blocks|key|634208|text|要发送给RegisterClientScriptBlock的最后一个参数是true，它告诉方法将脚本包装在<script>块中，但您已经在这么做了。它可能无法工作，因为它呈现了无效的(即嵌套的)脚本标记。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|634209|entityMap^0|4|P|11|4|1H|8|0^^$0|@$1|2|3|4|5|6|7|H|8|@$9|I|A|J|B|C]|$9|K|A|L|B|C]|$9|M|A|N|B|C]]|D|@]|E|$]]|$1|F|3|-4|5|6|7|O|8|@]|D|@]|E|$]]]|G|$]]

The last parameter you're sending to <code>RegisterClientScriptBlock</code> is <code>true</code>, which tells the method to wrap your script in a <code>&lt;script&gt;</code> block, but you're already doing that. It's probably not working, because it's rendering invalid (i.e. nested) script tags.

blocks|key|634282|text|我理解您的问题，我建议您执行以下操作。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|634283|1-将你的btSubmit保存在你的|634284|public+void+btnSubmit_Click(Object+o,+EventArgs+e)
{
+++if+(checkFileExists(Convert.ToString(fileInfo)))
+++{
++++++++Page.ClientScript.RegisterClientScriptBlock(this.GetType(),+"Msg",+"<script+type=\"text/javascript\"++language=\"javascript\">function+showMsg(){return+confirm(\"This+image+name+already+exists,+do+you+want+to+replace+it?\");}</script>",+true);
++++++++btnSubmit.OnClientClick+=+"return+showMsg()";
+++}++++
}|code-block|syntax|javascript|634285|删除if(其他内容)。|634286|2-使用Dialog创建一个类似于javascript+confirm的对话框，但带有一个带有自己的单击事件的asp.net按钮。|offset|length|634287|3-改变你的|634288|return+confirm(\"This+image+name+already+exists,+do+you+want+to+replace+it?\");+|634289|在RegisterClientScriptBlock中你的第一个事件与jquery的逻辑对话。|634290|4-在新按钮的新事件中添加额外的逻辑：|634291|if+(something+else)
{
++++//+you´ll+know+the+user+click+your+confirm+button+already!!!
}|634292|我希望这对你有帮助。|634293|entityMap|0|LINK|mutability|MUTABLE|url|http://jqueryui.com/demos/dialog/^0|0|0|0|0|4|6|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|18|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|19|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|1A|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|1B|8|@]|9|@]|A|$]]|$1|K|3|L|5|6|7|1C|8|@]|9|@$M|1D|N|1E|1|1F]]|A|$]]|$1|O|3|P|5|6|7|1G|8|@]|9|@]|A|$]]|$1|Q|3|R|5|F|7|1H|8|@]|9|@]|A|$G|H]]|$1|S|3|T|5|6|7|1I|8|@]|9|@]|A|$]]|$1|U|3|V|5|6|7|1J|8|@]|9|@]|A|$]]|$1|W|3|X|5|F|7|1K|8|@]|9|@]|A|$G|H]]|$1|Y|3|Z|5|6|7|1L|8|@]|9|@]|A|$]]|$1|10|3|-4|5|6|7|1M|8|@]|9|@]|A|$]]]|11|$12|$5|13|14|15|A|$16|17]]]]

I understand your problem and i suggest you do the following. 

1- keep your btSubmit but in your 

<pre><code>public void btnSubmit_Click(Object o, EventArgs e)
{
 if (checkFileExists(Convert.ToString(fileInfo)))
 {
 Page.ClientScript.RegisterClientScriptBlock(this.GetType(), "Msg", "&lt;script type=\"text/javascript\" language=\"javascript\"&gt;function showMsg(){return confirm(\"This image name already exists, do you want to replace it?\");}&lt;/script&gt;", true);
 btnSubmit.OnClientClick = "return showMsg()";
 } 
}
</code></pre>

delete the if(something else).

2- Use <a href="http://jqueryui.com/demos/dialog/" rel="nofollow">Dialog</a> to create a dialog similar to a javascript confirm but with a asp.net button with its own click event.

3- change your 

<pre><code>return confirm(\"This image name already exists, do you want to replace it?\"); 
</code></pre>

in the RegisterClientScriptBlock of your first event with the logic of the dialog of jquery. 

