Web Forms :: How To Prevent User To Use All Control In A Web Form Except The Controls Placed At Panel
May 30, 2010
i have a page for registration there is a button when it clicked shows panel contain gridview to selcect a value from it/my proplem :
i want to prevent user to click any control in page except those on the showen panel until the user selects a value from the gridview.all the control should be enabled.an example for what exactly i want to do is when you create a post here in this forum and you click (select Tags) button it shows a list.and the rest of page turns to dark color ,how ?
so how to disable the controls and and enable them?i am using C#
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Jul 30, 2010
I've an application in asp.net, and when i click on back button IE browser taking back to previous page,i want to prevent the user going back to previous form.if user try to going back to previous page a meesage pop-up should show saying "You cannot go back to previous page, you have to re-login to see the previous page".
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Jun 17, 2010
In my application , i'm having a user agreement page which will get displayed when a user login for the first time, in the user agreement page if any user directly type the next page url, application will navigate to the successive pages without accepting the agreement. i want the user to navigated to the same page or login page when he directly type the URL in the agreement page.
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Oct 12, 2010
i friends i am having two forms say form a and formb and having two panels in formb and i want to show this panels from forma based on some condition and the code which i am using is
Dim capfrmobj As New CaptureForm
capfrmobj.panelvf.Visible = True
capfrmobj.pnlc.Visible = False
capfrmobj.pnlnc.Visible = False
then also i am not getting the output
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Jul 1, 2013
I am build Web site using asp.net 4.0 c# ... There are a forum on my website where user can save his personal details. my problem is that when user submit his detail in database and again refresh URL (f5), Â event again arise and request go to server, double entry saved in database. How I can handle it.
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May 2, 2010
I have questions,
I have an application with form authontication , the authontication from username and password in Database.
I would like to prevent user after login from go back and go forwoard for a period of time like a session time out? when the user type user name and password correctly he is able to log in to the application but when he/she log out can not be return to the privious page?
Like a session cockies or like that, sorry I'm professional in this way.
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Jun 11, 2010
I have to access the parent form's controls inside an event handler method on my user control's code behind.
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May 25, 2010
I have a Web User Control I created for authentication. The web user control is inside the box below. Clicking any button (1 or 2) below works correct as it goes to the correct c# button click event in the code behind file. If I press enter on fields a or b it goes to the correct callback (button1's) if I press enter on field c it still goes to button1's callback, not button2's
How can I give my web user control a nice self contained for and view state etc, so it wont mess with the remainder of the page's form?
+--------------+
| User: __a___ |
| Pass: __b___ |
| [button1]|
+--------------+
Prompt:______c______ [button2]
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Jul 23, 2010
I am using asp.net membership and the login control. I would like to prevent a user from logging in with the same use rname if they are already logged in. I would like to place code in the LoggingIn or Authenticate event of the login control to check whether the user is login and prevent them from logging in again. Any ideas on the best way to do this?
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Mar 4, 2011
I have a Web User Control that is sitting in a Tabcontainer on a web page. The user control is on tab 1 and has a listview control in it. In the listview control I have a textbox called txtWorkOrderID. In tab 2 I have a gridview with a button in one of the columns. When the button is clicked I want to grab the ID from the row I'm on and fill the txtWorkOrderID with it on tab 1. I've got things to work as far as grabing the ID and switching back to tab 1, but I keep getting a null reference when I try to put the value into the txtWorkOrderID which tells me its not finding the control. I am using .netVB in VS10. how to reference the textbox in the control on tab 1. here is what I have so far. [Code]....
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Apr 12, 2010
HOW can I prevent a postback from a button in user control inside a modalpopupextender, so that the modalpopupextender doesn't close?
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Jun 3, 2010
I created a user control called userCon.asxc.may i know how do i do when i click on button1,then the userCon.asxc will load into panel1?
I checked on internet, but found only those loading the user control to page when execute.What i want is to load user control into panel1 when button1 is click.thanks for reading.
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Mar 4, 2010
I have a custom control which inherit from the Table class and in the constructor, it takes a an integer as an argument. There is no empty constructor.
Is there a way for the user to set that variable in the properties window after they drag the control onto a form.
I know some .NET controls, you can set the source for the parameter to different things like another control's property, QueryString using just the properties window.
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Oct 4, 2012
I have 2 master pages Default.aspx is from Site.Master and some more pages that are from Admin.Master, I have used the code that to prevent the user from going back to previous pages after logout.
 Here is my code
function preventBack()
{
window.history.forward();
}
setTimeout("preventBack()", 0);
window.onunload = function () { null };
The problem I am facing Admin.
Master page i.e I have Home.aspx, AboutUs.aspx,Admin.aspx,AddItem.aspx I was unable to navigate between those pages also. how to solve this. I have tried other methods also, but still facing same problem.Â
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Oct 21, 2015
I have a login page and a dashboard page. Now user first login and then redirect to dashboard page. User press browser Back navigate button and now it's again on login page.
