作者：时尚淘宝交__流站 | 来源：互联网 | 2023-09-09 12:37
我在表中添加了after insert触发器，并在触发器中调用了c#编译的.dll，但是一执行insert操作，就报如下错误
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| 消息 6522，级别 16，状态 1，过程 TestSql，第 1 行
在执行用户定义例程或聚合 "TestSql" 期间出现 .NET Framework 错误:
System.Security.HostProtectionException: 试图执行 CLR 主机禁止的操作。
受保护的资源(只有完全信任才可访问)是: All
要求的资源是: UI
System.Security.HostProtectionException:
在 CLRTriggers.Test()
。 |
我不懂sqlserver和c#（由于c#语法和java的相似性，所以这里基本靠猜……），上网了搜索了一下仍然搞不懂这是什么意思。
在sqlserver中添加.dll如下（叫做clr？）
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| Create ASSEMBLY Test
FROM 'd:\test.dll'
WITH PERMISSION_SET = SAFE; |
在表中添加触发器如下，
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| CREATE TRIGGER TestSql
on Table_2
AFTER INSERT
AS
EXTERNAL NAME Test.CLRTriggers.Test |
.dll源码如下（一半是抄的官网例子…………）,
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| public class CLRTriggers
{
[SqlTrigger(Name = @"Test", Target = "[dbo].[Table_1]", Event = "AFTER INSERT")]
public static void Test()
{
string index;
string name;
string time;
SqlCommand command;
SqlTriggerContext triggCOntext= SqlContext.TriggerContext;
SqlPipe pipe = SqlContext.Pipe;
SqlDataReader reader;
switch (triggContext.TriggerAction)
{
case TriggerAction.Insert:
using (SqlConnection connection
= new SqlConnection(@"context cOnnection=true"))
{
connection.Open();
command = new SqlCommand(@"SELECT * FROM INSERTED;",
connection);
reader = command.ExecuteReader();
reader.Read();
index = Convert.ToString(reader[0]);
name = (string)reader[1];
time = (string)reader[2];
reader.Close();
string message = "{" + "index:" + index + ",name:" + name + ",time:" + time + "}";
int port = 6385;
IPAddress ip = IPAddress.Parse("127.0.0.1");
IPEndPoint ipEnd = new IPEndPoint(ip, port);
string pwd = "123456";
Socket client = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
try
{
client.Connect(ipEnd);
byte[] byteCOntent= Encoding.GetEncoding("GBK").GetBytes(pwd);
client.Send(byteContent, byteContent.Length, SocketFlags.None);
string recv = "";
byte[] buffer = new byte[1024];
int num = client.Receive(buffer, buffer.Length, SocketFlags.None);
recv += Encoding.GetEncoding("GBK").GetString(buffer, 0, num);
if (recv.Equals("ok"))
{
byteCOntent= Encoding.GetEncoding("GBK").GetBytes(message);
client.Send(byteContent, byteContent.Length, SocketFlags.None);
client.Close();
}
else
{
client.Close();
}
}
catch (Exception e)
{
Console.WriteLine(e.Message);
}
}
break;
}
}
} |
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