如何通过事件从UserControl的代码中触发JS

Question

在ASP.NET C#中,我想从UserControl的代码隐藏中显示ALERT('HI'),但不起作用:

用户控制:

<asp:UpdatePanel ID="updatepanel" runat="server" UpdateMode="Conditional">
    <ContentTemplate>
<asp:Button ID="btnSubmit" runat="server" Text="Submit" OnClick="btnSubmit_Click();"/>
    </ContentTemplate>
</asp:UpdatePanel>

ASP.NET页面

protected void btnSubmit_Click(object sender, EventArgs e)
{
    ScriptManager.RegisterStartupScript(this, this.GetType(), "s1", "javascript:alert('hi!')", true);
}

更新:

忘了说ASP.NET页面本身是"prettyPhoto"的弹出窗口.

Answer 1

可能有以下可能的原因尝试更改这些并检查它是否有效

 1). ScriptManager.RegisterStartupScript(this, this.GetType(), "msg", "alert('hi!')", true);//no need to use javascript with alert when bool set to true

 2). ScriptManager.RegisterStartupScript(page, page.GetType(), "msg", "alert('hi!')", true);

 3). ClientScript.RegisterClientScriptBlock(GetType(), "sas", "<script> alert('hi!');</script>", true);