c#两种方式 dataset 与byte[] 字节的转换函数

sing System;

using System.Collections.Generic;

using System.Text;

using System.Security.Cryptography;

using System.Xml;

using System.IO;

using System.Text.RegularExpressions;

using System.Data;

using System.Runtime.Serialization;

using System.Runtime.Serialization.Formatters.Binary;

/// <summary>

/// dataset 转转换byte[] 字节

/// </summary>

/// <param name="str"></param>

public static byte[] DataToByte(DataSet ds)

{

byte[] bArrayResult = null;

ds.RemotingFormat = SerializationFormat.Binary;

MemoryStream ms = new MemoryStream();

IFormatter bf = new BinaryFormatter();

bf.Serialize(ms, ds);

bArrayResult = ms.ToArray();

ms.Close();

ms.Dispose();

return bArrayResult;

}

/// <summary>

/// byte[] 字节转datasheet

/// </summary>

/// <param name="bArrayResult"></param>

/// <returns></returns>

public static DataSet ByteToDataset(byte[] bArrayResult)

{

DataSet dsResult = new DataSet();

MemoryStream ms = new MemoryStream(bArrayResult);

IFormatter bf = new BinaryFormatter();

object obj = bf.Deserialize(ms);

dsResult = (DataSet)obj;

ms.Close();

ms.Dispose();

return dsResult;

}

/// <summary>

/// 第二种方法转换

/// </summary>

/// <param name="ds"></param>

/// <returns></returns>

public static byte[] GetBinaryFormatDataSet(DataSet ds)

{

//创建内存流

MemoryStream memStream = new MemoryStream();

//产生二进制序列化格式

IFormatter formatter = new BinaryFormatter();

//指定DataSet串行化格式是二进制

ds.RemotingFormat = SerializationFormat.Binary;

//串行化到内存中

formatter.Serialize(memStream, ds);

//将DataSet转化成byte[]

byte[] binaryResult = memStream.ToArray();

//清空和释放内存流

memStream.Close();

memStream.Dispose();

return binaryResult;

}

/// <summary>

/// 第二种方法转换

/// </summary>

/// <param name="binaryData"></param>

/// <returns></returns>

public static DataSet RetrieveDataSet(byte[] binaryData)

{

//创建内存流

MemoryStream memStream = new MemoryStream(binaryData);

memStream.Seek(0, SeekOrigin.Begin);

//产生二进制序列化格式

IFormatter formatter = new BinaryFormatter();

//反串行化到内存中

object obj = formatter.Deserialize(memStream);

//类型检验

if (obj is DataSet)

{

DataSet dataSetResult = (DataSet)obj;

return dataSetResult;

}

else

{

return null;

}

}