关于返回数组问题
做一个读取XML配置的方法，在取用户名（mUser = xObj.mValue）和密码（mPassWord = xObj.mValue）时，为什么返回的数组是最后一次调用的值，既mUser随着mPassWord的改变而改变，不知道这是为什么，有什么方法可以实现，请高手指教，万分感谢！

XML格式
<root>
<IdNum>2</IdNum>
<Account>
<user>
<id>sunzhenggo</id>
<password>123456</password>
</user>
<user>
<id>mengmeng</id>
<password>654321</password>
</user>
</Account>
</root>

Form类代码

private const string ACC_PATH = "day\\AccName.xml";
        private const string USER_NODE = "root/Account/user";  
 private void InitData()
        {
            int Respond = 0; 
            xObj = new XmlFile();
            if ((Respond = xObj.ReadXML(ACC_PATH, USER_NODE, "id")) == 0)
            {
                mUser = xObj.mValue;
            }
            if ((Respond = xObj.ReadXML(ACC_PATH, USER_NODE, "password")) == 0)
            {
                mPassWord = xObj.mValue;
            }
        }

XmlFile类代码

public class XmlFile : XmlDocument
    {
        int integer;
        string[] mStr1 = new string[5];
        public string[] mValue = new string[5];

        public int ReadXML(string mPath,string mName,string mChild) 
        {
            string mStr="";
            int i = 0;
            try
            {
                this.Load(mPath);
                XmlNode node = this.SelectSingleNode(mName);
                XmlNodeList list = this.SelectNodes(mName);
                if (node != null)
                {
                   foreach (XmlNode item in list)
                    {
                       XmlNode xNode1 = item.SelectSingleNode(mChild);
                       mStr1[i] = xNode1.InnerText;
                       mValue[i] = mStr1[i];
                       i++;
                     }
                 }
                node = null;
                list = null;
                return 0;
            }
            catch (Exception e)
            {
                MessageBox.Show(e.Message);
                return -1; 
 
            }
        }

[解决办法]
普通的xml读取方法

XmlDocument xmlDoc = new XmlDocument();
xmlDoc.Load("XMLFile.xml");
XmlNode root = xmlDoc.SelectSingleNode("root");
int numberOfAccount = int.Parse(root.SelectSingleNode("IdNum").InnerText);
XmlNodeList nodes = root.SelectSingleNode("Account").ChildNodes;

UserInfo[] users = new UserInfo[numberOfAccount];
for (int i = 0; i < numberOfAccount; i++)
{
    XmlNode elm = nodes[i];
    UserInfo user = new UserInfo(){ id = elm["id"].InnerText,password = elm["password"].InnerText };
    users[i] = user;
}

class UserInfo
{
    public string id { get; set; }
    public string password { get; set; }
}

[解决办法]

           string xml = @"<root>
                          <IdNum>2</IdNum>
                          <Account>
                            <user>
                        <id>sunzhenggo</id>
                        <password>123456</password>
                            </user>
                            <user>
                        <id>mengmeng</id>
                        <password>654321</password>
                            </user>
                          </Account>
                        </root>";
            
            XmlDocument xdoc1 = new XmlDocument();
            xdoc1.LoadXml(xml);
            XmlNodeList lists= xdoc1.SelectNodes("root/Account/user");

            Dictionary<string, string> dictUsers = new Dictionary<string, string>();

            foreach (XmlNode x in lists)
            {
                if (x!=null)
                {
                    string key = x.SelectSingleNode("id").InnerText;
                    string value = x.SelectSingleNode("password").InnerText;
                    dictUsers.Add(key, value); 
 
                }
            }