重构insert update 比较两个datatbale
#region 下载时重构insert（数据带null处理）
public void DownDataInsert(DataTable _dt, string TableName,DBHelper dbhelper)
{
List<string> _List = new List<string>();
try
{
if (_dt == null)
{
throw new Exception("datatable不可为空！");
}
if (string.IsNullOrEmpty(TableName))
{
throw new Exception("表名不可为空！");
} for (int i = ; i < _dt.Rows.Count; i++)
{
string sqlstring = string.Empty;
string sqlString = "insert into " + TableName + " ({0}) VALUES ({1})";
string Names = string.Empty;
string values = string.Empty;
foreach (DataColumn c in _dt.Columns)
{
if (_dt.Rows[i][c.ColumnName] != null && !string.IsNullOrEmpty(_dt.Rows[i][c.ColumnName].ToString()))
{
Names += (string.IsNullOrEmpty(Names) ? "" : ",") + c.ColumnName;
if (IsType(c.DataType, "System.Nullable`1[System.Int16]") ||
IsType(c.DataType, "System.Nullable`1[System.Int32]") ||
IsType(c.DataType, "System.Nullable`1[System.Int64]") ||
IsType(c.DataType, "System.Nullable`1[System.Double]") ||
IsType(c.DataType, "System.Nullable`1[System.Decimal]") ||
c.DataType == typeof(System.Int16) ||
c.DataType == typeof(System.Int32) ||
c.DataType == typeof(System.Int64) ||
c.DataType == typeof(System.Double) ||
c.DataType == typeof(System.Decimal))
{
values += (string.IsNullOrEmpty(values) ? "" : ",") + _dt.Rows[i][c.ColumnName].ToString();
} if (IsType(c.DataType, "System.Nullable`1[System.DateTime]") ||
c.DataType == typeof(System.DateTime))
{
values += (string.IsNullOrEmpty(values) ? "" : ",") + "DateTime('" + _dt.Rows[i][c.ColumnName].ToString() + "')";
}
if (IsType(c.DataType, "System.String") || c.DataType == typeof(System.String))
{
values += (string.IsNullOrEmpty(values) ? "" : ",") + "'" + _dt.Rows[i][c.ColumnName].ToString() + "'";
}
}
}
if (!string.IsNullOrEmpty(Names) && !string.IsNullOrEmpty(values))
{
sqlstring = string.Format(sqlString, Names, values);
_List.Add(sqlstring);
}
}
dbhelper.ExecuteSqlTran(_List);
}
catch (Exception ex)
{
throw ex;
}
finally
{
_List = null;
}
}
#endregion #region 比较两个datatable,值不一样的相应的修改下载处理
public void CompareToDataTable(DataTable SourTable, DataTable TargetTable, string TableName)
{
string SelectString = string.Empty;
List<string> _list = new List<string>();
DataTable dtInsert = null;
DataTable drUpdate = null;
try
{
dtInsert = SourTable.Clone();
drUpdate = SourTable.Clone();
foreach (DataRow dr in SourTable.Rows)
{
if (TableName == "t_sellworker")
{
SelectString = "serverpartcode='" + dr["serverpartcode"].ToString() + "' and sellworkercode='" + dr["sellworkercode"].ToString() + "'";
}
else if (TableName == "t_salespromote")
{
SelectString = "salespromote_id=" + dr["salespromote_id"].ToString() + "";
// SelectString = "salespromote_startdate='" + dr["salespromote_startdate"].ToString() + "' and salespromote_enddate='" + dr["salespromote_enddate"].ToString() + "' " +
// " and salespromote_type='" + dr["salespromote_type"].ToString() + "' and salespromote_name='" + dr["salespromote_name"].ToString() + "' and commodity_code='" + dr["commodity_code"].ToString() + "'";
}
else if (TableName == "t_commodityex")
{