4- In the new event of your new button add your extra logic: 

<pre><code>if (something else)
{
 // you´ll know the user click your confirm button already!!!
}
</code></pre>

I hope this helps you.

blocks|key|850736|text|FishBasketGordo感谢您指出两者之间的区别！是一个很大的帮助！|type|unstyled|depth|inlineStyleRanges|entityRanges|data|850737|直到我做了你所指出的更改，Page.ClientScript.RegisterClientScriptBlock才会触发，即删除标签并添加'true‘作为第四个参数。这可能是一个好主意，以检查是否没有其他脚本块撤销的更改，其中一个没有触发，并且脚本块有一个唯一的名称。|850738|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|F|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|G|8|@]|9|@]|A|$]]|$1|D|3|-4|5|6|7|H|8|@]|9|@]|A|$]]]|E|$]]

FishBasketGordo thanks for pointing out the difference! Was a great help!

Page.ClientScript.RegisterClientScriptBlock did not fire until I made the change you pointed out ie removed the tags and added 'true' as the fourth parameter. It may be a good idea to check that no other script block reverses the changes effected by the the one that's not firing and also that the script block has a unique name.

blocks|key|850787|text|Page.ClientScript.RegisterClientScriptBlock不工作的另一个原因是页面没有服务器端表单，例如<form+id="form1"+runat="server">...+</form>|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|850788|entityMap^0|1U|17|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|$]]

Another reason for Page.ClientScript.RegisterClientScriptBlock not working is when the page does not have a server side form e.g. <code>&lt;form id="form1" runat="server"&gt;... &lt;/form&gt;</code>

blocks|key|850874|text|今天早上我也遇到了同样的问题，它只能这样工作：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|850875|Response.Write("<script+type='text/javascript'>alert('"+%2B+AlerteMsg+%2B+"');</script>");|code-block|syntax|javascript|850876|在您的情况下，您可以编写任何您想要的javascript！|850877|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

I had the same problem this morning and it only worked this way :

<pre><code>Response.Write("&lt;script type='text/javascript'&gt;alert('" + AlerteMsg + "');&lt;/script&gt;");
</code></pre>

in your case you can write whatever javascript you wants !

blocks|key|850944|text|今天早上我也遇到了同样的问题，它只能这样工作：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|850945|Response.Write("alert('“%2B+AlerteMsg+%2B+"');")；|850946|在您的情况下，您可以编写任何您想要的javascript！|850947|从上面的代码..现在我需要按两次back+button..then，它将返回..任何解决方案|850948|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|J|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|K|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|L|8|@]|9|@]|A|$]]|$1|F|3|G|5|6|7|M|8|@]|9|@]|A|$]]|$1|H|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|I|$]]

I had the same problem this morning and it only worked this way :

Response.Write("alert('" + AlerteMsg + "');");

in your case you can write whatever javascript you wants !

from above code.. now i need to press 2 times back button..then it goes back..
any solution

I am trying to fire a pop up as shown below, but it is not working. Please help

<pre><code>public void btnSubmit_Click(Object o, EventArgs e)
{
 if (checkFileExists(Convert.ToString(fileInfo)))
 {
 Page.ClientScript.RegisterClientScriptBlock(this.GetType(), "Msg", "&lt;script type=\"text/javascript\" language=\"javascript\"&gt;function showMsg(){return confirm(\"This image name already exists, do you want to replace it?\");}&lt;/script&gt;", true);
 btnSubmit.OnClientClick = "return showMsg()";
 }
 if (something else)
 {
 // It does whatever is here but never pops the question above
 }
}
</code></pre>

and on the button I have

<pre><code> &lt;asp:Button class="Button" ID="btnSubmit" CausesValidation="True" Text="SUBMIT" runat="server"
 OnClick="btnSubmit_Click"&gt;&lt;/asp:Button&gt;
</code></pre>

Using Page.ClientScript.RegisterClientScriptBlock not working

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我试着弹出一个弹出窗口，如下所示，但它不工作。请帮帮忙public void btnSubmit_Click(Object o, EventArgs e){    if (checkFileExists(Convert.ToString(fileInfo)))    {        Page.ClientScript...

问使用Page.ClientScript.RegisterClientScriptBlock不起作用
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问使用Page.ClientScript.RegisterClientScriptBlock不起作用EN