使用反射和Attribute动态显示代码中的注释内容
反射和Attribute是.NET的两种技术，可以应用在很多的地方。
反射可以反射类中的属性，方法，实现动态调用，也经常在三层工厂中使用，反射接口的实现。
Attribute，个人理解，就是一个特性，可以添加在任何自定义类型上面，然后添加一些注释，也是很有用的。
本篇就示例讲解一个他们的结合使用：使用反射和Attribute动态显示代码中的注释内容。其中也杂合它一些其他的内容，一个是前几天写的一个C#的加密解密算法，包括Silverlight的MD5算法。还有就是一个商品规格的计算方法，比如给出需要购买的总量，然后计算每种规格需要购买的数量，和总的花费。
结果如下图
代码如下
代码
<!--<br/ /><br/ />Code highlighting produced by Actipro CodeHighlighter (freeware)<br/ />http://www.CodeHighlighter.com/<br/ /><br/ />-->
using System;
using System.Collections.Generic;
using System.Linq;
using System. Text ;
using System.Web.Security;
using System.Reflection;
namespace ConsoleApplication1
{
[ AttributeUsage(AttributeTargets.Class) ]
class CodeReviewAttribute : System.Attribute
{
private string _reviewer;
public string Reviewer
{
get { return _reviewer; }
}
private string _date;
public string Date
{
get { return _date; }
}
private string _comment;
public string Comment
{
get { return _comment; }
set { _comment = value; }
}
public CodeReviewAttribute(string reviewer, string date)
{
this._reviewer = reviewer;
this._date = date;
}
}
[ CodeReview("swb", "2009-9-9", Comment = "代码不好") ]
class MyClass
{
}
[ AttributeUsage(AttributeTargets.Enum | AttributeTargets.Field) ]
class NoteAttribute : System.Attribute
{
private string _name;
public string Name
{
get { return _name; }
}
public NoteAttribute(string name)
{
this._name = name;
}
}
enum Log
{
[ Note("添加 用户") ]
AddUser,
[ Note("修改 用户") ]
ModifyUser
}
class EnumDescription
{
public static string Parse( Log type)
{
FieldInfo fields = type.GetType().GetField(type.ToString());
object [] objs = fields.GetCustomAttributes(true);
return ((NoteAttribute)objs [ 0 ] ).Name;
}
}
public interface IChinese
{
string Speak();
}
public class CNSpeaker : IChinese
{
#region Chinese Members
public string Speak()
{
return "Chinese";
}
#endregion
}
public interface IEnglish
{
string Speak();
}
public class ENSpeaker : IEnglish
{
#region English Members
string IEnglish.Speak()
{
return "English";
}
#endregion
}
class Program
{
static void Main(string [] args)
{
CNSpeaker cn = new CNSpeaker();
Console.WriteLine(cn.Speak());
IEnglish en = new ENSpeaker();
Console.WriteLine(en.Speak());
Console.WriteLine(" -- -------------------");
string str = " 123 ";
Console.WriteLine(string.Format(" 123 encrypt result: { 0 }", WebMD5Provider.WebFormMD5Encrypt( str )));
Console.WriteLine(" -- -------------------");
MD5CryptoServiceProvider md5Provider = new MD5CryptoServiceProvider();
byte [] encryptedBytes = md5Provider.ComputeHash(Encoding.UTF8.GetBytes( str ));
StringBuilder sb = new StringBuilder();
for ( int i = 0 ; i < encryptedBytes.Length; i ++ )
{
sb.AppendFormat("{ 0 :x2}", encryptedBytes [ i ] );
}
Console.WriteLine(string.Format(" 123 encrypt result: { 0 }", sb.ToString()));
Console.WriteLine(" -- -------------------");
System.Reflection.MemberInfo info = typeof(MyClass);
CodeReviewAttribute att = (CodeReviewAttribute)Attribute.GetCustomAttribute(info, typeof(CodeReviewAttribute));
if (att != null )
{
Console.WriteLine("MyClass 代码监察人：{ 0 }", att.Reviewer);
Console.WriteLine("MyClass 检查时间：{ 0 }", att.Date);
Console.WriteLine("MyClass 备注：{ 0 }", att.Comment);
}
Console.WriteLine(" -- -------------------");
Log log = Log .AddUser;
Console.WriteLine(string.Format ("Enum Log 的 AddUser 的注释是: { 0 }",EnumDescription.Parse( log )));
Console.WriteLine(" -- -------------------");