SelectString = "commodity_code='" + dr["commodity_code"].ToString() + "' and commodity_barcode='" + dr["commodity_barcode"].ToString() + "' "; // and serverpartshop_id=" + dr["serverpartshop_id"].ToString() + "
}
DataRow[] dr2 = TargetTable.Select(SelectString);
if (dr2 != null && dr2.Length > )
{
bool flag = false;
foreach (DataRow dr3 in dr2)
{
foreach (DataColumn c in SourTable.Columns)
{
if (dr3[c.ColumnName] != null && dr[c.ColumnName] != null && dr3[c.ColumnName].ToString() != dr[c.ColumnName].ToString())
{
flag = true;
break;
}
}
}
if (flag)
{
drUpdate.Rows.Add(dr.ItemArray);
}
}
else
{
dtInsert.Rows.Add(dr.ItemArray); //添加数据行
}
} if (drUpdate != null && drUpdate.Rows.Count > )
{
if(TableName=="t_sellworker")
{
UpdateData(drUpdate, "t_sellworker", new string[] { "serverpartcode", "sellworkercode" }, TargetDb);
}
else if (TableName == "t_salespromote")
{
UpdateData(drUpdate, "t_salespromote", new string[] { "salespromote_startdate", "salespromote_enddate", "salespromote_type", "salespromote_name", "commodity_code"}, TargetDb);
}
else if (TableName == "t_commodityex")
{
UpdateData(drUpdate, "t_commodityex", new string[] { "serverpartcode", "commodity_barcode", "serverpartshop_id" }, TargetDb);
}
MessageBox.Show("更新成功！");
}
if (dtInsert != null && dtInsert.Rows.Count > )
{
DownDataInsert(dtInsert, TableName, TargetDb);//插入
MessageBox.Show("下载成功！");
} }
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
finally
{
dtInsert = null;
drUpdate = null;
}
}
#endregion #region 下载时重构update语句(处理数据空的情况)
public void UpdateData(DataTable table, string TableName, string[] keys,DBHelper dbhelper)
{
List<string> _List = null;
Dictionary<string, string> keyList = null;
try
{
if (_List == null)
{
_List = new List<string>();
}
else
{
_List.Clear();
} if (table == null)
{
throw new Exception("行不可为空！");
}
if (string.IsNullOrEmpty(TableName))
{
throw new Exception("表名不可为空！");
}
for (int i = ; i < table.Rows.Count; i++)
{
if (keyList == null)
{
keyList = new Dictionary<string, string>();
}
else
{
keyList.Clear();
}
string sqlstring = string.Empty;
string sqlString = "Update " + TableName + " set {0} where {1}";
string values = string.Empty;
foreach (DataColumn c in table.Columns)
{
if (table.Rows[i][c.ColumnName] != null && !string.IsNullOrEmpty(table.Rows[i][c.ColumnName].ToString()))
{
if (IsType(c.DataType, "System.Nullable`1[System.Int16]") ||
IsType(c.DataType, "System.Nullable`1[System.Int32]") ||
IsType(c.DataType, "System.Nullable`1[System.Int64]") ||
IsType(c.DataType, "System.Nullable`1[System.Double]") ||
IsType(c.DataType, "System.Nullable`1[System.Decimal]") ||
c.DataType == typeof(System.Int16) ||
c.DataType == typeof(System.Int32) ||
c.DataType == typeof(System.Int64) ||
c.DataType == typeof(System.Double) ||
c.DataType == typeof(System.Decimal))
{
values += ((string.IsNullOrEmpty(values) ? "" : ",") + c.ColumnName + "=" + table.Rows[i][c.ColumnName].ToString());
if (keys.Contains(c.ColumnName.ToUpper()) || keys.Contains(c.ColumnName.ToLower()))
{
keyList.Add(c.ColumnName, table.Rows[i][c.ColumnName].ToString());
}
