[命名空間]
using System.Data;
using System.IO;
using System.IO.Compression;
using System.Runtime.Serialization;
using System.Runtime.Serialization.Formatters.Binary;
C# DataSet對象序列化并壓縮
/// <summary>
/// 序列化DataSet對象并壓縮
/// </summary>
/// <param name="ds"></param>
static void DataSetSerializerCompression(DataSet ds, string savePath, string saveName)
{
IFormatter formatter = new BinaryFormatter();//定義BinaryFormatter以序列化DataSet對象
MemoryStream ms = new MemoryStream();//創(chuàng )建內存流對象
formatter.Serialize(ms, ds);//把DataSet對象序列化到內存流
byte[] buffer = ms.ToArray();//把內存流對象寫(xiě)入字節數組
ms.Close();//關(guān)閉內存流對象
ms.Dispose();//釋放資源
if (!Directory.Exists(savePath))//如果儲存文件夾不存在則創(chuàng )建文件夾
Directory.CreateDirectory(savePath);
FileStream fs = File.Create(savePath + saveName);//創(chuàng )建文件
GZipStream gzipStream = new GZipStream(fs, CompressionMode.Compress, true);//創(chuàng )建壓縮對象
gzipStream.Write(buffer, 0, buffer.Length);//把壓縮后的數據寫(xiě)入文件
gzipStream.Close();//關(guān)閉壓縮流
gzipStream.Dispose();//釋放對象
fs.Close();//關(guān)閉流
fs.Dispose();//釋放對象
}
/// <summary>
/// 不壓縮直接序列化DataSet
/// </summary>
/// <param name="ds"></param>
static void DataSetSerializer(DataSet ds, string savePath, string saveName)
{
IFormatter formatter = new BinaryFormatter();//定義BinaryFormatter以序列化DataSet對象
if (!Directory.Exists(savePath))//如果儲存文件夾不存在則創(chuàng )建文件夾
Directory.CreateDirectory(savePath);
FileStream fs = File.Create(savePath + saveName);//創(chuàng )建文件
formatter.Serialize(fs, ds);//把DataSet對象序列化到文件
fs.Close();//關(guān)閉流
fs.Dispose();//釋放對象
}
C# DataSet對象解壓縮及反序列化
/// <summary>
/// 反序列化壓縮的DataSet
/// </summary>
/// <param name="_filePath"></param>
/// <returns></returns>
static DataSet DataSetDeserializeDecompress(string _filePath)
{
FileStream fs = File.OpenRead(_filePath);//打開(kāi)文件
fs.Position = 0;//設置文件流的位置
GZipStream gzipStream = new GZipStream(fs, CompressionMode.Decompress);//創(chuàng )建解壓對象
byte[] buffer = new byte[4096];//定義數據緩沖
int offset = 0;//定義讀取位置
MemoryStream ms = new MemoryStream();//定義內存流
while ((offset = gzipStream.Read(buffer, 0, buffer.Length)) != 0)
{
ms.Write(buffer, 0, offset);//解壓后的數據寫(xiě)入內存流
}
BinaryFormatter sfFormatter = new BinaryFormatter();//定義BinaryFormatter以反序列化DataSet對象
ms.Position = 0;//設置內存流的位置
DataSet ds;
try
{
ds = (DataSet)sfFormatter.Deserialize(ms);//反序列化
}
catch
{
throw;
}
finally
{
ms.Close();//關(guān)閉內存流
ms.Dispose();//釋放資源
}
fs.Close();//關(guān)閉文件流
fs.Dispose();//釋放資源
gzipStream.Close();//關(guān)閉解壓縮流
gzipStream.Dispose();//釋放資源
return ds;
}
/// <summary>
/// 反序列化未壓縮的DataSet
/// </summary>
/// <param name="_filePath"></param>
/// <returns></returns>
static DataSet DataSetDeserialize(string _filePath)
{
FileStream fs = File.OpenRead(_filePath);//打開(kāi)文件
fs.Position = 0;//設置文件流的位置
BinaryFormatter sfFormatter = new BinaryFormatter();//定義BinaryFormatter以反序列化DataSet對象
DataSet ds;
try
{
ds = (DataSet)sfFormatter.Deserialize(fs);//反序列化
}
catch
{
throw;
}
finally
{
fs.Close();//關(guān)閉內存流
fs.Dispose();//釋放資源
}
fs.Close();//關(guān)閉文件流
fs.Dispose();//釋放資源
return ds;
}
