使用c#中的id列表更新多行

Question

我有 id 列表，我想更新数据库表。我正在做这样的事情：

sql = "update table set col = 'something' where id in (@Ids)"

using (var connection = new SqlConnection(_connection)){
   connection.Query(sql, new { Ids = ids});
}

错误是：

System.Data.SqlClient.SqlException: '',' 附近的语法不正确。'

Answer 1

最简单的方法是这样的：

var parameters = new string[ids.Length];
var cmd = new SqlCommand();
for (int i = 0; i < ids.Length; i++)
{
    parameters[i] = string.Format("@Id{0}", i);
    cmd.Parameters.AddWithValue(parameters[i], ids[i]);
}

  cmd.CommandText = string.Format("update table set col = 'something' where id in ({0})", string.Join(", ", parameters));

Answer 2

解决方案：这对我有用

sql = "update table set col = 'something' where id in ("+string.Join(",", ids) + ");";

using (var connection = new SqlConnection(_connection)){
   connection.Query(sql);
}