我正在使用SqlBulkCopy将数据从excel和另一个数据库导入到2个不同的SQL表中。
在我每次在目标表中缺少一行时，无论是来自excel的源还是来自其他数据库的行，都一切顺利。
以下是从excel导入数据的代码段：
public void ImportDataFromExcel(string excelFilePath)
{
string ssqltable = "szip_IncomingAssetData";
string myexceldataquery = "SELECT * FROM ["+ GetExcelSheetNames(excelFilePath)+"]";
try
{
string sexcelconnectionstring = GetExcelConnectionString(excelFilePath);
Logger.Log("Excel Connection String: " + sexcelconnectionstring, false);
OpenDatabaseConnection(1, "ImportDataFromExcel");
OleDbConnection oledbconn = new OleDbConnection(sexcelconnectionstring);
OleDbCommand oledbcmd = new OleDbCommand(myexceldataquery, oledbconn);
oledbconn.Open();
OleDbDataReader dr = oledbcmd.ExecuteReader();
SqlBulkCopy bulkcopy = new SqlBulkCopy(hpamConnection)
{
DestinationTableName = ssqltable
};
SqlBulkCopyColumnMapping mapID = new SqlBulkCopyColumnMapping(System.Configuration.ConfigurationManager.AppSettings["szip_AssetID"], "szip_IncomingAssetID");
SqlBulkCopyColumnMapping mapName = new SqlBulkCopyColumnMapping( System.Configuration.ConfigurationManager.AppSettings["szip_IncomingAssetName"], "szip_IncomingAssetName");
SqlBulkCopyColumnMapping mapSerial = new SqlBulkCopyColumnMapping( System.Configuration.ConfigurationManager.AppSettings["szip_IncomingAssetSerial"], "szip_IncomingAssetSerial");
SqlBulkCopyColumnMapping mapRI = new SqlBulkCopyColumnMapping( System.Configuration.ConfigurationManager.AppSettings["szip_IncomingAssetRI"], "szip_IncomingAssetRI");
SqlBulkCopyColumnMapping mapModel = new SqlBulkCopyColumnMapping( System.Configuration.ConfigurationManager.AppSettings["szip_IncomingAssetModel"],"szip_IncomingAssetModel");
SqlBulkCopyColumnMapping mapVendor = new SqlBulkCopyColumnMapping(System.Configuration.ConfigurationManager.AppSettings["szip_IncomingAssetVendor"],"szip_IncomingAssetVendor");
SqlBulkCopyColumnMapping mapFRU = new SqlBulkCopyColumnMapping( System.Configuration.ConfigurationManager.AppSettings["szip_IncomingAssetFirstRU"], "szip_IncomingAssetFirstRU");
SqlBulkCopyColumnMapping mapLRU = new SqlBulkCopyColumnMapping( System.Configuration.ConfigurationManager.AppSettings["szip_IncomingAssetLastRU"], "szip_IncomingAssetLastRU");
SqlBulkCopyColumnMapping mapLocation = new SqlBulkCopyColumnMapping( System.Configuration.ConfigurationManager.AppSettings["szip_IncomingAssetLocation"], "szip_IncomingAssetLocation");
SqlBulkCopyColumnMapping mapRack = new SqlBulkCopyColumnMapping( System.Configuration.ConfigurationManager.AppSettings["szip_IncomingAssetRack"], "szip_IncomingAssetRack");
SqlBulkCopyColumnMapping mapStatus = new SqlBulkCopyColumnMapping( System.Configuration.ConfigurationManager.AppSettings["szip_IncomingAssetStatus"], "szip_IncomingAssetStatus");
SqlBulkCopyColumnMapping mapConfig = new SqlBulkCopyColumnMapping(System.Configuration.ConfigurationManager.AppSettings["szip_IncomingAssetConfig"], "szip_IncomingAssetConfig");
SqlBulkCopyColumnMapping mapIPDNS = new SqlBulkCopyColumnMapping( System.Configuration.ConfigurationManager.AppSettings["szip_IncomingAssetIP_DNSname"], "szip_IncomingAssetIP_DNSname");
SqlBulkCopyColumnMapping mapArea = new SqlBulkCopyColumnMapping( System.Configuration.ConfigurationManager.AppSettings["szip_IncomingAssetArea"], "szip_IncomingAssetArea");
SqlBulkCopyColumnMapping mapContact = new SqlBulkCopyColumnMapping( System.Configuration.ConfigurationManager.AppSettings["szip_IncomingAssetContact"], "szip_IncomingAssetContact");
SqlBulkCopyColumnMapping mapExtension = new SqlBulkCopyColumnMapping( System.Configuration.ConfigurationManager.AppSettings["szip_IncomingAssetExtension"], "szip_IncomingAssetExtension");
SqlBulkCopyColumnMapping mapHWType = new SqlBulkCopyColumnMapping( System.Configuration.ConfigurationManager.AppSettings["szip_IncomingAssetHardwareType"], "szip_IncomingAssetHardwareType");
SqlBulkCopyColumnMapping mapConnections = new SqlBulkCopyColumnMapping( System.Configuration.ConfigurationManager.AppSettings["szip_IncomingAssetCurrentConnections"], "szip_IncomingAssetCurrentConnections");
