javascript 删除 ClientScript.RegisterStartupScript 添加的脚本
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Removing scripts added by ClientScript.RegisterStartupScript
提问by Tapas Bose
In my application's login control, I am showing a dialog window if the login failed. In this way:
在我的应用程序的登录控件中，如果登录失败，我将显示一个对话框窗口。这样：
protected void EMSLogin_Authenticate(object sender, AuthenticateEventArgs e) {
log.Info("=============INSIDE EMSLogin_Authenticate======");
RadTextBox UserName = EMSLogin.FindControl("UserName") as RadTextBox;
RadTextBox Password = EMSLogin.FindControl("Password") as RadTextBox;
if (Membership.ValidateUser(UserName.Text, Password.Text)) {
FormsAuthentication.RedirectFromLoginPage(UserName.Text, false);
} else {
ClientScript.RegisterStartupScript(typeof(ScriptManager), "CallShowDialog", "showDialog();", true);
}
}
The JavaScript is:
JavaScript 是：
function showDialog() {
$(document).ready(function () {
$(".jym").dialog("open");
});
}
Now if the login failed the dialog is showing. But The problem is if I refresh the browser window, after one login failed, the dialog again opened, since the $(".jym").dialog("open")is written in the page. Then I have tried
现在，如果登录失败，则会显示对话框。但问题是如果我刷新浏览器窗口，在一次登录失败后，对话框又打开了，因为$(".jym").dialog("open")是写在页面中的。然后我试过了
protected void Page_Unload(object sender, EventArgs e) {
log.Info("=============INSIDE Page_Unload======");
ClientScript.RegisterStartupScript(typeof(ScriptManager), "CallShowDialog", "", true);
}
But no luck.
但没有运气。
Is there any way to solve this problem?
有没有办法解决这个问题？
If I use ClientScript.RegisterClientScriptBlock()this not working, I mean the dialog is not opening on error.
如果我使用ClientScript.RegisterClientScriptBlock()它不起作用，我的意思是对话框没有打开错误。
回答by Steve Wellens
Try calling the function:
尝试调用函数：
ClientScript.RegisterStartupScript(typeof(ScriptManager), "CallShowDialog", "", true);
...in the Page_Load event handler.
...在 Page_Load 事件处理程序中。
Page_Load occurs before the button click event handler. You can verify this by adding the following code and looking in the debug/output window:
Page_Load 发生在按钮单击事件处理程序之前。您可以通过添加以下代码并查看调试/输出窗口来验证这一点：
protected void Page_Load(object sender, EventArgs e)
{
System.Diagnostics.Debug.WriteLine("Page_Load");
}
protected void Button1_Click(object sender, EventArgs e)
{
System.Diagnostics.Debug.WriteLine("Button1_Click");
}
So erasing the script in the Page_Load event handler should clear any previous script that was loaded.
因此，擦除 Page_Load 事件处理程序中的脚本应该会清除之前加载的所有脚本。
