ASP.NET的SqlBulkCopy用法

/// <summary>
/// DataTale整张表数据插入数据
/// </summary>
/// <param name="dt">要插入的table数据</param>
/// <param name="tableName">目标数据表名</param>
/// <param name="fieldName">必须提供所有的字段</param>
/// <returns>返回成功，或者失败 true  or false</returns>
public static bool SqlBulkInsert(DataTable dt, string tableName,string[] fieldName)
{
using (SqlConnection conn = new SqlConnection(Conn.ConnString))
{
conn.Open();
using (SqlBulkCopy bulk = new SqlBulkCopy(Conn.ConnString))
{
try
{
//when the table data handle done
bulk.DestinationTableName = tableName;
for (int i = 0; i < fieldName.Length; i++)
{
bulk.ColumnMappings.Add(fieldName[i], fieldName[i]);
}
bulk.WriteToServer(dt);

//去重
using (SqlCommand cmd = conn.CreateCommand())
{
StringBuilder temp = new StringBuilder();
temp.AppendFormat(" delete from {0} where IsDelete=1 and Name in( ", tableName);
temp.AppendFormat(" select distinct Name from {0} where IsDelete=1 group by Name having COUNT(Name)>1) and ", tableName);
temp.AppendFormat(" Id not in(select min(Id) from {0} where IsDelete=1  group by Name having COUNT(Name)>1) ", tableName);
cmd.CommandText = temp.ToString();
cmd.ExecuteNonQuery();
}
return true;
}
catch
{
return false;
}
finally
{
conn.Close();
bulk.Close();
}
}
}
}