代码生成器的关键代码（读取PDM文件）

/// <summary>
    /// 处理PDM文件
    /// </summary>
    public class DoPDMDal:IDoDataBaseDal
    {
        public List<DataBaseInfo> GetDataBaseTable()
        {
            XmlDocument xmlDoc = new XmlDocument();
            xmlDoc.Load(AppSettings.PdmFilePath);
            XmlNamespaceManager xmlnsManager = new XmlNamespaceManager(xmlDoc.NameTable);
            xmlnsManager.AddNamespace("a", "attribute");
            xmlnsManager.AddNamespace("c", "collection");
            xmlnsManager.AddNamespace("o", "object");
            XmlNode xnTables = xmlDoc.SelectSingleNode("//" + "c:Tables", xmlnsManager);

            List<PDMTableInfo> Tables = new List<PDMTableInfo>();
            foreach (XmlNode xnTable in xnTables.ChildNodes)
            {
                Tables.Add(GetTable(xnTable));
            }
            List<DataBaseInfo> list = new List<DataBaseInfo>();
            
            foreach (var m in Tables)
            {
                DataBaseInfo entity = new DataBaseInfo();
                entity.TableName=m.Code;
                list.Add(entity);
            }
            return list;
        }

        public List<TableInfo> GetTableColumnName(string tableName)
        {
            XmlDocument xmlDoc = new XmlDocument();
            xmlDoc.Load(AppSettings.PdmFilePath);
            XmlNamespaceManager xmlnsManager = new XmlNamespaceManager(xmlDoc.NameTable);
            xmlnsManager.AddNamespace("a", "attribute");
            xmlnsManager.AddNamespace("c", "collection");
            xmlnsManager.AddNamespace("o", "object");
            XmlNode xnTables = xmlDoc.SelectSingleNode("//" + "c:Tables", xmlnsManager);

            List<PDMColumnInfo> list = new List<PDMColumnInfo>();
            foreach (XmlNode xnTable in xnTables.ChildNodes)
            {

                PDMTableInfo entity = GetTable(xnTable);
                if(entity.Code==tableName)
                    list= GetTable(xnTable).Columns.ToList();                
            }

            List<TableInfo> tableInfoList = new List<TableInfo>();
            foreach (var m in list)
            {
                tableInfoList.Add(
                    new TableInfo()
                    {
                        ColumnName=m.Code,
                        ColumnType=m.DataType
                    }
                    );
            }
            return tableInfoList;
        }

        //初始化"o:Table"的节点
        private PDMTableInfo GetTable(XmlNode xnTable)
        {
            PDMTableInfo mTable = new PDMTableInfo();
            XmlElement xe = (XmlElement)xnTable;
            mTable.TableId = xe.GetAttribute("Id");
            XmlNodeList xnTProperty = xe.ChildNodes;
            foreach (XmlNode xnP in xnTProperty)
            {
                switch (xnP.Name)
                {
                    case "a:ObjectID": mTable.ObjectID = xnP.InnerText;
                        break;
                    case "a:Name": mTable.Name = xnP.InnerText;
                        break;
                    case "a:Code": mTable.Code = xnP.InnerText;
                        break;
                    case "a:CreationDate": mTable.CreationDate = Convert.ToInt32(xnP.InnerText);
                        break;
                    case "a:Creator": mTable.Creator = xnP.InnerText;
                        break;
                    case "a:ModificationDate": mTable.ModificationDate = Convert.ToInt32(xnP.InnerText);
                        break;
                    case "a:Modifier": mTable.Modifier = xnP.InnerText;
                        break;
                    case "a:Comment": mTable.Comment = xnP.InnerText;
                        break;
                    case "a:PhysicalOptions": mTable.PhysicalOptions = xnP.InnerText;
                        break;
                    case "c:Columns": InitColumns(xnP, mTable);
                        break;
                    case "c:Keys": InitKeys(xnP, mTable);
                        break;
                }
            }
            return mTable;
        }
        //初始化"c:Columns"的节点
        private void InitColumns(XmlNode xnColumns, PDMTableInfo pTable)
        {
            foreach (XmlNode xnColumn in xnColumns)
            {
                pTable.AddColumn(GetColumn(xnColumn));
            }
        }

