Web Forms :: Calling A Page Method Using InvokeMethod From An User Control?
Jan 18, 2011
I have an aspx page which has an usercontrol say UC1 for selecting query paramters.
UserControl uc1 in turn opens another user control (UC2) as a modal popup.
1. On OK click, I am setting the values of another usercontrol (uc1) from the control uc2 by invoking a page method(doAccept). It appears to call the method and values seems to be set. But the problem the usercontrol/page does not display the new value or in otherwords it is not refreshed.
If the above is not possible is there any other way to refresh the parent page.
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Apr 5, 2010
Does anyone know how I would go about calling a method found in the master page code behind from a user control's code? The user control is on the master page. The method I want to call is public.
I can easily call a method found in the pages code behind using:
Page.GetType().InvokeMember("TheMethodsName", System.Reflection.BindingFlags.InvokeMethod, null, this.Page, null);
or I can call a method found on the master page from my aspx page code behind using:
((MasterPage_MasterPage)Page.Master).TheMethodsName();
But I am stuck because I can't find the MasterPage in my user control code behind.
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May 3, 2010
I am using a user control that I created (just a .cs file not an .ascx file), that does some magic and depending on a value generated by the control, I need it to do something on the parent page that is 'hosting' the control. It needs to call a method under certain circumstances (method is on the parent control).the control is placed on the parent page like so:
<customtag:MyControl ID="something" runat="server" />
I'm dynamically creating buttons etc on the control itself but when a button is clicked, let's say for example that there's a text box on the control and if the value of the textbox is "bob" it needs to call a method on the page that's housing the control...how can I accomplish this?
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Oct 3, 2010
I looked up the threads about this. But I couldn't do it...
this is my method in aspx.page:
public void MesajlariGetir()
{
DataSet ds = new DataSet();
SqlConnection con = new SqlConnection();
SqlCommand cmd = new SqlCommand("msjlarigetir", con);
[Code]....
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Sep 23, 2010
I have a Web Form that uses Master Pages. I only tell you this part so you understand the layers.
On the page, I have a web user control. I can see public methods on that user control by simply calling userControlName.PublicMethod();
However, there is a button on this page which generates additional content. This content is based on a placeholder control and adding additional web user controls :
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Now, on the main form, I want a submit button that will call a public method of each "subForm" that was added at runtime.
I have tried various forms of Control C = This.Page.Master.FindControl("cpBody").Findcontrol("ctl01")... etc, but can never seen to get the right combination.
Below is a listing of the web form
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Nov 5, 2010
I have a page called main.apsx and on that page I have a multiview with a couple of view panes. In main.aspx I also have an have a buttons.ascx file with a few link buttons. When these buttons are clicked I want them to show the the selected view panels in multiview in main.aspx.
I cant seem to figure out where to put the action code for the link buttons. Do I put it into my buttons.ascx.cs file or into main.aspx.cs? I presume in buttons.ascx.cs, but if I do that, how will the buttons find the multiview control?
This is the code for on of my buttons in buttons.ascx.cs
[Code]....
When I run it like this is gives an error
The name 'MultiView1' does not exist in the current
The name 'View1' does not exist in the current
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Mar 11, 2011
i created a user control and place a button on it.i drag dropped the user control on a aspx page and wrote the grid load and button clicks in the
user control.now i got a requirement to use the same user control grid and button to again use on the same page.however the data populated will be different and the button click functionality will be different.how can i reload the different data on the second grid as i had already wrote the code in the first one
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Apr 7, 2010
i'm trying to learn about user controls. I created a user control that has a textbox and a button. What i'd like to be able to do is when i click the button in the user control, populate a label in the aspx page. I understand that i could just have a button on the page that uses some properties on the user control to get that information.. but i'd like to know how to do it with the button the user control.. the reason for this is the button is just an example.. a learning tool. if i can get this working, i'd likely be putting thing in the user control that might require this kind of passing information. Anyway.. i've found some c# examples that i tried to get working as vb.. but once started getting into the delegates and events.. well.. it made me turn to this post.
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May 18, 2010
I'm trying to call a method from a control's event property.
Ex. <asp:textbox id="textbox1" runat="server" OnLoad="test" />
Code Behind:
public void test(object sender, EventArgs e)
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Jan 10, 2010
I'm using a custom AJAX based validation control to check user name availability from database. It's working alright in my development machine but in production server we are using Windows Authentication to authenticate by domain.The control is inherited from base validator and checks for user name availability from database perfectly but on form submission at Page.IsValid check it gives the following error.
remote server returned an error 401 unauthorized
Both the form and webmethod are in the same page/file. I even tried creating webmethod in a separate standalone webservice but error still there.
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Aug 10, 2010
I called the server side Method using AJax and inside Method iam going to Add the Media Player to Place Holder i debug the code every thing is ok but Place Holder is not Displaying any thing.
Here is my code of JQUERY
[Code]....
and Here is my server side Method
[Code]....
and in aspx code i just put the DataList for binding the Thumbnail Images and Place Holder control for displying the Media Player .
But Place holder is not going to visible after the calling sercer side Method to JQUERY. Is there any thing iam doing wrong.
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Mar 30, 2010
I want to call a javascript method during page load. I am using application.master of the sharepoint server 2007 as the master page . In the content page i want to call a custom method named OnLoadFun() during loading the content page. I have written the function inside script tag in the PlaceHolderAdditionalPageHead id section of the content page.
[Code]....
How do i call the OnLoadFun method so the i is being called onload time. i tried putting window.onload=OnLoadFun surrounded by script tag within the PlaceHolderMain content section.
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Feb 3, 2010
let us say 'default.htm' (.aspx is not possible due to whatever reason) is "calling" 'start.aspx' as following:
<a href="start.aspx"></a>
now i would like to have a method in 'start.aspx' letting me know, from which page 'start.aspx' had been "called" (in my sample this would be 'default.htm'). what would the c#-code look like?