} if (IsType(c.DataType, "System.Nullable`1[System.DateTime]") ||
c.DataType == typeof(System.DateTime))
{
values += ((string.IsNullOrEmpty(values) ? "" : ",") + c.ColumnName + "=" + "DateTime('" + table.Rows[i][c.ColumnName].ToString() + "')");
if (keys.Contains(c.ColumnName.ToUpper()) || keys.Contains(c.ColumnName.ToLower()))
{
keyList.Add(c.ColumnName, "DateTime('" + table.Rows[i][c.ColumnName].ToString() + "')");
}
}
if (IsType(c.DataType, "System.String") || c.DataType == typeof(System.String))
{
values += (string.IsNullOrEmpty(values) ? "" : ",") + c.ColumnName + "=" + "'" + table.Rows[i][c.ColumnName].ToString() + "'";
if (keys.Contains(c.ColumnName.ToUpper()) || keys.Contains(c.ColumnName.ToLower()))
{
keyList.Add(c.ColumnName, "'" + table.Rows[i][c.ColumnName].ToString() + "'");
}
}
}
}
if (!string.IsNullOrEmpty(values) && keyList != null && keyList.Count == keys.Length)
{
string strKeys = string.Empty;
foreach (KeyValuePair<string, string> kvp in keyList)
{
strKeys += ((string.IsNullOrEmpty(strKeys) ? "" : " AND ") + kvp.Key + " = " + kvp.Value);
} if (!string.IsNullOrEmpty(strKeys))
{
sqlstring = string.Format(sqlString, values, strKeys);
_List.Add(sqlstring);
} }
}
dbhelper.ExecuteSqlTran(_List);
}
catch (Exception ex)
{
throw ex;
}
finally
{
_List = null;
keyList = null;
}
}
#endregion
#region 上传时重构目标数据表insert（数据中带null的处理）
public void InsertTableData(DataTable dt, string TableName, DBHelper dbhelper)
{
try
{
List<string> _List = new List<string>();
if (dt == null)
{
throw new Exception("datatable不可为空！");
}
if (string.IsNullOrEmpty(TableName))
{
throw new Exception("表名不可为空！");
} for (int i = ; i < dt.Rows.Count; i++)
{
string sqlstring = string.Empty;
string sqlString = "insert into " + TableName + " ({0}) VALUES ({1})";
string Names = string.Empty;
string values = string.Empty;
foreach (DataColumn c in dt.Columns)
{
if (dt.Rows[i][c.ColumnName] != null && !string.IsNullOrEmpty(dt.Rows[i][c.ColumnName].ToString()))
{
Names += (string.IsNullOrEmpty(Names) ? "" : ",") + c.ColumnName;
if (IsType(c.DataType, "System.Nullable`1[System.Int16]") ||
IsType(c.DataType, "System.Nullable`1[System.Int32]") ||
IsType(c.DataType, "System.Nullable`1[System.Int64]") ||
IsType(c.DataType, "System.Nullable`1[System.Double]") ||
IsType(c.DataType, "System.Nullable`1[System.Decimal]") ||
c.DataType == typeof(System.Int16) ||
c.DataType == typeof(System.Int32) ||
c.DataType == typeof(System.Int64) ||
c.DataType == typeof(System.Double) ||
c.DataType == typeof(System.Decimal))
{
values += (string.IsNullOrEmpty(values) ? "" : ",") + dt.Rows[i][c.ColumnName].ToString();
} if (IsType(c.DataType, "System.Nullable`1[System.DateTime]") ||
c.DataType == typeof(System.DateTime))
{
values += (string.IsNullOrEmpty(values) ? "" : ",") + "DateTime('" + dt.Rows[i][c.ColumnName].ToString() + "')";
}
if (IsType(c.DataType, "System.String") || c.DataType == typeof(System.String))
{
values += (string.IsNullOrEmpty(values) ? "" : ",") + "'" + dt.Rows[i][c.ColumnName].ToString() + "'";
}
}
}
if (!string.IsNullOrEmpty(Names) && !string.IsNullOrEmpty(values))