        //初始化c:Keys"的节点
        private void InitKeys(XmlNode xnKeys, PDMTableInfo pTable)
        {
            foreach (XmlNode xnKey in xnKeys)
            {
                pTable.AddKey(GetKey(xnKey));
            }
        }

        private PDMColumnInfo GetColumn(XmlNode xnColumn)
        {
            PDMColumnInfo mColumn = new PDMColumnInfo();
            XmlElement xe = (XmlElement)xnColumn;
            mColumn.ColumnId = xe.GetAttribute("Id");
            XmlNodeList xnCProperty = xe.ChildNodes;
            foreach (XmlNode xnP in xnCProperty)
            {
                switch (xnP.Name)
                {
                    case "a:ObjectID": mColumn.ObjectID = xnP.InnerText;
                        break;
                    case "a:Name": mColumn.Name = xnP.InnerText;
                        break;
                    case "a:Code": mColumn.Code = xnP.InnerText;
                        break;
                    case "a:CreationDate": mColumn.CreationDate = Convert.ToInt32(xnP.InnerText);
                        break;
                    case "a:Creator": mColumn.Creator = xnP.InnerText;
                        break;
                    case "a:ModificationDate": mColumn.ModificationDate = Convert.ToInt32(xnP.InnerText);
                        break;
                    case "a:Modifier": mColumn.Modifier = xnP.InnerText;
                        break;
                    case "a:Comment": mColumn.Comment = xnP.InnerText;
                        break;
                    case "a:DataType": mColumn.DataType = xnP.InnerText;
                        break;
                    case "a:Length": mColumn.Length = xnP.InnerText;
                        break;
                    case "a:Identity": mColumn.Identity = ConvertToBooleanPG(xnP.InnerText);
                        break;
                    case "a:Mandatory": mColumn.Mandatory = ConvertToBooleanPG(xnP.InnerText);
                        break;
                    case "a:PhysicalOptions": mColumn.PhysicalOptions = xnP.InnerText;
                        break;
                    case "a:ExtendedAttributesText": mColumn.ExtendedAttributesText = xnP.InnerText;
                        break;
                }
            }
            return mColumn;
        }

        private PDMKey GetKey(XmlNode xnKey)
        {
            PDMKey mKey = new PDMKey();
            XmlElement xe = (XmlElement)xnKey;
            mKey.KeyId = xe.GetAttribute("Id");
            XmlNodeList xnKProperty = xe.ChildNodes;
            foreach (XmlNode xnP in xnKProperty)
            {
                switch (xnP.Name)
                {
                    case "a:ObjectID": mKey.ObjectID = xnP.InnerText;
                        break;
                    case "a:Name": mKey.Name = xnP.InnerText;
                        break;
                    case "a:Code": mKey.Code = xnP.InnerText;
                        break;
                    case "a:CreationDate": mKey.CreationDate = Convert.ToInt32(xnP.InnerText);
                        break;
                    case "a:Creator": mKey.Creator = xnP.InnerText;
                        break;
                    case "a:ModificationDate": mKey.ModificationDate = Convert.ToInt32(xnP.InnerText);
                        break;
                    case "a:Modifier": mKey.Modifier = xnP.InnerText;
                        break;
                    //还差 <c:Key.Columns>
                }
            }
            return mKey;
        }

        private static Boolean ConvertToBooleanPG(Object obj)
        {
            if (obj != null)
            {
                string mStr = obj.ToString();
                mStr = mStr.ToLower();
                if ((mStr.Equals("y") || mStr.Equals("1")) || mStr.Equals("true"))
                {
                    return true;
                }
            }
            return false;
        }
    }

种个实体：

public class PDMColumnInfo
    {
        public PDMColumnInfo()
        { }

        string columnId;

        public string ColumnId
        {
            get { return columnId; }
            set { columnId = value; }
        }
        string objectID;

        public string ObjectID
        {
            get { return objectID; }
            set { objectID = value; }
        }
        string name;

        public string Name
        {
            get { return name; }
            set { name = value; }
        }
        string code;

        public string Code
        {
            get { return code; }
            set { code = value; }
        }
        int creationDate;

        public int CreationDate
        {
            get { return creationDate; }
            set { creationDate = value; }
        }
        string creator;

        public string Creator
        {
            get { return creator; }
            set { creator = value; }
        }
        int modificationDate;

