无法使用更新面板从代码隐藏触发 JavaScript 方法 [英] Unable to trigger JavaScript method from code-behind using Update Panel
问题描述
问题详情:
在数据库中保存数据后，我需要向用户显示警报.为此，我从代码隐藏注册了脚本.但是它不适用于更新面板，而在没有更新面板的情况下它可以按预期工作.我需要让它与更新面板一起工作.
After saving the data in DB, I need to show an alert to the user. For this, I have registered the script from code-behind. But it is NOT working with update-panel whereas it works as expected without update-panel. I need to make it work with update-panel.
我尝试在注册脚本时添加 $(document).ready(function () ，但是没有用.
I tried by adding $(document).ready(function () while registering the script, but it didn't work.
然后，我尝试使用 ScriptManager.RegisterClientScriptBlock() 方法代替 Page.ClientScript.RegisterStartupScript()，但它也不起作用.
Then, I tried with ScriptManager.RegisterClientScriptBlock() method instead of Page.ClientScript.RegisterStartupScript(), but it also didn't work.
这是网页(ASPX)的代码片段:
Here is the code snippet of web page (ASPX):
<body>
<form id="form1" runat="server">
<asp:ScriptManager ID="ScriptManager1" runat="server"></asp:ScriptManager>
<asp:Button ID="btnOutsideUpdatePanel" runat="server" Text="Outside UpdatePanel" OnClick="btnOutsideUpdatePanel_Click" />
<asp:UpdatePanel ID="UpdatePanel1" runat="server">
<ContentTemplate>
<asp:Button ID="btnInsideUpdatePanel" runat="server" Text="Inside UpdatePanel" OnClick="btnInsideUpdatePanel_Click" />
</ContentTemplate>
</asp:UpdatePanel>
<uc1:Child runat="server" id="Child1" />
<asp:UpdatePanel ID="UpdatePanel2" runat="server">
<ContentTemplate>
<uc1:Child runat="server" id="Child2" />
</ContentTemplate>
</asp:UpdatePanel>
</form>
</body>
这是用户控件(ASCX)的代码片段:
Here is the code snippet of user-control (ASCX):
<%@ Control Language="C#" AutoEventWireup="true" CodeBehind="Child.ascx.cs" Inherits="UpdatePanelAndScript.Child" %>
<asp:Button ID="btnUserControl" runat="server" Text="User Control" OnClick="btnUserControl_Click" />
网页代码隐藏:
protected void btnOutsideUpdatePanel_Click(object sender, EventArgs e)
{
Page.ClientScript.RegisterStartupScript(this.GetType(), "ShowSuccess", "alert('Hi');", true);
}
protected void btnInsideUpdatePanel_Click(object sender, EventArgs e)
{
Page.ClientScript.RegisterStartupScript(this.GetType(), "ShowSuccess", "alert('Hi');", true);
}
用户控制的代码隐藏:
protected void btnUserControl_Click(object sender, EventArgs e)
{
Page.ClientScript.RegisterStartupScript(this.GetType(), "ShowSuccess", "alert('Hi');", true);
}
推荐答案
你只需要修改如下语句:
You only need to change the following statement:
Page.ClientScript.RegisterStartupScript
(
this.GetType(),
"ShowSuccess",
"alert('Hi');",
true
);
致:
ScriptManager.RegisterStartupScript
(
this,
this.GetType(),
"ShowSuccess",
"alert('Hi');",
true
);
参考:
注册部分页面更新兼容脚本
[...] 如果您要呈现在 UpdatePanel 控件中使用的脚本，请确保调用 ScriptManager 控件的方法.
Registering Partial-Page Update Compatible Scripts
[...] If you are rendering script for use inside an UpdatePanel control, make sure that you call the methods of the ScriptManager control.
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