错误10委派'System.Action' [英] Error 10 Delegate 'System.Action'

问题描述

一些代码在这里

some code here

Action<string> messagetarget;
messagetarget = delegate(string s) { showmessage(s); };
//this.Invoke(messagetarget);

还有一些代码

and some code here

public void showmessage(string thid1)
{
    lvc[0] = DateTime.Now.Hour + ":" + DateTime.Now.Minute + ":" + DateTime.Now.Second;
    lvc[1] = thid1;
    listView2.Items.Add(new ListViewItem(lvc, 0));
}

如果编写此代码，则会出现错误

and if a write this code a got an error

    Action<string> messagetarget;
    messagetarget = delegate(string s, string t) { showmessage(s, t); };
    this.Invoke(messagetarget);

public void showmessage(string thid1,string message1)
{
    lvc[0] = DateTime.Now.Hour + ":" + DateTime.Now.Minute + ":" + DateTime.Now.Second;
    lvc[1] = thid1;
    lvc[2] = message1;
    listView2.Items.Add(new ListViewItem(lvc, 0));
}

我收到一个错误:

Error 10 Delegate ''System.Action<string>'' does not take 2 arguments C:\Users\bibo\Desktop\KryptonFormProject1\KryptonFormProject1\Form1.cs 223 29 KryptonFormProject1

您能解释一下我该怎么办吗?

i got an error:

Error 10 Delegate ''System.Action<string>'' does not take 2 arguments C:\Users\bibo\Desktop\KryptonFormProject1\KryptonFormProject1\Form1.cs 223 29 KryptonFormProject1

can you explain me what can i do ??

推荐答案

看看您对messagetarget的声明-只有一个参数，而您正在尝试传递给委托人两个参数.

Look at your declaration for messagetarget - there''s only one parameter, and you''re trying to pass the delegate two parameters.

更改

Action<string> messagetarget

到

Action<string,string> messagetarget

请参见 Action< T1，T2>委托 [ ^ ]

See Action<T1, T2> Delegate[^]

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