如何通过 C# 查询 MySQL Max_Allowed_Packet?
How can I query the MySQL Max_Allowed_Packet through c#?
我正在尝试检查 max_allowed_packet
尺码的值。这是我的代码:
public int MaxAllowedPacket()
{
var max = 0;
using (var conn = new MySqlConnection(_ConnectionString))
{
var sql = conn.CreateCommand();
sql.CommandText = "SHOW VARIABLES like 'max_allowed_packet'";
try
{
conn.Open();
var reader = sql.ExecuteReader();
// not sure where to go from here
}
catch (Exception ex)
{
// I've got some logging here
}
}
return max;
}
我怀疑查询的格式或执行错误,因为我的结果总是
-1
编辑:
我已编辑代码以使用 sql.ExecuteReader()
但现在的结果是:
"Enumeration yielded no results".
最终我自己弄明白了,并想在这里post它,在这被否决之前...
var reader = sql.ExecuteReader();
reader.Read();
max = reader.GetInt32(1);
最好在附近放置一些 try catch,您可以选择通过 reader.GetString(0)
查询第一个字段,这应该 return "max_allowed_packet".
我正在尝试检查 max_allowed_packet
尺码的值。这是我的代码:
public int MaxAllowedPacket()
{
var max = 0;
using (var conn = new MySqlConnection(_ConnectionString))
{
var sql = conn.CreateCommand();
sql.CommandText = "SHOW VARIABLES like 'max_allowed_packet'";
try
{
conn.Open();
var reader = sql.ExecuteReader();
// not sure where to go from here
}
catch (Exception ex)
{
// I've got some logging here
}
}
return max;
}
我怀疑查询的格式或执行错误,因为我的结果总是
-1
编辑:
我已编辑代码以使用 sql.ExecuteReader()
但现在的结果是:
"Enumeration yielded no results".
最终我自己弄明白了,并想在这里post它,在这被否决之前...
var reader = sql.ExecuteReader();
reader.Read();
max = reader.GetInt32(1);
最好在附近放置一些 try catch,您可以选择通过 reader.GetString(0)
查询第一个字段,这应该 return "max_allowed_packet".