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Jul 27, 2010
I have the following method in a class withing a website.
public static void Authorise(int role, Page callingPage)
{
callingPage.Master.FindControl("divUnauthorised").Visible = true;
callingPage.Master.FindControl("ContentPlaceHolder2").Visible = false;
}
Now this works fine but I really want to just have the one parameter of role and not require the page to pass itself into the method. Is there a way of finding the object that called the method and casting it to a System.Web.UI.Page?
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Sep 7, 2010
I have a problem with calling a method on a aspx page from a usercontrol.
The case is: I have 1 main page with 5 usercontrols, when something goes wrong in the code I want to display the error message in a Modalpopup Extender. I can create for each usercontrol a different modalpopup extender but isn't much easier when I make 1 popup in the aspx page. But the problem is: How should I call a method in the aspx page that open the popup?
I have search several hours on the internet but can't find anything useful.
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Oct 25, 2010
I am to access a method on my master page. I have an error label which I want to update based on error messages I get from my site.
public string ErrorText
{
get { return this.infoLabel.Text; }
set { this.infoLabel.Text = value; }
}
How can I access this from my user control or classes that I set up?
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May 23, 2010
I need to update datalist in image gallery when fileupload has been completed.
<div style="display: block;">
<div>
<div style="padding-left: 15px; padding-right: 15px;">
<div>
<uc1:ctrlFileUpload ID="ctrlFileUpload1" runat="server" />
<uc2:ctrlImageGallery ID="ctrlImageGallery1" runat="server" />
</div>
<div>
</div>
</div>
</div>
</div>
In the Control File Upload I need to fire the the other ctrl to refresh the page.
<asp:UpdatePanel ID="UpdatePanelUploadArea" runat="server" UpdateMode="Conditional">
<ContentTemplate>
<span>
<asp:FileUpload ID="FileUpload1" runat="server" />
<br />
<asp:Button ID="UploadButton" runat="server" Text="Upload Now" OnClick="UploadButton_Click" />
<asp:Label ID="lblResult" runat="server" ForeColor="#0066FF"></asp:Label>
<br />
</span>
</ContentTemplate>
<Triggers>
<asp:PostBackTrigger ControlID="UploadButton" />
</Triggers>
</asp:UpdatePanel>...........
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Mar 8, 2011
Is there a way by which i can achieve functionality of page method inside a user control.
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Aug 4, 2010
, imagine a Master page that implements IFooMaster with a method
ShowFancyMessagePopupTheBusinessCantLiveWithout(string message);
I am in a page that inherits this master page. Upon a checkbox being unchecekd, I want to show a message to the user that if they save it, they can't re-check the checkbox without some admin action.
I've been given feedback that I can't just use an alert('message'); in javascript because they want the consistent look of these messages.
Next, I tried to make an ajax call via PageMethods (as that's what everything else in this codebase uses) to show a message. My problem lies in this method being static.
[WebMethod]
public static void ShowSuperImportantMessage()
{
if(!checkboxICareAbout.Checked)
((IFooMaster)Master).ShowFancyMessagePopupTheBusinessCantLiveWithout("If you uncheck that thing, you can't recheck it.");
}
Since ShowSuperImportantMessage() is static, I can't access Master from within. The method on the master page looks more or less like this:
public void ShowFancyMessagePopupTheBusinessCantLiveWithout(string message)
{
lblGenericMessage.Text = message;
btnGenericMessageOK.Focus();
upGenericMessage.Update();
mpeGenericMessage.Show();
}
mpeGenericMessage is an ajaxtoolkit:ModalPopupExtender.
upGenericMessage is an update panel.The other 2 are obvious.
Can I do some jQuery kung-fu to show that stuff? I tried, but the solution complained that the controls I tried to refer to by ClientID didn't resolve since they were on the Master page.
quick edit: Before anyone tells me the architecture is a problem, or I shouldn't have put such a thing on a master page, or w/e...
I know the situation is not ideal, but I this is inherited code, and I can't drop it all and rewrite half of their web stack.
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Jul 4, 2010
i have a web page and inside the page has a placeholder that contains 2 user controls and both visible set to false.
When i click on button1 on the page, it will set the visible of usercontrol1 to true. May i know how do i do it so that when i click on button2 that IS INSIDE usercontrol1, it will hide usercontrol1 from placeholder and set usercontrol2 visible =true?
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Sep 1, 2010
I'he created user control. that contains some register form.I want ot call that user control Dynamically when i click the button....is it posible?
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Nov 23, 2010
How do you call a codebehind/class method from a gridview in an aspx page? Also, I need to pass the value of databound column to that method. Is this possible?
Something like this:
<asp:BoundField DataField="Precision" />
<asp:BoundField DataField="MyNumber" DataFormatString="FormatHelper.Format(MyNumber, Precision)" />
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Jul 19, 2010
I am using the Login Control and the Login.aspx page for Login authentication. How can I call login from another page or a webservice method with a Userid and password parameters.
[Code]....
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Jan 7, 2011
I have a page that contains a few user controls which all use an id in a querystring. I want to change this so that the page can send the id to the user control and can call a function on the user control.
Also is it possible for the user control to get the id from the page or a control on the page as its parent?
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Sep 28, 2010
In the content page, I have an ajax accordion pane with couple of panes. Within each of those panes there is 1 user control. Initially all the panes except the first one (AccordionPaneMain) is enabled. The first pane user control contains a form view . In formview itemcommand I am doing some processing and then was trying to enable rest of the panes by calling the function showPanes in the main page by using invoker method. My problem is, the method (showPanes) is getting executed but the panes are not enabled.
Sections of code below
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