SQL中的自動增量列如何在數據表中分配

Question

SqlBulkCopy sqlBulk = new SqlBulkCopy(conn, SqlBulkCopyOptions.KeepIdentity, t);
sqlBulk.DestinationTableName = DestTableName;
sqlBulk.BatchSize = 1000;
sqlBulk.WriteToServer(dt);                   
t.Commit();

如果我分配了我的標識列值，並且如果我不分配它，則顯示“主鍵不允許為空”列，該怎么辦？

Answer 1

請閱讀以下內容：

http://www.4guysfromrolla.com/articles/102109-1.aspx

要么

using (var bulkCopy = new SqlBulkCopy(ConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString, SqlBulkCopyOptions.KeepNulls & SqlBulkCopyOptions.KeepIdentity))
                {
                    bulkCopy.BatchSize = (int)DetailLines;
                    bulkCopy.DestinationTableName = "dbo.myTable";
                    bulkCopy.ColumnMappings.Clear();
                    bulkCopy.ColumnMappings.Add("SourceColumnName", "DestinationColumnName");
                    bulkCopy.ColumnMappings.Add("SourceColumnName", "DestinationColumnName");


                    bulkCopy.WriteToServer(datatable);
                }