C#中读取pdm文件信息(PowerDesigner读取方法)(源码共享)。

其实PowerDesigner的pdm文件是一个xml文件来的，我们可以当作读取xml文件一样的方式来读pdm文件。

其中，我们需要注意的是：如果我们不使用命名空间管理器的话，系统会提示如下错误：

需要命名空间管理器或 XsltContext。此查询具有前缀、变量或用户定义的函数。 
说明: 执行当前 Web 请求期间，出现未处理的异常。请检查堆栈跟踪信息，以了解有关该错误以及代码中导致错误的出处的详细信息。 

异常详细信息: System.Xml.XPath.XPathException: 需要命名空间管理器或 XsltContext。此查询具有前缀、变量或用户定义的函数。
因此，我们读取pdm文件代码如下：

  

xmlDoc = new XmlDocument();
xmlDoc.Load(pdmFile);
xmlnsManager = new XmlNamespaceManager(xmlDoc.NameTable);
xmlnsManager.AddNamespace("a", "attribute");
xmlnsManager.AddNamespace("c", "collection");
xmlnsManager.AddNamespace("o", "object");
XmlNode xnTables = xmlDoc.SelectSingleNode("//" + cTables, xmlnsManager);

其实C#读取pdm文件难度并不大，只是一种体力活，为了后人少走点弯路，我下面公布一下代码：

ColumnInfo.cs（字段类）

namespace Piggy.Common.PDM
{
    //字段信息
    public class ColumnInfo
    {
        public ColumnInfo()
        { }

        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 { 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; }
        }
    }
}

PdmKey.cs（主键类）

using System.Collections.Generic;

namespace Piggy.Common.PDM
{
    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<ColumnInfo> columns;

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

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

TableInfo.cs（表信息类）

using System.Collections.Generic;

namespace Piggy.Common.PDM
{
    //表信息
    public class TableInfo
    {
        public TableInfo()
        {
        }
        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<ColumnInfo> columns;

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

        IList<PdmKey> keys;

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

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

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

PdmReader.cs（pdm文件读取器类）

using System.Xml;
using System.Collections.Generic;
using System.Collections;
using System;

namespace Piggy.Common.PDM
{
    public class PdmReader
    {
        public const string a = "attribute", c = "collection", o = "object";

        public const string cClasses = "c:Classes";
        public const string oClass = "o:Class";

        public const string cAttributes = "c:Attributes";
        public const string oAttribute = "o:Attribute";

        public const string cTables = "c:Tables";
        public const string oTable = "o:Table";

        public const string cColumns = "c:Columns";
        public const string oColumn = "o:Column";


        XmlDocument xmlDoc;
        XmlNamespaceManager xmlnsManager;
        /// <summary>构造函数 </summary>
        public PdmReader()
        {
            // TODO: 在此处添加构造函数逻辑
            xmlDoc = new XmlDocument();
        }
        /// <summary>构造函数 </summary>
        public PdmReader(string pdm_file)
        {
            PdmFile = pdm_file;
        }

        string pdmFile;

        public string PdmFile
        {
            get { return pdmFile; }
            set
            {
                pdmFile = value;
                if (xmlDoc == null)
                {
                    xmlDoc = new XmlDocument();
                    xmlDoc.Load(pdmFile);
                    xmlnsManager = new XmlNamespaceManager(xmlDoc.NameTable);
                    xmlnsManager.AddNamespace("a", "attribute");
                    xmlnsManager.AddNamespace("c", "collection");
                    xmlnsManager.AddNamespace("o", "object");
                }
            }
        }

        IList<TableInfo> tables;

        public IList<TableInfo> Tables
        {
            get { return tables; }
            set { tables = value; }
        }

        public void InitData()
        {
            if (Tables == null)
                Tables = new List<TableInfo>();
            XmlNode xnTables = xmlDoc.SelectSingleNode("//" + cTables, xmlnsManager);
            foreach (XmlNode xnTable in xnTables.ChildNodes)
            {
                Tables.Add(GetTable(xnTable));
            }
        }

        //初始化"o:Table"的节点
        private TableInfo GetTable(XmlNode xnTable)
        {
            TableInfo mTable = new TableInfo();
            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, TableInfo pTable)
        {
            foreach (XmlNode xnColumn in xnColumns)
            {
                pTable.AddColumn(GetColumn(xnColumn));
            }
        }

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

        private ColumnInfo GetColumn(XmlNode xnColumn)
        {
            ColumnInfo mColumn = new ColumnInfo();
            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 = pgConvert.ConvertStringToBoolean(xnP.InnerText);
                        break;
                    case "a:Mandatory": mColumn.Mandatory = pgConvert.ConvertStringToBoolean(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;
        }
    }
}

使用方法：

PdmReader mTest = new PdmReader("D:\\piggy\\CodeTest.pdm");
mTest.InitData();
this.Text=Convert.ToString(mTest.Tables.Count);

上面是使用这个pdm读取器的一个应用，把读取出来的表数量列出来。这个读取器可能还有某些地方没有调整好，读取出来的表数量好像比实际的要多，有可能是快捷方式引用出来的表也算进去了。有空必须要完善一下才行。 

 由于这个pdm读取器只是初步成型，能够完成基本的相关表、字段、主键等的读取功能，由于时间与工作关系，还有更多的信息没有读取处理，在这，我开放给大家，希望大家能够不断地完善，并且希望完善的人可以把源码发给我补充上来。我完善过的代码也会在这里不定时更新。日后并提供给大家下载。由于本文是原著，并非转载。转载的朋友请加原文的链接。标明文章出处。

原创作品出自努力偷懒，转载请说明文章出处：http://www.cnblogs.com/kfarvid/