Question

I have a DataSet populated from Excel Sheet. I wanted to use SQLBulk Copy to Insert Records in Lead_Hdr table where LeadId is PK.

I am having following error while executing the code below:

The given ColumnMapping does not match up with any column in the source or destination

string ConStr=ConfigurationManager.ConnectionStrings['ConStr'].ToString();  using (SqlBulkCopy s = new SqlBulkCopy(ConStr,SqlBulkCopyOptions.KeepIdentity)) {     if (MySql.State==ConnectionState.Closed)     {         MySql.Open();     }      s.DestinationTableName = 'PCRM_Lead_Hdr';     s.NotifyAfter = 10000;      #region Comment     s.ColumnMappings.Clear();      #region ColumnMapping     s.ColumnMappings.Add('ClientID', 'ClientID');     s.ColumnMappings.Add('LeadID', 'LeadID');     s.ColumnMappings.Add('Company_Name', 'Company_Name');     s.ColumnMappings.Add('Website', 'Website');     s.ColumnMappings.Add('EmployeeCount', 'EmployeeCount');     s.ColumnMappings.Add('Revenue', 'Revenue');     s.ColumnMappings.Add('Address', 'Address');     s.ColumnMappings.Add('City', 'City');      s.ColumnMappings.Add('State', 'State');     s.ColumnMappings.Add('ZipCode', 'ZipCode');     s.ColumnMappings.Add('CountryId', 'CountryId');      s.ColumnMappings.Add('Phone', 'Phone');     s.ColumnMappings.Add('Fax', 'Fax');     s.ColumnMappings.Add('TimeZone', 'TimeZone');     s.ColumnMappings.Add('SicNo', 'SicNo');     s.ColumnMappings.Add('SicDesc', 'SicDesc');      s.ColumnMappings.Add('SourceID', 'SourceID');     s.ColumnMappings.Add('ResearchAnalysis', 'ResearchAnalysis');     s.ColumnMappings.Add('BasketID', 'BasketID');     s.ColumnMappings.Add('PipeLineStatusId', 'PipeLineStatusId');      s.ColumnMappings.Add('SurveyId', 'SurveyId');     s.ColumnMappings.Add('NextCallDate', 'NextCallDate');     s.ColumnMappings.Add('CurrentRecStatus', 'CurrentRecStatus');     s.ColumnMappings.Add('AssignedUserId', 'AssignedUserId');     s.ColumnMappings.Add('AssignedDate', 'AssignedDate');     s.ColumnMappings.Add('ToValueAmt', 'ToValueAmt');     s.ColumnMappings.Add('Remove', 'Remove');     s.ColumnMappings.Add('Release', 'Release');      s.ColumnMappings.Add('Insert_Date', 'Insert_Date');     s.ColumnMappings.Add('Insert_By', 'Insert_By');     s.ColumnMappings.Add('Updated_Date', 'Updated_Date');     s.ColumnMappings.Add('Updated_By', 'Updated_By');      #endregion     #endregion      s.WriteToServer(sourceTable);      s.Close();      MySql.Close(); } 

Answer 1

Well, is it right? Do the column names exist on both sides?

To be honest, I’ve never bothered with mappings. I like to keep things simple – I tend to have a staging table that looks like the input on the server, then I SqlBulkCopy into the staging table, and finally run a stored procedure to move the table from the staging table into the actual table; advantages:

• no issues with live data corruption if the import fails at any point
• I can put a transaction just around the SPROC
• I can have the bcp work without logging, safe in the knowledge that the SPROC will be logged
• it is simple ;-p (no messing with mappings)

As a final thought – if you are dealing with bulk data, you can get better throughput using IDataReader (since this is a streaming API, where-as DataTable is a buffered API). For example, I tend to hook CSV imports up using CsvReader as the source for a SqlBulkCopy. Alternatively, I have written shims around XmlReader to present each first-level element as a row in an IDataReader – very fast.