C# DataSet對象序列化並壓縮及反序列化

今天做一個項目中用到把DataSet對象序列化成文件，並上傳到服務器，不過生成的文件比較大，就想着壓縮一下，找了一下資料，用GZipStream來壓縮了一下，效果還是非常理想的。現在把這部分代碼整理了一下：

 

using System.Data; using System.IO; using System.IO.Compression; using System.Runtime.Serialization; using System.Runtime.Serialization.Formatters.Binary; namespace DataSetSerializerDeserialize { class Program { /// <summary> /// 序列化DataSet對象並壓縮 /// </summary> /// <param name="ds"></param> static void DataSetSerializerCompression(DataSet ds) { IFormatter formatter = new BinaryFormatter();//定義BinaryFormatter以序列化DataSet對象 MemoryStream ms = new MemoryStream();//創建內存流對象 formatter.Serialize(ms, ds);//把DataSet對象序列化到內存流 byte[] buffer = ms.ToArray();//把內存流對象寫入字節數組 ms.Close();//關閉內存流對象 ms.Dispose();//釋放資源 FileStream fs = File.Create("datasetCompression.dat");//創建文件 GZipStream gzipStream = new GZipStream(fs, CompressionMode.Compress, true);//創建壓縮對象 gzipStream.Write(buffer, 0, buffer.Length);//把壓縮後的數據寫入文件 fs.Close();//關閉流 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) { IFormatter formatter = new BinaryFormatter();//定義BinaryFormatter以序列化DataSet對象 FileStream fs = File.Create("dataset.dat");//創建文件 formatter.Serialize(fs, ds);//把DataSet對象序列化到文件 fs.Close();//關閉流 fs.Dispose();//釋放對象 } static void Main(string[] args) { DataTable table = new DataTable("ParentTable"); DataColumn column; DataRow row; column = new DataColumn(); column.DataType = System.Type.GetType("System.Int32"); column.ColumnName = "id"; column.ReadOnly = true; column.Unique = true; table.Columns.Add(column); column = new DataColumn(); column.DataType = System.Type.GetType("System.String"); column.ColumnName = "ParentItem"; column.AutoIncrement = false; column.Caption = "ParentItem"; column.ReadOnly = false; column.Unique = false; table.Columns.Add(column); DataColumn[] PrimaryKeyColumns = new DataColumn[1]; PrimaryKeyColumns[0] = table.Columns["id"]; table.PrimaryKey = PrimaryKeyColumns; DataSet dataSet = new DataSet(); dataSet.Tables.Add(table); for (int i = 0; i <= 100; i++) { row = table.NewRow(); row["id"] = i; row["ParentItem"] = "ParentItem " + i; table.Rows.Add(row); } DataSetSerializer(dataSet); DataSetSerializerCompression(dataSet); } } } 本文來自CSDN博客，轉載請標明出處：file:///C:/Documents%20and%20Settings/wulingcheng/桌面/C%23%20DataSet對象序列化並壓縮.mht

 

解壓縮及反序列化的代碼寫一下：

/// <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);//打開文件 fs.Position = 0;//設置文件流的位置 GZipStream gzipStream = new GZipStream(fs, CompressionMode.Decompress);//創建解壓對象 byte[] buffer = new byte[4096];//定義數據緩衝 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);//解壓後的數據寫入內存流 } 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();//關閉內存流 ms.Dispose();//釋放資源 } fs.Close();//關閉文件流 fs.Dispose();//釋放資源 gzipStream.Close();//關閉解壓縮流 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();//關閉內存流 fs.Dispose();//釋放資源 } fs.Close();//關閉文件流 fs.Dispose();//釋放資源 return ds; } 本文來自CSDN博客，轉載請標明出處：file:///C:/Documents%20and%20Settings/wulingcheng/桌面/C%23%20DataSet對象解壓縮及反序列化.mht