Question

C#多线程函数如何传参数

Thread th = new Thread(new ThreadStart(DownLoad));
th.IsBackground = true;
th.Start();

private void DownLoad(){ }
我现在想让委托实现参数的传递，就是：
private void DownLoad(string str){ }
如何实现呢。我有找到一个解决方法是：
MyDelegate dele = new MyDelegate (DownLoad);
DownLoad.BeginInvoke("abcd");
可是我没解决掉，有谁知道的帮帮我 。在这里多谢拉。

Answer 1

你那个方法我没怎么用过
这个是我写的一个程序中线程的创建
struct
myarg{
U32
*fd;
U32
*fd_id;
U32
*qsend_msgid,*qrecv_msgid;
struct
my_msg_st
*qsend_data;
struct
my_msg_st
*qrecv_data;
};
main（）
{
pthread_t
tidp_init,tidp_read,tidp_write;
my_arg.fd
=
fd;
my_arg.qrecv_msgid
=
&recv_msgid;
my_arg.qsend_msgid
=
&send_msgid;
if(pthread_create(&tidp_init,NULL,thread_fun_date,&my_arg)
!=
0)
{
printf("thread_fun_init
is
over
!\n");
}
if(pthread_create(&tidp_read,NULL,thread_fun_read,&my_arg)
!=
0)
{
printf("thread_fun_read
is
over
!\n");
}
if(pthread_create(&tidp_write,NULL,thread_fun_write,&my_arg)
!=
0)
{
printf("thread_fun_write
is
over
!\n");
}
}
void*thread_fun_read(void
*
my_arg)
{
printf("!!!!!!!
thread_fun_read
!!!!!!!!!!!!\n");
U32
i;
pthread_t
tidp;
struct
myarg
*p_my_arg,fd_myarg[UART_NUM];
p_my_arg
=
(struct
myarg
*)my_arg;
}

Answer 2

class Params // 线程函数参数类型
{
public int inparam = 0; // 表示一个传入的值
public int outparam = 0; // 表示一个返回的值
}

var pm = new Params { inparam = 1 };
var thread = new Thread(param =>
{
((Params)param).outparam = 10;
Thread.Sleep(2000);
});
thread.Start(pm);
thread.Join();
MessageBox.Show("传出参数的值是 " + pm.outparam.ToString());

Answer 3

启动带参数的线城 方法接受参数必须用OBJECT类型接受再转换
System.Threading.Thread HangUpthread = new Thread(new ParameterizedThreadStart(OnHangUp));
HangUpthread.Start(data);
data必须是 OBJECT类型 然后在接受里面再转换 也就是说那个函数的参数必须是OBJECT类型！
void test(object date)

说了参数必须是OBJECT类型
private void DownLoad(object str)
{
string str1=(string )str //然后里面再转换成string
}

Answer 4

你INVOKE时没用delegate啊，你到底想做什么

Answer 5

private void DownLoad(object objstr)
{
string str=(string)objstr
}

Thread th = new Thread(new ParameterizedThreadStart(DownLoad));
th.IsBackground = true;
th.Start(参数);

给分了吧