活动和代表...... [英] Events and delegates...
问题描述
您好，
我已经填写了一张表格，其中包含动态创建的无线电按钮，表格为
。当他们的
..CheckChanged属性发生变化时，我会打开一些单选按钮来触发事件。
我理解并被告知这可以通过事件和代表完成。但我的
代码将无法编译。这就是我所做的。
public delegate void specialRadioEventHandler（object sender，EventArgs e）;
....
....
....
private void BuildMyDialog（）
< br $>
{
//动态创建我的表格。函数调用
page_Load（IsPostBack == false）
....
....
....
RadioButton rb = new RadioButton（）;
if（ RadioMeetMycodnition）
{
rb.AutoPostBack = true;
rb.CheckedChanged + = new MyOwnEventHandler（DoSomething）;
}
public voidDoSomething（object sender，EventArgs e）
{
//仅用于测试目的。
string teststring =" oi";
Response.Write（teststring）;
}
.......
.......
.....
我做错了什么？
谢谢......
Hello,
I have populated an a web form with dynamically created radiobuutons in
a table. I wnat some of the radio buttons to fire events when their
..CheckChanged property has changed.
I understand and was told this can be done with events and delegates. But my
code would
not compile. Here is what i did.
public delegate void specialRadioEventHandler(object sender, EventArgs e);
....
....
....
private void BuildMyDialog()
{
//Dynamically creating my table . Function called in
page_Load(IsPostBack==false)
....
....
....
RadioButton rb = new RadioButton();
if (RadioMeetMycodnition)
{
rb.AutoPostBack = true;
rb.CheckedChanged+=new MyOwnEventHandler( DoSomething );
}
public voidDoSomething (object sender, EventArgs e)
{
//Only for testing purpose.
string teststring = "oi";
Response.Write(teststring);
}
.......
.......
.....
I''am i doing something wrong?
Thanks...
推荐答案
bredal Jensen< br ****** @ jensen.dk>写道：
< snip>
bredal Jensen <br******@jensen.dk> wrote:
<snip>
我做错了什么？
是：
rb.CheckedChanged + = new MyOwnEventHandler（DoSomething）;
你必须使用这种类型事件，即EventHandler：
rb.CheckedChanged + = new EventHandler（DoSomething）;
-
Jon Skeet - < sk *** @ pobox.com>
http：// www .pobox.com / ~siget
如果回复小组，请不要给我发邮件
Yes:
rb.CheckedChanged+=new MyOwnEventHandler( DoSomething );
You''ve got to use the type of the event, namely EventHandler:
rb.CheckedChanged += new EventHandler (DoSomething);
--
Jon Skeet - <sk***@pobox.com>
http://www.pobox.com/~skeet
If replying to the group, please do not mail me too
bredal Jensen< br******@jensen.dk>写道：
< snip>
bredal Jensen <br******@jensen.dk> wrote:
<snip>
我做错了什么？
是：
rb.CheckedChanged + = new MyOwnEventHandler（DoSomething）;
你必须使用这种类型事件，即EventHandler：
rb.CheckedChanged + = new EventHandler（DoSomething）;
-
Jon Skeet - < sk *** @ pobox.com>
http：// www .pobox.com / ~siget
如果回复小组，请不要给我发邮件
Yes:
rb.CheckedChanged+=new MyOwnEventHandler( DoSomething );
You''ve got to use the type of the event, namely EventHandler:
rb.CheckedChanged += new EventHandler (DoSomething);
--
Jon Skeet - <sk***@pobox.com>
http://www.pobox.com/~skeet
If replying to the group, please do not mail me too
这是否意味着，这里没有代表吗？并且唯一的代码
i需要如下？
RadioButton rb = new RadioButton（）;
if （RadioMeetMycodnition）
{
rb.AutoPostBack = true;
rb.CheckedChanged + =新的EventHandler（DoSomething）;
}
public voidDoSomething（object sender，EventArgs e）
{
//仅用于测试目的。
string teststring =" oi";
Response.Write（teststring）;
}
" Jon Skeet [C＃MVP]" < SK *** @ pobox.com>在消息中写道
新闻：MP ************************ @ msnews.microsoft.c om ...
Well does this mean, there is no need for delegates here? and the only code
i need is the following?
RadioButton rb = new RadioButton();
if (RadioMeetMycodnition)
{
rb.AutoPostBack = true;
rb.CheckedChanged+=new EventHandler ( DoSomething );
}
public voidDoSomething (object sender, EventArgs e)
{
//Only for testing purpose.
string teststring = "oi";
Response.Write(teststring);
}
"Jon Skeet [C# MVP]" <sk***@pobox.com> wrote in message
news:MP************************@msnews.microsoft.c om...
bredal Jensen< br ****** @ jensen.dk>写道：
< snip>
bredal Jensen <br******@jensen.dk> wrote:
<snip>
我做错了什么？
是的：
rb.CheckedChanged + = new MyOwnEventHandler（DoSomething）;
你必须使用事件的类型，即EventHandler：
rb .CheckedChanged + = new EventHandler（DoSomething）;
-
Jon Skeet - < sk *** @ pobox.com>
http://www.pobox.com/~skeet
如果回复该群组，请不要也寄给我
Yes:
rb.CheckedChanged+=new MyOwnEventHandler( DoSomething );
You''ve got to use the type of the event, namely EventHandler:
rb.CheckedChanged += new EventHandler (DoSomething);
--
Jon Skeet - <sk***@pobox.com>
http://www.pobox.com/~skeet
If replying to the group, please do not mail me too
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