
                }
            }
            return result;
        }

        public int getAttributeInt(XmlElement e, string name, int DefValue)
        ...{
            int result = DefValue;
            if (e != null)
            ...{
                if (e.HasAttribute(name))
                ...{
                    string temp = e.GetAttribute(name);
                    if (temp == null) result = DefValue;
                    else
                        result = Convert.ToInt32(temp);
                }
            }
            return result;
        }

        public long getAttributeLong(XmlElement e, string name, long DefValue)
        ...{
            long result = DefValue;
            if (e != null)
            ...{
                if (e.HasAttribute(name))
                ...{
                    string temp = e.GetAttribute(name);
                    if (temp == null) result = DefValue;
                    else
                        result = Convert.ToInt64(temp);
                }
            }
            return result;
        }

        public int getInt(XmlElement e, int DefValue)
        ...{
            int result = DefValue;
            if (e != null)
            ...{
                string tmpstr = e.InnerText;
                if ((tmpstr != null) && (!tmpstr.Equals("")))
                ...{
                    result = Convert.ToInt32(tmpstr);
                }
            }
            return result;
        }

        public long getLong(XmlElement e, long DefValue)
        ...{
            long result = DefValue;
            if (e != null)
            ...{
                string tmpstr = e.InnerText;
                if ((tmpstr != null) && (!tmpstr.Equals("")))
                ...{
                    result = Convert.ToInt64(tmpstr);
                }
            }
            return result;
        }

        /**//// <summary>
        /// 取得节点属性值
        /// </summary>
        /// <param name="e"></param>
        /// <param name="name"></param>
        /// <param name="DefValue"></param>
        /// <returns></returns>
        public string getAttrTxt(XmlElement e, string name, string DefValue)
        ...{
            string result = DefValue;
            if (e != null)
            ...{
                if (e.HasAttributes)
                ...{
                    XmlAttribute xa = e.GetAttributeNode(name);
                    if (xa != null)
                    ...{
                        string tmp = xa.InnerText;
                        if (tmp != null) result = tmp;
                    }
                }
            }
            return result;
        }

        public void setAttrTxt(XmlElement e, string attName, string attValue)
        ...{
            e.SetAttribute(attName, attValue);
        }

        /**//// <summary>
        /// 保存 Xml 文件
        /// </summary>
        public void saveXml(string FName)
        ...{
            doc.Save(FName);
        }
    }
}