Int64? bbb = 0 ;
int ? aaa = 0 ;
Console.WriteLine(" -- -------------------");
decimal area = 110 ;
Console.WriteLine("你的土地面积是：{ 0 }", area);
decimal amount = 10m;
Console.WriteLine("你的每亩用量是是：{ 0 }", amount );
decimal budget = 0 ;
List < pkgspec > pkgs = new List < pkgspec > ();
pkgs. Add (new pkgspec() { amount = 200 , price = 180 , id = 2 });
pkgs. Add (new pkgspec() { amount = 100 , price = 100 , id = 1 });
pkgs. Add (new pkgspec() { amount = 250 , price = 250 , id = 3 });
pkgs.Sort(new Comparison < pkgspec > (compareDesc));
// pkgs.Sort(new Comparison < pkgspec > (compareAsc));
decimal totalAmount = area * amount;
Console.WriteLine("你的总共用量是：{ 0 }", totalAmount);
int num = 0 ;
List < pkgselect > select = new List < pkgselect > ();
foreach (pkgspec pkg in pkgs)
{
if (totalAmount % pkg.amount == totalAmount)
{
num = 1 ;
budget += num * pkg.price;
select . Add (new pkgselect() { id = pkg.id, num = num, price = pkg.price });
break ;
}
else if (totalAmount % pkg.amount == 0 )
{
num = ( int )(totalAmount / pkg.amount);
budget += num * pkg.price;
select . Add (new pkgselect() { id = pkg.id, num = ( int )(totalAmount / pkg.amount) , price = pkg.price });
break ;
}
else
{
num = ( int )(totalAmount / pkg.amount);
budget += num * pkg.price;
select . Add (new pkgselect() { id = pkg.id, num = num , price = pkg.price });
totalAmount = totalAmount - num * pkg.amount;
continue ;
}
}
foreach (pkgselect s in select )
{
Console.WriteLine("你需要购买的包装编号是：{ 0 }, 数量是 { 1 } 个 ， 单价是 { 2 }", s.id, s.num, s.price);
}
Console.WriteLine("你购买的总价是: { 0 }", budget);
Console.ReadLine();
}
private static int compareAsc(pkgspec pkg1, pkgspec pkg2)
{
if (pkg1.amount > pkg2.amount)
return 1 ;
if (pkg1.amount < pkg2.amount)
return - 1 ;
else
return 0 ;
}
private static int compareDesc(pkgspec pkg1, pkgspec pkg2)
{
if (pkg1.amount < pkg2.amount)
return 1 ;
if (pkg1.amount > pkg2.amount)
return - 1 ;
else
return 0 ;
}
}
/// < summary >
/// 选中的包装
/// </ summary >
class pkgselect
{
/// < summary >
/// 选中ID
/// </ summary >
public int id;
/// < summary >
/// 购买数量
/// </ summary >
public int num;
/// < summary >
/// 单价
/// </ summary >
public decimal price;
}
/// < summary >
/// 包装类型
/// </ summary >
class pkgspec : IComparable < pkgspec >
{
/// < summary >
/// 编号
/// </ summary >
public int id;
/// < summary >
/// 包装量
/// </ summary >
public decimal amount;
/// < summary >
/// 价格
/// </ summary >
public decimal price;
#region IComparable < pkgspec > Members
public int CompareTo(pkgspec other)
{
if (this.amount > other.amount)
return 1 ;
if (this.amount == other.amount)
return 0 ;
else
return - 1 ;
}
#endregion
}
}
using System.Collections.Generic;
using System.Linq;
using System. Text ;
using System.Web.Security;
using System.Reflection;
namespace ConsoleApplication1
{
[ AttributeUsage(AttributeTargets.Class) ]
class CodeReviewAttribute : System.Attribute
{
private string _reviewer;
public string Reviewer
{
get { return _reviewer; }
}
private string _date;
public string Date
{
get { return _date; }
}
private string _comment;
public string Comment
{
get { return _comment; }
set { _comment = value; }
}
public CodeReviewAttribute(string reviewer, string date)
{
this._reviewer = reviewer;
this._date = date;
}
}
[ CodeReview("swb", "2009-9-9", Comment = "代码不好") ]
class MyClass
{
}
[ AttributeUsage(AttributeTargets.Enum | AttributeTargets.Field) ]
