數據同步對比步驟:

1.將兩數據庫中對應的數據表分別生成XML文件

???????? /// <summary>
??????? /// 將一個DataTable以xml方式存入指定的文件中
??????? /// </summary>
??????? /// <param name="dt"></param>
??????? /// <param name="filePath"></param>
??????? public void SaveDataTableToXml(DataTable dt, string filePath)
??????? {
??????????? //創建文件夾
??????????? if (!Directory.Exists(Path.GetDirectoryName(filePath)))
??????????? {
??????????????? Directory.CreateDirectory(Path.GetDirectoryName(filePath));
??????????? }

??????????? DataSet ds = new DataSet();
??????????? ds.Tables.Add(dt.Copy());
??????????? ds.WriteXml(filePath);
??????? }

??????? /// <summary>
??????? /// 從一個指定的文件中讀取DataTable
??????? /// </summary>
??????? /// <param name="filePath"></param>
??????? public DataTable ReadDataTableFromXml(string filePath)
??????? {
??????????? DataSet ds = new DataSet();
??????????? ds.ReadXml(filePath);
??????????? if (ds.Tables.Count > 0)
??????????? {
??????????????? return ds.Tables[0];
??????????? }
??????????? else
??????????? {
??????????????? return null;
??????????? }
??????? }

2.上傳要對比的XML數據文件到服務器端或者是從服務器下載XML文件到本地

??????? C#Sockect異步傳送或者WebClient方式傳送

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3.對比要同步的數據資料

???????? /// <summary>
??????? /// 對比文件
??????? /// </summary>
??????? /// <param name="localFile">本地文件</param>
??????? /// <param name="remoteFile">遠程文件</param>
??????? /// <returns></returns>
??????? private bool FileCompare(string localFile, string remoteFile)
??????? {
??????????? int localFilebyte;
??????????? int remoteFilebyte;
??????????? FileStream localFileStream;
??????????? FileStream remoteFileStream;
??????????? if (localFile == remoteFile)
??????????? {
??????????????? return true;
??????????? }
??????????? localFileStream = new FileStream(localFile, FileMode.Open);
??????????? remoteFileStream = new FileStream(remoteFile, FileMode.Open);
??????????? if (localFileStream.Length != remoteFileStream.Length)
??????????? {
??????????????? localFileStream.Close();
??????????????? remoteFileStream.Close();
??????????????? return false;
??????????? }
??????????? do
??????????? {
??????????????? localFilebyte = localFileStream.ReadByte();
??????????????? remoteFilebyte = remoteFileStream.ReadByte();
??????????? }
??????????? while ((localFilebyte == remoteFilebyte) && (localFilebyte != -1));
??????????? localFileStream.Close();
??????????? remoteFileStream.Close();
??????????? return ((localFilebyte - remoteFilebyte) == 0);
??????? }
??????? /// <summary>
??????? /// 對比數據表
??????? /// </summary>
??????? /// <param name="localDataTable">本地數據表</param>
??????? /// <param name="remoteDataTable">遠程數據表</param>
??????? /// <returns></returns>
??????? public bool DataTableCompare(DataTable localDataTable, DataTable remoteDataTable)
??????? {
??????????? if (localDataTable == null || remoteDataTable == null)
??????????? {
??????????????? return false;
??????????? }
??????????? if (localDataTable.Rows.Count != remoteDataTable.Rows.Count)
??????????? {
??????????????? return false;
??????????? }
??????????? if (localDataTable.Columns.Count != remoteDataTable.Columns.Count)
??????????? {
??????????????? return false;
??????????? }
??????????? for (int i = 0; i < localDataTable.Rows.Count; i++)
??????????? {
??????????????? for (int j = 0; j < localDataTable.Columns.Count; j++)
??????????????? {
??????????????????? if (localDataTable.Rows[i][j].ToString() != remoteDataTable.Rows[i][j].ToString())
??????????????????? {
??????????????????????? return false;
??????????????????? }
??????????????? }
??????????? }
??????????? return true;
??????? }

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轉載于:https://www.cnblogs.com/splendidme/archive/2011/08/25/2153249.html

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