关于Entity Framework 5 从数据库生成模型时没有字段注释的解决方法！

目前用到了EF5进行模型创建，发现从数据库生成过来的实体中并没有包含字段的说明信息（鄙视下微软，这么简单的问题都不给解决下，太粗枝大叶了），网上找到了EFTSQLDocumentation.Generator.exe的相关方法，但按照操作后，死活没有字段说明信息，只好看其源码，最终发现是xmlns的命名空间不对导致的，程序中给写死了，没法用。自己就哪来修改下，变成可视化直接操作的windows应用程序，分享与大家！

 public partial class Form1 : Form
     {
         public Form1()
         {
             InitializeComponent();
         }

         private void button1_Click(object sender, EventArgs e)
         {
             var connectionString = this.txtConnectionString.Text;
             var fromEdmx = this.txtFrom.Text;
             var toEdmx = this.txtTo.Text;
             var nameSpace = this.txtNamespace.Text;
             if (connectionString == "")
             {
                 MessageBox.Show("请填写数据库链接字符串！");
                 return;
             }
             if (fromEdmx == "")
             {
                 MessageBox.Show("请填写源Edmx文件的物理路径！");
                 return;
             }
             if (toEdmx == "")
             {
                 MessageBox.Show("请填写新生成Edmx文件的物理路径！");
                 return;
             }
             if (nameSpace == "")
             {
                 MessageBox.Show("请填写Edmx中的xmlns命名空间（每个版本可能不一样）！");
                 return;
             }
             try
             {
                 var creater = new Creater(connectionString, fromEdmx, toEdmx, nameSpace);
                 creater.CreateDocumentation();
                 creater.Dispose();
                 MessageBox.Show("操作成功了，哥们！如何谢我？");
             }
             catch (Exception ex)
             {
                 MessageBox.Show("对不住，兄弟，可能是你的错，也可能是我的错！参考下具体信息：" + ex.Message);
                 //throw;
             }

         }
     }

     public class Creater
     {
         public String ConnectionString { get; set; }
         public String InputFileName { get; set; }
         public String OutputFileName { get; set; }
         public SqlConnection Connection { get; set; }
         public String XmlnsNameSpace { get; set; }

         public Creater(String connectionString, String inputFileName, String outputFileName, string nameSpace)
         {
             this.ConnectionString = connectionString;
             this.InputFileName = inputFileName;
             this.OutputFileName = outputFileName;
             this.XmlnsNameSpace = nameSpace;
             this.Connection = new SqlConnection(connectionString);
             this.Connection.Open();
         }
         public void Dispose()
         {
             this.Connection.Dispose();
         }
         public void CreateDocumentation()
         {

             var doc = XDocument.Load(this.InputFileName);
             var entityTypeElements = doc.Descendants("{" + XmlnsNameSpace + "}EntityType");

             var i = ;
             foreach (var entityTypeElement in entityTypeElements)
             {
                 var tableName = entityTypeElement.Attribute("Name").Value;
                 var propertyElements = entityTypeElement.Descendants("{" + XmlnsNameSpace + "}Property");

                 this.AddNodeDocumentation(entityTypeElement, GetTableDocumentation(tableName));

                 foreach (var propertyElement in propertyElements)
                 {
                     var columnName = propertyElement.Attribute("Name").Value;
                     this.AddNodeDocumentation(propertyElement, GetColumnDocumentation(tableName, columnName));
                 }
             }

             if (File.Exists(this.OutputFileName))
                 File.Delete(this.OutputFileName);
             doc.Save(this.OutputFileName);
         }
         private void AddNodeDocumentation(XElement element, String documentation)
         {
             if (String.IsNullOrEmpty(documentation))
                 return;
             element.Descendants("{" + XmlnsNameSpace + "}Documentation").Remove();

             element.AddFirst(new XElement("{" + XmlnsNameSpace + "}Documentation", new XElement("{" + XmlnsNameSpace + "}Summary", documentation)));
         }
         private String GetTableDocumentation(String tableName)
         {
             using (var command = new SqlCommand(@" SELECT [value]
                                                           FROM fn_listextendedproperty (
                                                                 'MS_Description',
                                                                 'schema', 'dbo',
                                                                 'table',  @TableName,
                                                                 null, null)", this.Connection))
             {

                 command.Parameters.AddWithValue("TableName", tableName);

                 return command.ExecuteScalar() as String;
             }
         }
         private String GetColumnDocumentation(String tableName, String columnName)
         {
             using (var command = new SqlCommand(@"SELECT [value]
                                                          FROM fn_listextendedproperty (
                                                                 'MS_Description',
                                                                 'schema', 'dbo',
                                                                 'table', @TableName,
                                                                 'column', @columnName)", this.Connection))
             {

                 command.Parameters.AddWithValue("TableName", tableName);
                 command.Parameters.AddWithValue("ColumnName", columnName);

                 return command.ExecuteScalar() as String;
             }
         }
     }