I am trying to invoke the js function implemented on the aspx page from a .cs class. But, ScriptManager doesn't seem to exist in .cs class. Basically, the .cs file is a part of dll that I am using in my project. I need to invoke the js function that is implemented on the aspx page, from my .cs file present in the dll.
The js function is successfuly invoked from the aspx page, but when I try the same code in .cs file it says
ScriptManager is inaccessible due to its protection level.
here is code I am trying
protected void MyMethod()
{
ScriptManager.RegisterStartupScript(this, this.GetType(), "key", "jsfunction();", true);
}
any ideas why the same code runs successfuly on the aspx page but not from a .cs class?
ScriptManager.RegisterStartupScript accept Page or Control as first argument. Make sure you pass your current Page to the cs method
protected void MyMethod(Page page)
{
ScriptManager.RegisterStartupScript(page, typeof(UpdatePanel), new Guid().ToString() , "jsfunction();", true);
}
And call from aspx.cs page using:
MyMethod(this.Page);
Well, to overcome the above issue I simply tried with this piece of code
System.Web.UI.ScriptManager.RegisterStartupScript(this, this.GetType(), "key", "jsfunction();", true);
Notice the use of full namespace with ScriptManager.
Related
void RegisterScript()
{
Page.ClientScript.RegisterStartupScript(this.GetType(), "someScript", "alert('I was called from master page!')", true);
}
The above method is called form page_load event of masterpage (Assume Site.master).
Above method registers a script on the contentpage when the contentpage directly inherits the masterpage,
but no script is registered when masterpage is nested.
i.e the contentpage inherits a masterpage (assume view.master) and this masterpage (view.master) inherits the original masterpage (Site.master)
I have already tried ScriptManager.RegisterClientScriptBlock() and this.registerclientScriptBlock() ... how to solve this?
I have my code-behind class and there I have an EventListener, I need to refresh the whole page when my EventListener catches an ´Event´.
How do I do this? I have a JavaScript function in my client-side window.location.reload(true).
The problem is that the javascript never gets executed.
Code-Behind:
private void WebResponse_Msg(object sender, EventArgs e){
ClientScript.RegisterClientScriptBlock(typeof(Page), Guid.NewGuid().ToString(), "refresh();", true);
}
JS:
<script type="text/javascript">
function refresh() {
window.location.reload(true);
}
</script>
Server side code can not trigger javascript (client side code) whenever you want (like when an event is triggered).
However there are several workarounds that I mention 2 of them:
1.Using SignalR
2.Logging that event when triggered in a Session, and checking the session value by ajax periodically.
Background
I have a client-side button click that triggers a server-side function. Before the server side function is called, a loading panel is displayed (div).
The loading panel needs to be removed once the server-side function has completed.
My Solution
After the server-side function is complete I will call a JavaScript function that will remove the div. So as a test i'm calling an alert script. I'm trying to do this from the master page.
Client-Side Code
My PopUp Function
<script>
function PopUp() {
debugger;
alert('TEST');
}
</script>
My Script Manager
<asp:ScriptManager ID="ScriptManager1" runat="server">
</asp:ScriptManager>
Server-Side Code
My Call after server side functions have completed.
//Add the script after <form> tag
bool isClientScriptBlockRegistered = ClientScript.IsClientScriptBlockRegistered("ShowStatus");
if (!isClientScriptBlockRegistered)
{
ScriptManager.RegisterClientScriptBlock(this.Page, this.GetType(), "ShowStatus", "PopUp();", true);
}
Problem
My script isn't called by the server. No alert window is created. When I try to do this from any page other that the master page it works. However on the master page it does not.
Questions
Is there something I'm missing?
Does there need to be a callback or some kind of refreshing of the page for the alert to appear, or can the server just call the script without any action from the client?
Change
ScriptManager.RegisterClientScriptBlock(this.Page, this.GetType(), "ShowStatus", "PopUp();", true);
into
ScriptManager.RegisterClientScriptBlock(this.Page, this.GetType(), "ShowStatus", "setTimeout(function () { PopUp(); }, 10);", true);
or into
ScriptManager.RegisterStartupScript(Page, Page.GetType(), "ShowStatus", "PopUp();", true);
RegisterClientScriptBlock adds the JavaScript code at the top of the page just after the ViewState tag while RegisterClientScriptBlock adds it to the bottom. So if you use RegisterClientScriptBlock and your PopUp() is somewhere lower on the page you'll get an error.
Or by setting a setTimeout you ensure that all the contents is generated and then PopUp() will also be found even is the script block is at the top.
I have the following code to register a javascript function on Page_Load (also tried it on Page_Init). The javascript switches two panels from hidden to shown based on a parameter on load of page:
protected void Page_Load(object sender, EventArgs e)
{
String switchAction = "<script language='javascript'>switchactionpanel(" + (int)((Global.upAction)Enum.Parse(typeof(Global.upAction), Global.ProfileAction.ToString())) + ")</script>";
Page.RegisterClientScriptBlock("switchaction", switchAction);
}
But when the page loads I am receiving an error: $ is not defined.
I looked in Firebug and the jQuery files are being loaded however, the first file that is being loaded in the .Net tab is the page itself. I know the jquery is correct as the same code works on a different page. Where should my RegisterClientScriptBlock be put in the page lifecycle to work correctly when the page loads? Or am I going about this all wrong?
You just need to ensure that the inserted script gets inserted after the JQuery reference.
Use RegisterStartupScript instead -- that inserts the script tag before </form> closing tag.
Not sure if this is relevant but I always use:
<script type="text/javascript"...
Sorry this should have been a comment rather than an answer.
I think it has to do with the register function your using. Try using RegisterStartupScript instead of RegisterClientScriptBlock.
Page.ClientScript.RegisterStartupScript(this.GetType(), "switchaction", "<script language='javascript'>switchactionpanel(" + (int)((Global.upAction)Enum.Parse(typeof(Global.upAction), Global.ProfileAction.ToString())) + ")</script>", false);
I want to execute alert when user clicks LinkButton1.It is not working?
protected void LinkButton1_Click(object sender, EventArgs e)
{
Page.ClientScript.RegisterClientScriptBlock(this.GetType(), "abc", "<script language=javascript>alert(hi)</script>");
}
You mistyped the function name. Change aler to alert. Also, you forgot the delimiters around the string that you are trying to alert.
Page.ClientScript.RegisterClientScriptBlock(this.GetType(), "abc", "alert('hi');", true);
use the below
<linkButton runat="server" id="lnk1" OnClientClick="alert('hi');" />
I hope your sample doesn't have a typo, but you are calling "aler" instead of "alert"!
Also, this doesn't define that your button would run this script when the user clicks the link button, it'll be executed when the page gets loaded.
For having such behavior, you need to use the "OnClientClick" control's property, and set there the name of the function - event handler - that would do the alert.
linkButton1.OnClientClick = "myEventHandler";
And define your script in some JavaScript file or by registering a client script block during the pre-render event of your container control or page.