class NoteAttribute : System.Attribute
{
private string _name;
public string Name
{
get { return _name; }
}
public NoteAttribute(string name)
{
this._name = name;
}
}
enum Log
{
[ Note("添加 用户") ]
AddUser,
[ Note("修改 用户") ]
ModifyUser
}
class EnumDescription
{
public static string Parse( Log type)
{
FieldInfo fields = type.GetType().GetField(type.ToString());
object [] objs = fields.GetCustomAttributes(true);
return ((NoteAttribute)objs [ 0 ] ).Name;
}
}
public interface IChinese
{
string Speak();
}
public class CNSpeaker : IChinese
{
#region Chinese Members
public string Speak()
{
return "Chinese";
}
#endregion
}
public interface IEnglish
{
string Speak();
}
public class ENSpeaker : IEnglish
{
#region English Members
string IEnglish.Speak()
{
return "English";
}
#endregion
}
class Program
{
static void Main(string [] args)
{
CNSpeaker cn = new CNSpeaker();
Console.WriteLine(cn.Speak());
IEnglish en = new ENSpeaker();
Console.WriteLine(en.Speak());
Console.WriteLine(" -- -------------------");
string str = " 123 ";
Console.WriteLine(string.Format(" 123 encrypt result: { 0 }", WebMD5Provider.WebFormMD5Encrypt( str )));
Console.WriteLine(" -- -------------------");
MD5CryptoServiceProvider md5Provider = new MD5CryptoServiceProvider();
byte [] encryptedBytes = md5Provider.ComputeHash(Encoding.UTF8.GetBytes( str ));
StringBuilder sb = new StringBuilder();
for ( int i = 0 ; i < encryptedBytes.Length; i ++ )
{
sb.AppendFormat("{ 0 :x2}", encryptedBytes [ i ] );
}
Console.WriteLine(string.Format(" 123 encrypt result: { 0 }", sb.ToString()));
Console.WriteLine(" -- -------------------");
System.Reflection.MemberInfo info = typeof(MyClass);
CodeReviewAttribute att = (CodeReviewAttribute)Attribute.GetCustomAttribute(info, typeof(CodeReviewAttribute));
if (att != null )
{
Console.WriteLine("MyClass 代码监察人：{ 0 }", att.Reviewer);
Console.WriteLine("MyClass 检查时间：{ 0 }", att.Date);
Console.WriteLine("MyClass 备注：{ 0 }", att.Comment);
}
Console.WriteLine(" -- -------------------");
Log log = Log .AddUser;
Console.WriteLine(string.Format ("Enum Log 的 AddUser 的注释是: { 0 }",EnumDescription.Parse( log )));
Console.WriteLine(" -- -------------------");
Int64? bbb = 0 ;
int ? aaa = 0 ;
Console.WriteLine(" -- -------------------");
decimal area = 110 ;
Console.WriteLine("你的土地面积是：{ 0 }", area);
decimal amount = 10m;
Console.WriteLine("你的每亩用量是是：{ 0 }", amount );
decimal budget = 0 ;
List < pkgspec > pkgs = new List < pkgspec > ();
pkgs. Add (new pkgspec() { amount = 200 , price = 180 , id = 2 });
pkgs. Add (new pkgspec() { amount = 100 , price = 100 , id = 1 });
pkgs. Add (new pkgspec() { amount = 250 , price = 250 , id = 3 });
pkgs.Sort(new Comparison < pkgspec > (compareDesc));
// pkgs.Sort(new Comparison < pkgspec > (compareAsc));
decimal totalAmount = area * amount;
Console.WriteLine("你的总共用量是：{ 0 }", totalAmount);
int num = 0 ;
List < pkgselect > select = new List < pkgselect > ();
foreach (pkgspec pkg in pkgs)
{
if (totalAmount % pkg.amount == totalAmount)
{
num = 1 ;
budget += num * pkg.price;
select . Add (new pkgselect() { id = pkg.id, num = num, price = pkg.price });
break ;
}
else if (totalAmount % pkg.amount == 0 )
{
num = ( int )(totalAmount / pkg.amount);
budget += num * pkg.price;
select . Add (new pkgselect() { id = pkg.id, num = ( int )(totalAmount / pkg.amount) , price = pkg.price });
break ;
}
else
{
