Sql server 2008 在目标表中插入标识的SQLBulkCopy
我正在尝试使用SQLBulkCopy向SQL Server插入通用列表 我在身份识别领域有困难 我希望目标表生成标识字段 我该怎么处理这个,, 这是我的密码Sql server 2008 在目标表中插入标识的SQLBulkCopy,sql-server-2008,c#-4.0,sqlbulkcopy,Sql Server 2008,C# 4.0,Sqlbulkcopy,我正在尝试使用SQLBulkCopy向SQL Server插入通用列表 我在身份识别领域有困难 我希望目标表生成标识字段 我该怎么处理这个,, 这是我的密码 using (var bulkCopy = new SqlBulkCopy(ConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString)) { bulkCopy.BatchSiz
using (var bulkCopy = new SqlBulkCopy(ConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString))
{
bulkCopy.BatchSize = (int)DetailLines;
bulkCopy.DestinationTableName = "dbo.tMyTable";
var table = new DataTable();
var props = TypeDescriptor.GetProperties(typeof(tBFFormularyStatusList))
//Dirty hack to make sure we only have system data types
//i.e. filter out the relationships/collections
.Cast<PropertyDescriptor>()
.Where(propertyInfo => propertyInfo.PropertyType.Namespace.Equals("System"))
.ToArray();
foreach (var propertyInfo in props)
{
bulkCopy.ColumnMappings.Add(propertyInfo.Name, propertyInfo.Name);
table.Columns.Add(propertyInfo.Name, Nullable.GetUnderlyingType(propertyInfo.PropertyType) ?? propertyInfo.PropertyType);
}
var values = new object[props.Length];
foreach (var item in myGenericList)
{
for (var i = 0; i < values.Length; i++)
{
values[i] = props[i].GetValue(item);
}
table.Rows.Add(values);
}
bulkCopy.WriteToServer(table);
}
我也试过了
using (var bulkCopy = new SqlBulkCopy(ConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString, SqlBulkCopyOptions.KeepIdentity))
{
最后我用这种方式完成了
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.ColumnMappings.Add("SourceColumnName", "DestinationColumnName");
bulkCopy.ColumnMappings.Add("SourceColumnName", "DestinationColumnName");
.
.
.
.
bulkCopy.ColumnMappings.Add("SourceColumnName", "DestinationColumnName");
bulkCopy.WriteToServer(datatable);
}
我知道这是一个老生常谈的问题,但我认为值得添加以下选项: (如果已经有正确的架构,可以跳过1,2,3)
Clone
方法生成具有相同架构且无数据的DataTableWriteToServer
(如果列顺序匹配,则可以读取标识值。如果SqlBulkCopy的构造函数中未提供该选项,则默认设置为忽略这些值,并让目标提供它们)重要的一点是,如果列的顺序正确(包括标识列),那么一切都会为您处理。这篇文章让我的日子变得美好=)
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.ColumnMappings.Add("SourceColumnName", "DestinationColumnName");
bulkCopy.ColumnMappings.Add("SourceColumnName", "DestinationColumnName");
.
.
.
.
bulkCopy.ColumnMappings.Add("SourceColumnName", "DestinationColumnName");
bulkCopy.WriteToServer(datatable);
}