blocks|key|1722176|text|if(+IsPostBack+)+
{
++++//+get+the+target+of+the+post-back,+will+be+the+name+of+the+control
++++//+that+issued+the+post-back
++++string+eTarget+=+Request.Params["__EVENTTARGET"].ToString();
}|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|1722177|unstyled|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|G|8|@]|9|@]|A|$B|C]]|$1|D|3|-4|5|E|7|H|8|@]|9|@]|A|$]]]|F|$]]

<pre><code>if( IsPostBack ) 
{
 // get the target of the post-back, will be the name of the control
 // that issued the post-back
 string eTarget = Request.Params["__EVENTTARGET"].ToString();
}
</code></pre>

blocks|key|1722256|text|如果这不能work.Try+UseSubmitBehavior="false"|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1722257|entityMap^0|E|P|0^^$0|@$1|2|3|4|5|6|7|H|8|@$9|I|A|J|B|C]]|D|@]|E|$]]|$1|F|3|-4|5|6|7|K|8|@]|D|@]|E|$]]]|G|$]]

if that doesn't work.Try <code>UseSubmitBehavior="false"</code>

blocks|key|1506994|text|检查请求参数__EVENTTARGET的值，看看它是否是有问题的链接按钮的id。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1506995|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

Check the value of the request parameter __EVENTTARGET to see if it is the id of the link button in question.

blocks|key|1507055|text|按钮的UniqueID将在Request.Form"__EVENTTARGET“中|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1507056|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

The UniqueID of the button will be in Request.Form["__EVENTTARGET"]

blocks|key|1507126|text|根据接受的答案和RealSteel的答案，这可能是一个更完整的答案。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1507127|首先，向.aspx添加一个按钮，如下所示：|1507128|<asp:Button+id="btnExport"+runat="server"+Text="Export"+UseSubmitBehavior="false"/>|code-block|syntax|javascript|1507129|然后是Page_Load方法：|1507130|if(IsPostBack){
+++var+eventTarget+=+Request.Params["__EVENTTARGET"]
+++//+Then+check+for+the+id+but+keep+in+mind+that+the+name+could+be+
+++//+something+like+ctl00$ContainerName$btnExport+
+++//+if+the+button+was+clicked+or+null+so+take+precautions+against+null
+++//+...+so+it+could+be+something+like+this
+++var+buttonClicked+=+eventTarget.Substring(eventTarget.LastIndexOf("$")+%2B+1).Equals("btnExport")

}|1507131|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|P|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|Q|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|R|8|@]|9|@]|A|$]]|$1|K|3|L|5|F|7|S|8|@]|9|@]|A|$G|H]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

Based on accepted answer and the answer of RealSteel this could be a more complete answer.

First add to the .aspx a button like this:

<pre><code>&lt;asp:Button id="btnExport" runat="server" Text="Export" UseSubmitBehavior="false"/&gt;
</code></pre>

Then on the Page_Load method:

<pre><code>if(IsPostBack){
 var eventTarget = Request.Params["__EVENTTARGET"]
 // Then check for the id but keep in mind that the name could be 
 // something like ctl00$ContainerName$btnExport 
 // if the button was clicked or null so take precautions against null
 // ... so it could be something like this
 var buttonClicked = eventTarget.Substring(eventTarget.LastIndexOf("$") + 1).Equals("btnExport")

}
</code></pre>

blocks|key|1722366|text|我只是遇到了同样的麻烦，不得不在Page_Load方法中做一些逻辑判断来处理不同的事件(点击了哪个按钮)。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1722367|我以下面的例子实现了手臂的获取。|1722368|前端aspx源代码(我有许多按钮与ID+F2，F3，F6，F12。|1722369|+++<Button+Style="display:+none"+ID="F2"+runat="server"+Text="F2:Cancel"+OnClientClick="SeiGyo(this)"+OnClick="F2_Click"+/>
++++<Button+Style="display:+none"+ID="F3"+runat="server"+Text="F3:Return"+OnClientClick="SeiGyo(this)"+OnClick="F3_Click"+/>
++++<Button+Style="display:+none"+ID="F6"+runat="server"+Text="F6:Run"+OnClientClick="SeiGyo(this)"+OnClick="F6_Click"+/>
++++<Button+Style="display:+none"+ID="F12"+runat="server"+Text="F12:Finish"+OnClientClick="SeiGyo(this)"+OnClick="F12_Click"+/>|code-block|syntax|javascript|1722370|后端的aspx.cs源代码，我需要做的是判断当Page_Load被触发时哪个按钮被点击了。这看起来有点愚蠢，但很有效。我希望这会对其他人有所帮助。|1722371|Dictionary<string,+string>+dic+=+new+Dictionary<string,+string>();
foreach(var+id+in+new+string[]{"F2","F3","F6","F12"})
{
+++++++foreach+(var+key+in+Request.Params.AllKeys)
++++++++++++++++++++{
++++++++++++++++++++++++if+(key+!=+null+&&+key.ToString().Contains(id))
++++++++++++++++++++++++++++dic.Add(id,+Request[key.ToString()].ToString());+
++++++++++++++++++++}
}|1722372|entityMap^0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|R|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|S|8|@]|9|@]|A|$]]|$1|F|3|G|5|H|7|T|8|@]|9|@]|A|$I|J]]|$1|K|3|L|5|6|7|U|8|@]|9|@]|A|$]]|$1|M|3|N|5|H|7|V|8|@]|9|@]|A|$I|J]]|$1|O|3|-4|5|6|7|W|8|@]|9|@]|A|$]]]|P|$]]

I just got the same trouble, have to do some logic judgement in the Page_Load method to treat different event(which button was clicked).

I realize the arm to get the as the following example.

The front end aspx source code(I have many Buttons with IDs F2, F3, F6, F12.

<pre><code> &lt;Button Style="display: none" ID="F2" runat="server" Text="F2:Cancel" OnClientClick="SeiGyo(this)" OnClick="F2_Click" /&gt;
 &lt;Button Style="display: none" ID="F3" runat="server" Text="F3:Return" OnClientClick="SeiGyo(this)" OnClick="F3_Click" /&gt;
 &lt;Button Style="display: none" ID="F6" runat="server" Text="F6:Run" OnClientClick="SeiGyo(this)" OnClick="F6_Click" /&gt;
 &lt;Button Style="display: none" ID="F12" runat="server" Text="F12:Finish" OnClientClick="SeiGyo(this)" OnClick="F12_Click" /&gt;
</code></pre>

The back end aspx.cs source code, what I need to do is judge which button was clicked when Page_Load was triggered. It seems a little stupid, but works. I hope that will be helpful to some others

<pre><code>Dictionary&lt;string, string&gt; dic = new Dictionary&lt;string, string&gt;();
foreach(var id in new string[]{"F2","F3","F6","F12"})
{
 foreach (var key in Request.Params.AllKeys)
 {
 if (key != null &amp;&amp; key.ToString().Contains(id))
 dic.Add(id, Request[key.ToString()].ToString()); 
 }
}
</code></pre>

In c#, how can I check to see if a link button has been clicked in the page load method? 

I need to know if it was clicked before the click event is fired.

ASP.NET : Check for click event in page_load

在c#中，如何检查页面加载方法中的链接按钮是否已被单击？我需要知道它是否在点击事件被触发之前被点击。

问ASP.NET :在page_load中检查单击事件
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回答 6

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