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Aug 31, 2010
I'm trying to create a user control class that extends Panel. Essentially, what I want to do is to have a panel that fires off an event whenever it's clicked upon.
So, I create something like this:
[Code]....
And then, in the ClickPanel.ascx.cs file:
[Code]....
I'm not exactly sure whether this would work as I haven't had the opportunity to test it yet.
The problem is that I can't have a class inherit from Panel. Creating a user control class requires that my class extend User Control - at least that's what the error messages have been saying up until now. The problem is that if I do extend it from the base class of UserControl then I lose all the functionality of the Panel itself and the entire thing is rendered pointless.
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Jun 16, 2015
I have a signup page and Main page in my web site. i want to prevent an user to type directly the Main page URL, user should have access after signup/login.
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Oct 23, 2010
I am trying to create a web page, that use a user-control (the user control is win-form).I am getting the message : That assembly does not allow partially trusted callers.I put the dll on c:windowsassembly, but I don't know why I getting the above.Here is my code
[code]...
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May 7, 2015
When I click signout I am redirecting to home page but when I click browser back button it is redirecting to previous page how to eliminate this......
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Mar 23, 2010
How do i create a simple web user control like Panel control (System.Web.UI.WebControls.Panel). you can drag any control inside the panel that already in the page that what i want.
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Dec 15, 2010
I have a problem with using login controls form authentication ! as my website serves some pages for guest users(Anonymous user) and some pages are for only secure user(they must have to login for those requested pages)...... my problem is this that when i apply form authentication in web.config file to login control then visual studio directly shows only login page where i want that in general case only : guest user pages must be shown and if user clicks on login then after login the requested page he may open !
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Jun 10, 2010
I have the windows form user control with the name usercontrol.cs .. I want to display this usercontrol.cs in aspx page..I tried the below code..but it produced error.. how to resolve my proplem...thx
Control MyUserControl;
MyUserControl = LoadControl("usercontrol.cs");
MyPlaceHolder.Controls.Add(MyUserControl);
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Jun 3, 2010
i created a user control called userCon.asxc. may i know how do i do when i click on button1, then the userCon.asxc will load into panel1?
I checked on internet, but found only those loading the user control to page when execute. What i want is to load user control into panel1 when button1 is click. .
View 3 Replies
Jul 6, 2010
I want create a user control (Div) like panel to be used in all my web pages. For example, The UserControl can have two DIVs or TRs with a background design. If it's added to a Page, the UserControl has to allow controls to be added into it, i.e. Divs, Labels, and TextBoxes. The height of the div should be AUTO.
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Apr 23, 2010
I am having a very hard time in consuming a very simple web user control that I have built using a Web Application project in VS 2010. The user control works fine as long as the consuming aspx page is in the same project. But after deploying the project using Web Deployment Project into a single assembly I am not able to use it correctly from another aspx page which is in a stand-alone project. The error I see is a null reference exception. Here are the steps that I am following:
1 Create a web user control named WebUserControl_Label using a web application project. This control works fine when used in an webform in the same project.
This is the ASCX of my user control :
<%@ Control Language="C#" AutoEventWireup="true" CodeBehind="WebUserControl_Label.ascx.cs" Inherits="TestWebAppWithCustomControl.WebUserControl_Label" ClassName="TestWebAppWithCustomControl.Controls" %>
<asp:Label ID="Label1" runat="server" ></asp:Label>
This is the code behind:
namespace TestWebAppWithCustomControl
{
public partial class WebUserControl_Label : System.Web.UI.UserControl
{
private string _labelText;
public string LabelText
{
set
{
Label1.Text = value;
}
get
{
return Label1.Text;
}
}
protected void Page_Load(object sender, EventArgs e)
{
}
}
}
2. Create a single assembly for the user control above using a Web Deployment project. The name of the assemby is TestWebAppWithCustomControl.
3. Create a webform in another web application project to use WebUserControl_Label user control. This project has TestWebAppWithCustomControl.dll added as a referemce.
This is how I am using the custom control above in an aspx page:
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="ConsumeTestWebAppUserControl._Default" %>
<%@ Register Assembly="TestWebAppWithCustomControl" Namespace="TestWebAppWithCustomControl" TagPrefix="GBS" %>
<head runat="server">
<title></title>
</head>
<body>
<form id="form1" runat="server">
<div>
<GBS:WebUserControl_Label Id="label1" runat="server" LabelText="This is custom label" />
</div>
</form>
</body>
</html>
The problem is that .NET throws a Null Reference Exception when its trying to set the label text via the LabelText property. It looks like that the label control that lives inside the WebUserControl_Label user control is not getting instantiated and is always null.
I have found a few articles online that talk about creating such distributable user controls using ASP.NET website projects. But if possible I would like to stick with the web application project because of the benefits it brings.
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