using System.Data.SqlClient;
using System.ComponentModel;
using System.Linq;
#region SqlBulkCopy批量插入数据
/// <summary>
/// 执行SqlBulkCopy批量插入,执行事务。
/// </summary>
/// <param name="connectionString">数据连接</param>
/// <param name="TableName">表名</param>
/// <param name="dt">要插入的数据</param>
/// <returns></returns>
public static int SqlBulkCopy(string connectionString, string TableName, DataTable dt)
{
using (SqlConnection conn = new SqlConnection(connectionString))
{
using (SqlBulkCopy sqlbulkcopy = new SqlBulkCopy(connectionString, SqlBulkCopyOptions.UseInternalTransaction))
{
try
{
sqlbulkcopy.DestinationTableName = TableName;
for (int i = 0; i < dt.Columns.Count; i++)
{
sqlbulkcopy.ColumnMappings.Add(dt.Columns[i].ColumnName, dt.Columns[i].ColumnName);
}
sqlbulkcopy.WriteToServer(dt);
return 1;
}
catch (System.Exception ex)
{
return 0;
}
}
}
}
/// <summary>
/// 批量插入
/// </summary>
/// <typeparam name="T">泛型集合的类型</typeparam>
/// <param name="conn">连接对象</param>
/// <param name="tableName">将泛型集合插入到本地数据库表的表名</param>
/// <param name="list">要插入大泛型集合</param>
public static void BulkInsert<T>(SqlConnection conn, string tableName, IList<T> list)
{
if (conn.State != ConnectionState.Open)
{
conn.Open(); //打开Connection连接
}
using (var bulkCopy = new SqlBulkCopy(conn))
{
bulkCopy.BatchSize = list.Count;
bulkCopy.DestinationTableName = tableName;
var table = new DataTable();
var props = TypeDescriptor.GetProperties(typeof(T))
.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 list)
{
for (var i = 0; i < values.Length; i++)
{
values[i] = props[i].GetValue(item);
}
table.Rows.Add(values);
}
bulkCopy.WriteToServer(table);
}
if (conn.State != ConnectionState.Closed)
{
conn.Close(); //关闭Connection连接
}
}
#endregion