num = ( int )(totalAmount / pkg.amount);
budget += num * pkg.price;
select . Add (new pkgselect() { id = pkg.id, num = num , price = pkg.price });
totalAmount = totalAmount - num * pkg.amount;
continue ;
}
}
foreach (pkgselect s in select )
{
Console.WriteLine("你需要购买的包装编号是：{ 0 }, 数量是 { 1 } 个 ， 单价是 { 2 }", s.id, s.num, s.price);
}
Console.WriteLine("你购买的总价是: { 0 }", budget);
Console.ReadLine();
}
private static int compareAsc(pkgspec pkg1, pkgspec pkg2)
{
if (pkg1.amount > pkg2.amount)
return 1 ;
if (pkg1.amount < pkg2.amount)
return - 1 ;
else
return 0 ;
}
private static int compareDesc(pkgspec pkg1, pkgspec pkg2)
{
if (pkg1.amount < pkg2.amount)
return 1 ;
if (pkg1.amount > pkg2.amount)
return - 1 ;
else
return 0 ;
}
}
/// < summary >
/// 选中的包装
/// </ summary >
class pkgselect
{
/// < summary >
/// 选中ID
/// </ summary >
public int id;
/// < summary >
/// 购买数量
/// </ summary >
public int num;
/// < summary >
/// 单价
/// </ summary >
public decimal price;
}
/// < summary >
/// 包装类型
/// </ summary >
class pkgspec : IComparable < pkgspec >
{
/// < summary >
/// 编号
/// </ summary >
public int id;
/// < summary >
/// 包装量
/// </ summary >
public decimal amount;
/// < summary >
/// 价格
/// </ summary >
public decimal price;
#region IComparable < pkgspec > Members
public int CompareTo(pkgspec other)
{
if (this.amount > other.amount)
return 1 ;
if (this.amount == other.amount)
return 0 ;
else
return - 1 ;
}
#endregion
}
}
代码
<!--<br/ /><br/ />Code highlighting produced by Actipro CodeHighlighter (freeware)<br/ />http://www.CodeHighlighter.com/<br/ /><br/ />-->
using System;
using System.Collections.Generic;
using System.Linq;
using System. Text ;
using System.Web.Security;
using System.Security.Cryptography;
using System.IO;
namespace ConsoleApplication1
{
/// < summary >
/// 字符串加解密工具类
/// </ summary >
public static class EncryptUtility
{
#region WinForm 的MD5和SHA1哈希，使得和System.Web.Security.FormsAuthentication的结果一致
public static string WinFormMD5Encrypt(string data)
{
MD5CryptoServiceProvider md5 = new MD5CryptoServiceProvider();
byte [] encryptedBytes = md5.ComputeHash(Encoding. ASCII .GetBytes(data));
StringBuilder sb = new StringBuilder();
for ( int i = 0 ; i < encryptedBytes.Length; i ++ )
{
sb.AppendFormat("{ 0 :x2}", encryptedBytes [ i ] );
}
return sb.ToString().ToUpper();
}
public static string WinFormSHA1Encrypt(string data)
{
SHA1CryptoServiceProvider md5 = new SHA1CryptoServiceProvider();
byte [] encryptedBytes = md5.ComputeHash(Encoding. ASCII .GetBytes(data));
StringBuilder sb = new StringBuilder();
for ( int i = 0 ; i < encryptedBytes.Length; i ++ )
{
sb.AppendFormat("{ 0 :x2}", encryptedBytes [ i ] );
}
return sb.ToString().ToUpper();
}
#endregion
#region WebForm中的 MD5 和 SHA1 哈希
/// < summary >
/// 返回MD5哈希结果
/// </ summary >
/// < param name = "password" ></ param >
/// < returns ></ returns >
public static string WebFormMD5Encrypt(string data)
{
if (string.IsNullOrEmpty(data))
throw new Exception("加密字符串不能为空");
return FormsAuthentication.HashPasswordForStoringInConfigFile(data, "md5");
}
/// < summary >
/// 返回SHA1哈希结果
/// </ summary >
/// < param name = "password" ></ param >
/// < returns ></ returns >
public static string WebFormSHA1Encrypt(string data)
{
if (string.IsNullOrEmpty(data))
throw new Exception("加密字符串不能为空");
return FormsAuthentication.HashPasswordForStoringInConfigFile(data, "sha1");
}
#endregion
