Web Forms :: Multiple Layout Varieties For A Single User Control?
Feb 2, 2010
I have a user control that contains an image of a product along with some product details.
If the product image is landscape, I want to render the control one way, and if the product image is portrait, I want to render the control a second way.
Example HTML Layouts (drastically simplified):
<div><table><tr><td>
<p><strong>XXXXXX</strong></p>
</td></tr><table></div>
versus
<div><table><tr><td>
<p><em>XXXXXX</em></p>
</td></tr><table></div>
Right now, both layouts are rendered. How can I conditionally render one layout and not the other?
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Mar 5, 2011
It's simple to create both user control from the two world : ASP.NET+Razor or MVC 3.0.But i do not known how to consume the user control FROM the razor"_layout.chtml" page.I want to put such thing within the layout page: <uc:MyTag Prop1="" Prop2="" />So i need to declare this directive at top of the layout file : <%@ Register TagPrefix="uc" TagName="MyTag" Src="Controls/Mytag.ascx" %>
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Mar 8, 2011
I have a user control I'm building that has a table layout with two sets of radio buttons, like:
how I could use a radiobuttonlist for each set of vertical buttons within this layout, unless I used a rowspan on each col, but that seems problematic from a layout perspective? I would rather use a RBL from a programming standpoint.
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Oct 13, 2010
I have a user control which contains a number of child controls. I want to be able to change the layout of the control (i.e. change the markup surrounding the child controls) via a property of the user control, but I don't want to have to duplicate the child controls themselves. This precludes using, say, a MultiView with different versions of the layout in each view, since in that case I'd have to duplicate the controls. I'd also rather use markup than emit the code for the control directly (as you'd do in a server control).
To give a contrived example, say I have a label and a textbox. In one layout, I want the label and textbox to be contained by divs and laid out on top of each other. In an alternate layout, I want them to be contained side by side in a table.
Should I just go ahead and duplicate the controls between each view? It seems like a violation of the DRY principle, but I'm not sure if I have much choice. A partial solution would be making the views of a multiview into naming containers so that I could at least save myself the time of having to prefix the duplicate control IDs with something to make them unique.
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Apr 5, 2010
i want to create a slide show of user selected images, i want to give user an option where he can upload multiple images with single fileupload control,
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May 7, 2015
I had implemented FileUpload code. In which for every particular Id, it creates Folder/Directory (if not exist) on Page _load.Then inside that particular Id's folder it will upload single or multiple files.
HTML:
<asp:Label ID="LFileUpload" runat="server" Text="Upload File"></asp:Label>
<asp:FileUpload ID="FileUpload1" runat="server" Width="300px" AllowMultiple="true"/>
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<asp:Label ID="LMsg" runat="server" Text="" Visible="false"></asp:Label>
[CODE]...
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Jan 26, 2010
I am looking at how best to prevent a single user account logging on multiple times in a webforms application. I know that MembershipUser.IsOnline exists, but I've read a few forum and blog entries suggesting that this can be unreliable, particularly in scenarios where a user closes a browser (without logging out) and attempts to logon with a different machine or browser.
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May 19, 2010
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May 2, 2010
I have an update panel in a user control and I am adding multiple instances of it for example 5.
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Dec 16, 2010
I am looking at how best to prevent a single user account logging on multiple times in a webforms application. I know that MembershipUser.IsOnline exists, but I've read a few forum and blog entries suggesting that this can be unreliable, particularly in scenarios where a user closes a browser (without logging out) and attempts to logon with a different machine or browser.I looked at implementing a last past the post type system; when a user logs on older users are simply kicked off. It seems that FormsAuthentication.Signout() only works for the current user.
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Jun 15, 2010
i try to create dynamic control and have a single event handler to ease the fireevent how do i do it?also can i declare a single event handler to parent control and be use by child control of the same type
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Sep 22, 2010
We need to upload multiple files using ASP.Net in one go. One option is to use the ASP.Net FileUpload control but it seems that it can't upload multiple files in one go. Any other option or ASP.Net FileUpload control can do multiple uploads in one go with some tuning?
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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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Dec 3, 2010
Before I get to the question, let me give a bit of background. I'm trying to develop a custom caching mechanism that I can apply to custom built user controls. (Please be aware that I know that there are some built in caching mechanism in .NET) Depending on certain flags set declaratively in the mark-up the control should load a cached version of its previously rendered content or execute normally (and if certain flags are set it should generate a cache of its content for next time it loads). I would like to be able to pass certain flags declaratively in the mark-up and being able to check their value at Page Init and, depending on the flag value, determine whether the control should load a cached version or not.
<uc:MyUC ID="N1" runat="server"
CacheProp='<%# SomeEnum.A | SomeEnum.B |SomeEnum.C %>'
PropA='<%# this.SomePropA %>'
PropB='<%# (this.SomePropB %>'
PropC='<%# this.SomePropC %>'
/>
The problem that I'm facing is that as far as I'm aware I can only get the value of the properties declaratively assigned in the mark-up if I called the DataBind(). However I'm faced with two problems: Firstly calling this.DataBind() from within MyUC will trigger the binding of all its child controls which would defeat the purpose of the cache; also all user controls have been built so that they will not call DataBind() before the LoadComplete event has fired, so to make sure that the parent controls they live in has done its initialisation and has computed the properties that are declaratively passed to the child user control (ie PropA, PropB, PropC).And now the question: is there a way to bind the CacheProp property so to retrieve its value without data binding all other properties and without triggering the data binding of all its child controls?
