How To Create MVC UserControl
Feb 8, 2011
I am trying to create a user control in an ASP.NET MVC project. I basically have some formatted data that I want to put inside a repeater. In standard ASP.NET, I would populate the control something like this:
<asp:Repeater ID="MyRepeater" runat="server"
DataSourceID="SQLDataSource" DataMember="DefaultView">
<ItemTemplate>
<uc1:Control ID = "MyControl" runat="server"
Field1='<%#Eval("["Field1"]") %>' Field2='<%#Eval("["Field2"]") %>' />
</ItemTemplate>
</asp:Repeater>
And the control would have corresponding properties in the codefile. However, in MVC, I don't get a codefile as standard. I found this question that describes how to add one, but then wondered if there is a better way of doing this in MVC (I couldn't find any decent articles that said the recommended way).
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Similar Messages:
Jan 26, 2011
My ultimate goal is to create a UserControl in a class in my App_Code folder and render the html from that into a string.
The rending of HTML can be done using this example I believe:
How do I get the HTML output of a UserControl in .NET (C#)?
My Question:
I created my user control
public partial class Controls_MyUserControl : System.Web.UI.UserControl
I've registered it in my web.config
<add tagPrefix="UC" src="~/Controls/MyUserControl.ascx" tagName="MyUserControl" />
I can reference this on a page just fine
<UC:MyUserControl ID="MyUserControl1" runat="server" />
Yet when I try to create an object of this control type in a class (in my app_code folder) it doesn't allow me.
Controls_MyUserControl dummy = new Controls_MyUserControl();
The potentially strange thing is when I put this code into a code behind of a page, it works.
what I need to do to have the usercontrol to be able to be created in my class in the app_code folder?
My guess is, is that I need to reference the control in a "using" statement at the top, but I'm not sure what that'd be.
It's not in a namespace to my knowledge (at least there's no namespace, in the code behind of the actually user controls). Though I'm not sure if it inherits one from the System.Web.UI.UserControl.
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Mar 14, 2011
Let's say I wanted to create a user control from a raw string rather than a .ascx file, how would I do that? Temp files are not an option. Is this even possible? I can't find anything online about this.
Bonus: How would I do this with the new razor engine?
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Feb 24, 2010
I am using Visual Studio 2008 with .Net 2.0
I am maintaining and old application in ASP.Net and it has one CustomGridView control with 4000 lines of code. I see that in that file only, when I try to modify any code the IDE does not respond quickly as it does for other files. I thought of creating partial classes for the same but it seems that VS is not reconginzing the new partial class. I am trying to use the variables from the old partial class and it is not able to reconize any variable or method.
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Feb 16, 2011
I have a UserControl that I need to add dynamically. I tried to follow this MSDN article, but I'm not having any success....[URL]
The UserControl is basically an image gallery, and it loads some pictures based on an ID. My idea was to make this ID available as a property. Then when I create an instance of the control, I could set this ID and add it to the form.
I added a reference to the control in the .aspx page that will use it, like this:
<%@ Reference Control="~/PictureGallery.ascx" %>
And in the UserControl I added a ClassName like this:
<%@ Control Language="C#" AutoEventWireup="true" CodeFile="PictureGallery.ascx.cs"
Inherits="PictureGallery" ClassName="PictureGallery" %>
When I try to create an instance in the .aspx.cs like the article suggests, Dim gallery As ASP.PictureGallery, I get an "Type ASP.PictureGallery is not defined".
The article mentions a namespace, ASP, and I tried importing it to the .aspx.cs with no luck. So, I'm not able to get a reference to the UserControl.
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Jul 21, 2010
I though my error was from grid view but I realized it was from the tab container. So I did a bit more research. I wrote a small project and created a usercontrol with tabs in it and I wrote this there -
view plaincopy to clipboardprint?
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Aug 10, 2010
I am building a usercontrol which can display data with many flags. I would like to be able to able to declare it this way, or something similar to that from the asp.net page
<ctl:DisplayItem runat="server" id="ctlTest">
<flags>
<flagIsAvailable />
[code]...
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Mar 17, 2011
I've a ASP.Net page (Default.aspx) which will load UserControl (ucontrol.ascx) dynamically into an UpdatePanel. By using UpdatePanel, we believe we're able to prevent the entire page to be posted-back.
My problem is, within the UserControl, we have some form controls, such as inputs and buttons; after the UserControl is loaded, clicking on any button inside the UserControl will cause the UpdatePanel to be blanked. During the investigation, I found that, breakpoints within the Button1_Click() in the code-behind for the UserControl is never reached. Please reference to the code below, this references to [REFERENCE]1.
[code]....
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Jul 17, 2010
This is page load
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{ [code]...
But in my ascx.cs when IButton1_Click is trigered My name is null
private string _sname;
protected void Page_Load(object sender, EventArgs e)
{ [code]...
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Jan 28, 2011
I have a page with an UpdatePanel with a UserControl in it. That UserControl contains a GridView with a nested UserControl that seems to disappear when the parent UserControl is rebound. I cannot for the life of me figure out why the child UserControl disappears. The code works beautifully on the first load, but any partial postback causes the "Pick" UserControl to disappear.
[Code]....