#region 普通的字符变换加解密
/// < summary >
/// 普通字符还变
/// 加密
/// </ summary >
/// < param name = " str " ></ param >
/// < returns ></ returns >
public static string CommonEncrypt(string data)
{
if (string.IsNullOrEmpty(data))
throw new Exception("加密字符串不能为空");
string result = string.Empty;
int len = data.Length;
for ( int i = 0 ; i < len ; i ++ )
{
result += ( char )(data [ i ] + 10 - 1 * 2 );
}
return result;
}
/// < summary >
/// 普通的字符变换
/// 解密
/// </ summary >
/// < param name = " str " ></ param >
/// < returns ></ returns >
public static string CommonDecrypt(string data)
{
if (string.IsNullOrEmpty(data))
throw new Exception("加密字符串不能为空");
string result = string.Empty;
int len = data.Length;
for ( int i = 0 ; i < len ; i ++ )
{
result += ( char )(data [ i ] - 10 + 1 * 2 );
}
return result;
}
#endregion
#region 带有密钥的加解密
private static readonly string KEY_64 = System.Configuration.ConfigurationManager.AppSettings [ "key_64" ] ;
/// < summary >
/// 带有密钥的加解密
/// 加密
/// </ summary >
/// < param name = "data" ></ param >
/// < returns ></ returns >
public static string KeyEncrypt(string data)
{
using (DESCryptoServiceProvider provider = new DESCryptoServiceProvider())
{
byte [] inputByteArray = Encoding.UTF8.GetBytes(data);
provider. Key = ASCIIEncoding. ASCII .GetBytes(KEY_64. Substring ( 0 , 8 ));
provider.IV = ASCIIEncoding. ASCII .GetBytes(KEY_64);
MemoryStream ms = new MemoryStream();
using (CryptoStream cs = new CryptoStream(ms, provider.CreateEncryptor(), CryptoStreamMode.Write))
{
cs.Write(inputByteArray, 0 , inputByteArray.Length);
cs.FlushFinalBlock();
cs. Close ();
}
string str = Convert .ToBase64String(ms.ToArray());
ms. Close ();
return str ;
}
}
/// < summary >
/// 带有密钥的加解密
/// 解密
/// </ summary >
/// < param name = "data" ></ param >
/// < returns ></ returns >
public static string KeyDecrypt(string data)
{
byte [] inputByteArray = Convert .FromBase64String(data);
using (DESCryptoServiceProvider provider = new DESCryptoServiceProvider())
{
provider. Key = ASCIIEncoding. ASCII .GetBytes(KEY_64. Substring ( 0 , 8 ));
provider.IV = ASCIIEncoding. ASCII .GetBytes(KEY_64);
MemoryStream ms = new MemoryStream();
using (CryptoStream cs = new CryptoStream(ms, provider.CreateDecryptor(), CryptoStreamMode.Write))
{
cs.Write(inputByteArray, 0 , inputByteArray.Length);
cs.FlushFinalBlock();
cs. Close ();
}
string str = Encoding.UTF8.GetString(ms.ToArray());
ms. Close ();
return str ;
}
}
#endregion
}
public class
using System.Collections.Generic;
using System.Linq;
using System. Text ;
using System.Web.Security;
using System.Security.Cryptography;
using System.IO;
namespace ConsoleApplication1
{
/// < summary >
/// 字符串加解密工具类
/// </ summary >
public static class EncryptUtility
{
#region WinForm 的MD5和SHA1哈希，使得和System.Web.Security.FormsAuthentication的结果一致
public static string WinFormMD5Encrypt(string data)
{
MD5CryptoServiceProvider md5 = new MD5CryptoServiceProvider();
byte [] encryptedBytes = md5.ComputeHash(Encoding. ASCII .GetBytes(data));
StringBuilder sb = new StringBuilder();
for ( int i = 0 ; i < encryptedBytes.Length; i ++ )
{
sb.AppendFormat("{ 0 :x2}", encryptedBytes [ i ] );
}
return sb.ToString().ToUpper();
}
public static string WinFormSHA1Encrypt(string data)
{
SHA1CryptoServiceProvider md5 = new SHA1CryptoServiceProvider();
byte [] encryptedBytes = md5.ComputeHash(Encoding. ASCII .GetBytes(data));