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Jun 14, 2010
I got 15 tabs and 15 user controls assigned to each tab.All are loading at once which id delaying the process.
I want to load one user control on selection of a tab in tab container.
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Jan 30, 2010
I have two .NET applications X and Y
a. I want to have User A as a common user for both application X and Y.
b. User A can have different roles on X and Y. Eg. Read permission on Y and Write Permission on Y.
How do i configure ASP.NET membership to achieve about functionality.
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Dec 13, 2010
I have a custom CRM package and I need to allow specific users have different layouts on selected screens. I do not want to support multiple software packages so I am thinking that I have some type of interface that allows a user to select what fields they want to input on a given screen. However, what is the easiest way to make this happen? I am thinking that I have some type of XML file that is read that a user can define.
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Aug 20, 2010
I have a user control that I place on a page severl times. When I make a selection on a ddl in one one control the SelectedIndexChanged event fires for all the control on the page for that ddl. So I get duplication of an insert that I do. Is there a ay to make sure these events are isolated so this doesn't happen.
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Sep 10, 2010
I have an ASP.NET page inside of an ASP.NET Master page, and inside the page I have two instances of the same web user control. I have given them different IDs, but when I click a button on the first user control it causes the second user control to do the expected activity and the first one does nothing. Is there something I need to do to make sure that the controls don't get confused?
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Nov 17, 2010
I have user control page (.acsx file), which has following
<form action=abcd.aspx id="safsdf">
<input name="q" type="text" value="Search this site" size="13" onfocus="this.value='';"/> //this is input box
<input type="submit" name="sa" value="Submit" />
//this is input button </form>
When user click on submit button, then it postback to same page. I have another page , which reference to this user control and that is why multiple <form> tag appears on one single page and it cause my webpage to layout incorrectly. I would like to remove <form> tag from my above user control and replace with some other alternative, which does postback to same page without using <form> tag on user control (I have to remove <form> tag from user control because I must keep my <form> tag on other page).
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Aug 22, 2010
I have built a User Control in VB which displays two gridviews and allows a user to select an item in the first gridview and display multiple rows in the second grid with the key of the selected item from the first. The data to be displayed is passed to the User Control as a datatable object via a public property of the User Control.
The user control works perfectly, but to allow the the subs in the codebehind of the User Control to access the data set when the user control is initialised, I have declared them as "Private Shared".
Having got everything to work, I now want to display multiple instances of the same User Control with different datasets.
However, because my data objects are defined as "Private Shared" each instance of the user control is overwriting the data of the others.
I can fix this problem by removing the "Shared" keyword, and have also tried setting them to "Protected" instead but then my variables expire after being set and contain "Nothing" when I get to the "RowCommand" event in the Code Behind.
I'm sure I must be doing something stupid, because surely the whole idea of User Controls is to make reusable code drven by parameters.
Here is my code:
Main Program .aspx
[Code]....
Main Program Code Behind
[Code]....
User Control .ascx
[Code]....
User Control Code Behind
[Code]....
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Dec 18, 2010
we are working on a portal which will have multiple websites sites loaded in same container meaning there will be a
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i) [URl]
ii) [URl]
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Now top header and left hand side menu are common across the applications while the contents in right hand frame will application specific. How can I achieve this using master page ,without requiring indivdual application to have same master page copied in there virtual directory
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Jul 28, 2010
I have this Web User Control, with 3 controls:
[Code]....
In code behind:
[Code]....
When I try to add two UserControl and I Click in btnSearch of second UserControl, txtSearch.txt returns value of first User control.
How I can get the value of second txtSearch?
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Feb 24, 2014
Is it possible to show 3 "Crystal Report" in single "Report Viewer Control" page??My current code for 1 Crystal Report and 1 Report Viewer control Page is below:Below code Page name is "JpsCrystalReport.aspx"
using CrystalDecisions.CrystalReports.Engine; //for crystal report
using CrystalDecisions.ReportSource;
protected void Page_Load(object sender, EventArgs e)
{
SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings["SQLConnectionString"].ConnectionString);
[code]...
I want that when i click on button it redirects to "JpsCrystalReport.aspx" page as per condition given. Then on "JpsCrystalReport.aspx" page it should execute the 3 crystal reports as per conditions given on button click.Or I had to create 3 different "JpsCrystalReport.aspx" pages (that contains Report Viewer control) to show 3 Different Crystal Reports as per condition on button click?
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Jan 12, 2011
below written question :
1.) What is the name of the OS process in which App Domain resides.
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a.) There will be six different app domain in a single OS process
b.) There will three app domain(one for each application) in a single OS process and some Parallel thread will be executed in each app domain for another instance.
c.) There will be Three OS process corresponding to each application.
3.) If eveything will remain same except there are three web application in place of windows in point 2, will there be any change in functioning.
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