SqlBulkCopyColumnMapping mapMaxConnections = new SqlBulkCopyColumnMapping( System.Configuration.ConfigurationManager.AppSettings["szip_IncomingAssetMaxConnections"], "szip_IncomingAssetMaxConnections");
bulkcopy.ColumnMappings.Add(mapID);
bulkcopy.ColumnMappings.Add(mapName);
bulkcopy.ColumnMappings.Add(mapSerial);
bulkcopy.ColumnMappings.Add(mapRI);
bulkcopy.ColumnMappings.Add(mapModel);
bulkcopy.ColumnMappings.Add(mapVendor);
bulkcopy.ColumnMappings.Add(mapFRU);
bulkcopy.ColumnMappings.Add(mapLRU);
bulkcopy.ColumnMappings.Add(mapLocation);
bulkcopy.ColumnMappings.Add(mapRack);
bulkcopy.ColumnMappings.Add(mapStatus);
bulkcopy.ColumnMappings.Add(mapConfig);
bulkcopy.ColumnMappings.Add(mapIPDNS);
bulkcopy.ColumnMappings.Add(mapArea);
bulkcopy.ColumnMappings.Add(mapContact);
bulkcopy.ColumnMappings.Add(mapExtension);
bulkcopy.ColumnMappings.Add(mapHWType);
bulkcopy.ColumnMappings.Add(mapConnections);
bulkcopy.ColumnMappings.Add(mapMaxConnections);
while (dr.Read())
{
bulkcopy.WriteToServer(dr);
}
dr.Close();
oledbconn.Close();
CloseDatabaseConnection(1, "ImportDataFromExcel");
Logger.Log("Data Imported from Excel to Database", false);
}
catch (Exception e)
{
Logger.Log("Cannot Read Excel File: " + e.Message.ToString(), true);
}
连接字符串如下：
private string GetExcelConnectionString(string excelfile)
{
Dictionary<string, string> props = new Dictionary<string, string>
{
["Provider"] = "Microsoft.ACE.OLEDB.12.0",
["Extended Properties"] = "'Excel 12.0 XML;HDR=YES'",
["Data Source"] = excelfile
};
StringBuilder sb = new StringBuilder();
foreach (KeyValuePair<string, string> prop in props)
{
sb.Append(prop.Key);
sb.Append('=');
sb.Append(prop.Value);
sb.Append(';');
}
return sb.ToString();
}
如果从其他数据库导入我的应用程序数据库：
public void ImportSmartZoneAssetData()
{
SqlConnection hpamConnection = new SqlConnection(System.Configuration.ConfigurationManager.AppSettings["hpamConnectionString"]);
SqlConnection smartZoneConnection = new SqlConnection(System.Configuration.ConfigurationManager.AppSettings["szConnectionString"]);
string sqlCommand = "select i.pa_deviceid as DeviceID, " +
"i.pa_displayname as DeviceName, " +
"j.PA_MATERIALIZEDSTRPATH as [Location], " +
"k.PA_CONTAINERTYPEID as ContainerTypeID, " +
"l.PA_CONTAINERTYPEDESCRIPTION as ContainerType, " +
"k.PA_DISPLAYNAME as ContainerName, " +
"i.PA_CONTAINERPOSITION as FirstRU, " +
"(select pa_assetvalue from PA_ASSETLIST where PA_PARENTID = i.PA_DEVICEID and PA_ASSETATTRIBUTEID = 24) as SerialNumber, " +
"(select pa_assetvalue from PA_ASSETLIST where PA_PARENTID = i.PA_DEVICEID and PA_ASSETATTRIBUTEID = 25) as BarCode " +
"from pa_device i " +
"left join PA_LOCATION j on i.pa_locationid = j.PA_LOCATIONID " +
"left join PA_CONTAINER k on i.PA_CONTAINERID = k.PA_CONTAINERID " +
"left join PA_CONTAINERTYPE l on k.PA_CONTAINERTYPEID = l.PA_CONTAINERTYPEID";
string ssqltable = "szip_SmartZoneAssetData";
SqlBulkCopy bulkcopy = new SqlBulkCopy(hpamConnection)
{
DestinationTableName = ssqltable
};
SqlDataReader myReader = null;
SqlCommand myCommand = new SqlCommand(sqlCommand, smartZoneConnection);
hpamConnection.Open();
smartZoneConnection.Open();
myReader = myCommand.ExecuteReader();
while (myReader.Read())
{
bulkcopy.WriteToServer(myReader);
}
Logger.Log("Imported Records from SmartZone: " + GetRowsCopied(bulkcopy), false);
myReader.Close();
hpamConnection.Close();
smartZoneConnection.Close();
Logger.Log("Data Imported from SmartZone to Database", false);
}
}
我想知道代码中是否有错误，以及为什么我总是在两种情况下都只丢失一条记录。
/ **************************
在两种情况下摆脱了“while（myReader.Read（））”现在它完美无缺。新代码是：
myReader = myCommand.ExecuteReader();
try
{
bulkcopy.WriteToServer(myReader);
}
catch (Exception e)
{
Logger.Log("Cannot Import SmartZone Device Data: " + e.Message, true);
}
谢谢： - ）
答案 0 :(得分：1)
正如所建议的那样，while（myReader.Read（））正在推进一个寄存器。
我摆脱了＆＃34; while（myReader.Read（））＆＃34;在这两种情况下，现在它的工作完美。新代码是：
myReader = myCommand.ExecuteReader();
try
{
bulkcopy.WriteToServer(myReader);
}
catch (Exception e)
{
Logger.Log("Cannot Import SmartZone Device Data: " + e.Message, true);
}
谢谢： - ）