C# DataSet对象序列化并压缩及反序列化

今天做一个项目中用到把DataSet对象序列化成文件，并上传到服务器，不过生成的文件比较大，就想着压缩一下，找了一下资料，用GZipStream来压缩了一下，效果还是非常理想的。现在把这部分代码整理了一下：

 

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对象并压缩 /// </summary> /// <param name="ds"></param> static void DataSetSerializerCompression(DataSet ds) { IFormatter formatter = new BinaryFormatter();//定义BinaryFormatter以序列化DataSet对象 MemoryStream ms = new MemoryStream();//创建内存流对象 formatter.Serialize(ms, ds);//把DataSet对象序列化到内存流 byte[] buffer = ms.ToArray();//把内存流对象写入字节数组 ms.Close();//关闭内存流对象 ms.Dispose();//释放资源 FileStream fs = File.Create("datasetCompression.dat");//创建文件 GZipStream gzipStream = new GZipStream(fs, CompressionMode.Compress, true);//创建压缩对象 gzipStream.Write(buffer, 0, buffer.Length);//把压缩后的数据写入文件 fs.Close();//关闭流 fs.Dispose();//释放对象 } /// <summary> /// 不压缩直接序列化DataSet /// </summary> /// <param name="ds"></param> static void DataSetSerializer(DataSet ds) { IFormatter formatter = new BinaryFormatter();//定义BinaryFormatter以序列化DataSet对象 FileStream fs = File.Create("dataset.dat");//创建文件 formatter.Serialize(fs, ds);//把DataSet对象序列化到文件 fs.Close();//关闭流 fs.Dispose();//释放对象 } 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); } } } 本文来自优快云博客，转载请标明出处：file:///C:/Documents%20and%20Settings/wulingcheng/桌面/C%23%20DataSet对象序列化并压缩.mht

 

解压缩及反序列化的代码写一下：

/// <summary> /// 反序列化压缩的DataSet /// </summary> /// <param name="_filePath"></param> /// <returns></returns> static DataSet DataSetDeserializeDecompress(string _filePath) { FileStream fs = File.OpenRead(_filePath);//打开文件 fs.Position = 0;//设置文件流的位置 GZipStream gzipStream = new GZipStream(fs, CompressionMode.Decompress);//创建解压对象 byte[] buffer = new byte[4096];//定义数据缓冲 int offset = 0;//定义读取位置 MemoryStream ms = new MemoryStream();//定义内存流 while ((offset = gzipStream.Read(buffer, 0, buffer.Length)) != 0) { ms.Write(buffer, 0, offset);//解压后的数据写入内存流 } BinaryFormatter sfFormatter = new BinaryFormatter();//定义BinaryFormatter以反序列化DataSet对象 ms.Position = 0;//设置内存流的位置 DataSet ds; try { ds = (DataSet)sfFormatter.Deserialize(ms);//反序列化 } catch { throw; } finally { ms.Close();//关闭内存流 ms.Dispose();//释放资源 } fs.Close();//关闭文件流 fs.Dispose();//释放资源 gzipStream.Close();//关闭解压缩流 gzipStream.Dispose();//释放资源 return ds; } /// <summary> /// 反序列化未压缩的DataSet /// </summary> /// <param name="_filePath"></param> /// <returns></returns> static DataSet DataSetDeserialize(string _filePath) { FileStream fs = File.OpenRead(_filePath);//打开文件 fs.Position = 0;//设置文件流的位置 BinaryFormatter sfFormatter = new BinaryFormatter();//定义BinaryFormatter以反序列化DataSet对象 DataSet ds; try { ds = (DataSet)sfFormatter.Deserialize(fs);//反序列化 } catch { throw; } finally { fs.Close();//关闭内存流 fs.Dispose();//释放资源 } fs.Close();//关闭文件流 fs.Dispose();//释放资源 return ds; } 本文来自优快云博客，转载请标明出处：file:///C:/Documents%20and%20Settings/wulingcheng/桌面/C%23%20DataSet对象解压缩及反序列化.mht