StringBuilder sb = new StringBuilder();
for ( int i = 0 ; i < encryptedBytes.Length; i ++ )
{
sb.AppendFormat("{ 0 :x2}", encryptedBytes [ i ] );
}
return sb.ToString().ToUpper();
}
#endregion
#region WebForm中的 MD5 和 SHA1 哈希
/// < summary >
/// 返回MD5哈希结果
/// </ summary >
/// < param name = "password" ></ param >
/// < returns ></ returns >
public static string WebFormMD5Encrypt(string data)
{
if (string.IsNullOrEmpty(data))
throw new Exception("加密字符串不能为空");
return FormsAuthentication.HashPasswordForStoringInConfigFile(data, "md5");
}
/// < summary >
/// 返回SHA1哈希结果
/// </ summary >
/// < param name = "password" ></ param >
/// < returns ></ returns >
public static string WebFormSHA1Encrypt(string data)
{
if (string.IsNullOrEmpty(data))
throw new Exception("加密字符串不能为空");
return FormsAuthentication.HashPasswordForStoringInConfigFile(data, "sha1");
}
#endregion
#region 普通的字符变换加解密
/// < summary >
/// 普通字符还变
/// 加密
/// </ summary >
/// < param name = " str " ></ param >
/// < returns ></ returns >
public static string CommonEncrypt(string data)
{
if (string.IsNullOrEmpty(data))
throw new Exception("加密字符串不能为空");
string result = string.Empty;
int len = data.Length;
for ( int i = 0 ; i < len ; i ++ )
{
result += ( char )(data [ i ] + 10 - 1 * 2 );
}
return result;
}
/// < summary >
/// 普通的字符变换
/// 解密
/// </ summary >
/// < param name = " str " ></ param >
/// < returns ></ returns >
public static string CommonDecrypt(string data)
{
if (string.IsNullOrEmpty(data))
throw new Exception("加密字符串不能为空");
string result = string.Empty;
int len = data.Length;
for ( int i = 0 ; i < len ; i ++ )
{
result += ( char )(data [ i ] - 10 + 1 * 2 );
}
return result;
}
#endregion
#region 带有密钥的加解密
private static readonly string KEY_64 = System.Configuration.ConfigurationManager.AppSettings [ "key_64" ] ;
/// < summary >
/// 带有密钥的加解密
/// 加密
/// </ summary >
/// < param name = "data" ></ param >
/// < returns ></ returns >
public static string KeyEncrypt(string data)
{
using (DESCryptoServiceProvider provider = new DESCryptoServiceProvider())
{
byte [] inputByteArray = Encoding.UTF8.GetBytes(data);
provider. Key = ASCIIEncoding. ASCII .GetBytes(KEY_64. Substring ( 0 , 8 ));
provider.IV = ASCIIEncoding. ASCII .GetBytes(KEY_64);
MemoryStream ms = new MemoryStream();
using (CryptoStream cs = new CryptoStream(ms, provider.CreateEncryptor(), CryptoStreamMode.Write))
{
cs.Write(inputByteArray, 0 , inputByteArray.Length);
cs.FlushFinalBlock();
cs. Close ();
}
string str = Convert .ToBase64String(ms.ToArray());
ms. Close ();
return str ;
}
}
/// < summary >
/// 带有密钥的加解密
/// 解密
/// </ summary >
/// < param name = "data" ></ param >
/// < returns ></ returns >
public static string KeyDecrypt(string data)
{
byte [] inputByteArray = Convert .FromBase64String(data);
using (DESCryptoServiceProvider provider = new DESCryptoServiceProvider())
{
provider. Key = ASCIIEncoding. ASCII .GetBytes(KEY_64. Substring ( 0 , 8 ));
provider.IV = ASCIIEncoding. ASCII .GetBytes(KEY_64);
MemoryStream ms = new MemoryStream();
using (CryptoStream cs = new CryptoStream(ms, provider.CreateDecryptor(), CryptoStreamMode.Write))
{
cs.Write(inputByteArray, 0 , inputByteArray.Length);
cs.FlushFinalBlock();
cs. Close ();
}
string str = Encoding.UTF8.GetString(ms.ToArray());
ms. Close ();
return str ;
}
}
#endregion
}
public class
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