        public int ModificationDate
        {
            get { return modificationDate; }
            set { modificationDate = value; }
        }
        string modifier;

        public string Modifier
        {
            get { return modifier; }
            set { modifier = value; }
        }
        string comment;

        public string Comment
        {
            get { return comment; }
            set { comment = value; }
        }
        string dataType;

        public string DataType
        {
            get { return dataType; }
            set 
            {
                if (value.Contains("nvarchar") || value.Contains("varchar"))
                {
                    value = "string";
                }
                if (value.Contains("money"))
                {
                    value = "decimal";
                }
                dataType = value; 
            }
        }
        string length;

        public string Length
        {
            get { return length; }
            set { length = value; }
        }
        //是否自增量
        bool identity;

        public bool Identity
        {
            get { return identity; }
            set { identity = value; }
        }
        bool mandatory;
        //禁止为空
        public bool Mandatory
        {
            get { return mandatory; }
            set { mandatory = value; }
        }
        string extendedAttributesText;
        //扩展属性
        public string ExtendedAttributesText
        {
            get { return extendedAttributesText; }
            set { extendedAttributesText = value; }
        }
        string physicalOptions;

        public string PhysicalOptions
        {
            get { return physicalOptions; }
            set { physicalOptions = value; }
        }
    }

　　

public class PDMKey
    {
        public PDMKey()
        {
        }

        string keyId;

        public string KeyId
        {
            get { return keyId; }
            set { keyId = value; }
        }
        string objectID;

        public string ObjectID
        {
            get { return objectID; }
            set { objectID = value; }
        }
        string name;

        public string Name
        {
            get { return name; }
            set { name = value; }
        }
        string code;

        public string Code
        {
            get { return code; }
            set { code = value; }
        }
        int creationDate;

        public int CreationDate
        {
            get { return creationDate; }
            set { creationDate = value; }
        }
        string creator;

        public string Creator
        {
            get { return creator; }
            set { creator = value; }
        }
        int modificationDate;

        public int ModificationDate
        {
            get { return modificationDate; }
            set { modificationDate = value; }
        }
        string modifier;

        public string Modifier
        {
            get { return modifier; }
            set { modifier = value; }
        }

        IList<PDMColumnInfo> columns;

        public IList<PDMColumnInfo> Columns
        {
            get { return columns; }
        }

        public void AddColumn(PDMColumnInfo mColumn)
        {
            if (columns == null)
                columns = new List<PDMColumnInfo>();
            columns.Add(mColumn);
        }
    }

　　

public class PDMTableInfo
    {
        public PDMTableInfo()
        {
        }
        string tableId;

        public string TableId
        {
            get { return tableId; }
            set { tableId = value; }
        }
        string objectID;

        public string ObjectID
        {
            get { return objectID; }
            set { objectID = value; }
        }
        string name;

        public string Name
        {
            get { return name; }
            set { name = value; }
        }
        string code;

        public string Code
        {
            get { return code; }
            set { code = value; }
        }
        int creationDate;

        public int CreationDate
        {
            get { return creationDate; }
            set { creationDate = value; }
        }
        string creator;

        public string Creator
        {
            get { return creator; }
            set { creator = value; }
        }
        int modificationDate;

        public int ModificationDate
        {
            get { return modificationDate; }
            set { modificationDate = value; }
        }
        string modifier;

        public string Modifier
        {
            get { return modifier; }
            set { modifier = value; }
        }
        string comment;

        public string Comment
        {
            get { return comment; }
            set { comment = value; }
        }

        string physicalOptions;

        public string PhysicalOptions
        {
            get { return physicalOptions; }
            set { physicalOptions = value; }
        }


        IList<PDMColumnInfo> columns;

        public IList<PDMColumnInfo> Columns
        {
            get { return columns; }
        }

        IList<PDMKey> keys;

        public IList<PDMKey> Keys
        {
            get { return keys; }
        }

        public void AddColumn(PDMColumnInfo mColumn)
        {
            if (columns == null)
                columns = new List<PDMColumnInfo>();
            columns.Add(mColumn);
        }

        public void AddKey(PDMKey mKey)
        {
            if (keys == null)
                keys = new List<PDMKey>();
            keys.Add(mKey);
        }
    }