{
sqlstring = string.Format(sqlString, Names, values);
_List.Add(sqlstring);
}
}
dbhelper.ExecuteSqlTran(_List);
}
catch (Exception ex)
{
throw ex;
}
}
#endregion
DBHelper SourceDb = new DBHelper("192.168.11.197", "pos1101", "dba", "sql");//源数据库
DBHelper TargetDb = new DBHelper("127.0.0.1", "pos012", "dba", "sql"); //目标
public class DBHelper
{
#region 构造函数
public DBHelper(string ConnStr)
{
connstring = ConnStr;
} public DBHelper(string Host, string Server, string UserId, string Password)
{
connstring = "host=" + Host + ";server=" + Server + ";userid=" + UserId + ";password=" + Password + ";";
} public DBHelper()
{ }
#endregion #region 属性信息
private string connstring = null;
public string ConnStr
{
set
{
connstring = value;
}
get
{
return connstring;
}
}
#endregion public DataSet QueryOdbc(string SqlString)
{
using (SAConnection conn = new SAConnection(connstring))
{
SACommand cmd = new SACommand(SqlString, conn);
try
{
conn.Open();
SADataAdapter adp = new SADataAdapter(cmd);
DataSet ds = new DataSet();
adp.Fill(ds);
conn.Close();
return ds;
}
catch (Exception ex)
{
throw new Exception(ex.Message);
}
}
} /// <summary>
/// 保存数据
/// </summary>
/// <param name="SQLStringList"></param>
public void ExecuteSqlTran(List<string> SQLStringList)
{
using (SAConnection conn = new SAConnection(connstring))
{
conn.Open();
SACommand cmd = new SACommand
{
Connection = conn
};
SATransaction tx = conn.BeginTransaction();
cmd.Transaction = tx;
try
{
for (int i = ; i < SQLStringList.Count; i++)
{
string strsql = SQLStringList[i].ToString();
if (strsql.Trim().Length > )
{
cmd.CommandText = strsql;
cmd.ExecuteNonQuery();
}
}
tx.Commit();
}
catch (Exception ex)
{
tx.Rollback();
throw new Exception(ex.Message);
}
finally
{
conn.Close();
}
}
} /// <summary>
/// 保存数据
/// </summary>
/// <param name="SQLStringList"></param>
public void ExecuteSqlTran(string SQLString)
{
using (SAConnection conn = new SAConnection(connstring))
{
conn.Open();
SACommand cmd = new SACommand
{
Connection = conn
};
SATransaction tx = conn.BeginTransaction();
cmd.Transaction = tx;
try
{
if (SQLString.Trim().Length > )
{
cmd.CommandText = SQLString;
cmd.ExecuteNonQuery();
}
tx.Commit();
}
catch (Exception E)
{
tx.Rollback();
throw new Exception(E.Message);
}
finally
{
conn.Close();
}
}
} /// <summary>
/// 获取最大主键ID
/// </summary>
/// <param name="SqlString"></param>
/// <returns></returns>
public int OdbcGetMaxPKID(string SqlString)
{
using (SAConnection conn = new SAConnection(connstring))
{
SACommand cmd = new SACommand(SqlString, conn);
try
{
conn.Open();
int max_id = cmd.ExecuteScalar().ToString().Equals("") ? : int.Parse(cmd.ExecuteScalar().ToString());
conn.Close();
return max_id;
}
catch (Exception ex)
{
throw new Exception(ex.Message);
}
}
} ///// <summary>
///// 测试连接
///// </summary>
//public static void TestConn()
//{
// using (SAConnection Conn = new SAConnection(connstring))
// {
// Conn.Open();
// SACommand cmd = new SACommand();
// cmd.Connection = Conn;
// Conn.Close();
// }
//}
}
dbhelper类
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