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Apr 6, 2010
im creating site with usercontrols. I have repeater, inside it is another repeater with usercontrol. My problem is passing BindedValue to usercontrol.Bindings works fine and binds the value i need but it cannot pass the value to usercontrol. When i type it manually it works, when i bind it, it passes null (!).I've tried get,set, functions (ondatabound, onload, oninit), accessing control from code with no luck. Ive read and tried to do all the google solutions but with no luck. (even with creating usercontrol inheritance)
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Sep 27, 2010
There are 2 UserControls UC1 and UC2, and there is one more class C. I want to share the same instance of c in both UserControls. I know that this can be possible with properties in both UC's and by registering UC2 in UC1 or vice versa. But I want the solution to be loosely coupled. Any best possible way without touching the Actual Page (which hosts UC's)? So i need some best possible way between UCs transfering C.
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Jan 31, 2011
I have MainLayout.master that has UC_Menu.ascx on it.
I have a page named Customer.aspx that uses MainLayout.master. Customer.aspx also contains a UserControl named UC_Details.ascx.
How can I have UC_Menu.ascx call a function that is in UC_Details.ascx with this scenario?
I've seen a few similar examples, but none that match this type of layout.
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Apr 6, 2010
I am a little bit of confused here. I translated resx files to lots of languages, and I am looking for the best way to allow user to select it's language.I think that maybe a country selection would be better then a language selection. what do you think?I have a .resx file translation of about 100 languages. What is missing now is an easy to use DropDownList with flags (auto population according to the resx files)I am looking for an easy way to associate the DropDownlList.SelectedIndex to the CultureInfo property, so user will be able select the corect language.Since this is a common use, Is there a ready to use control doing so?
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Dec 8, 2010
I have a UserControl, which contains another UserControl with Button. I want to add an event to that button in first UserControl (parent). I tried to do:
void Page_Init()
{
var btn = ChildControl.FindControl("SearchButton") as Button;
btn.Click += new EventHandler(this.SearchButton_Click);
}
but btn is null. How can I do that ?
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Aug 12, 2010
I have 2 usercontrol in my .aspx page.
usercontorl1:
<asp:textbox id="txt" runat="server"></asp:textbox>
<asp:button id="btn" runat="server" text="send" />
usercontrol2:
Here I have gridview control with checkbox for selection of one or two records. Have one button and when clicking this , i need to get the selected records values and assign this values to the textbox which is in usercontrol1.
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Jul 24, 2010
have a webpage that has a button and 2 userControl placed inside the placeHolder with visible set to false.When run and click on the button, userControl1 will set the visible to true. Now userControl1 is visible and there is also a button inside this userControl1 and when click, will set userControl2 visible to true and hide userControl1. The code below is the code behide for the webpage the do the above task.
[Code]....
Is there a way to do so that when click on the button inside userControl1, is does not show userControl2? I want to do this way is because, the button is for submitting data to database and then will pop up userControl2. When there is an error, only a msgBox will pop up and does not show userControl2.
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Jan 19, 2011
I have two UserControls on a MasterPage. DataEntryUC contains several TextBoxes and DropDownList. NavSaveUC contains navigation buttons. When the user clicks on a navigation button, I will be saving the data entered into DataEntryUC from the NavSaveUC UserControl.
I have a couple of tables in my DB that contain stored procedure names, control names, control types, SqlDbTypes, etc.... that correlate with DataEntryUC.
How do I reference a text box that is on DataEntryUC from NavSaveUC?
I have been working on the following code from NavSaveUC with no luck.
Dim MyControlName = "txtFirstName"
Dim MyControlType = "TextBox"
Dim MyStringValue as String
Dim tmpTxtControl as TextBox
Dim tmpDdlControl as DropDownList
Select Case MyControlType
Case "TextBox"
tmpTxtControl = CType(Page.FindControl(MyControlName, TextBox)
MyStringValue = tmpTxtControl.Text
Case "DropDownList"
tmpDdlControl = CType(Page.FindControl(MyControlName, DropDownList)
MyStringValue = tmpDdlControl.SelectedValue
End Select
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Feb 14, 2013
I have page having two user controls. Now I have a requirement for which i have to trigger one user control event from another user control.
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Dec 11, 2010
I want to register an UserControl in another UserControl but i have some errors like :
Control '4_txtCount' of type 'NumbericTextBox' must be placed inside a form tag with runat=server.
Description: An unhandled exception occurred during the execution of the current web request. review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.Web.HttpException: Control '4_txtCount' of type 'NumbericTextBox' must be placed inside a form tag with runat=server And when i add a server side from tag in my UserControl, i never get the error message.
How can i register and use an UserControl in another UserControl without adding server side form tag in UserControl?
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Feb 10, 2011
I am trying to use the already written code which accesses a control from an other control in the following code.
Controls_SearchFeaturedMerchants UCMerchant = (Controls_SearchFeaturedMerchants)this.Parent.FindControl("UCSearchFeaturedMerchants1");
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Jun 3, 2010
I have an app, where I have a form including 50 equal lines (50 user controls).
How do I set the css in the usercontrol, so e.g. the droplists-colors are different in line 1 and 2 (alternating)?
The way I have it now the 50 lines will we completely equal
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Sep 2, 2010
I have a UserControl called UC_Widget， it inheriting from System.Web.UI.UserControl and ITextControl and it also overide the function AddParsedSubObject.when i used it like below,it runs well.
<uc1:UC_Widget ID="UC_Widget1" runat="server">
hello world
</uc1:UC_Widget>
but,it come out a problem: if i want to use this control to contain another user control,how can i do for this?
<uc1:UC_Widget ID="UC_Widget1" runat="server">
hello world
<uc1:UC_Widget ID="UC_Widget2" runat="server"> [code]...
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Apr 23, 2010
I have added usercontrols to aspx webpage. But usercontrols page_load event is firing twice every time. tell me how to resolve this issue.
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Mar 30, 2010
Send me the tip for passing value from one usercontrol to another usercontrol
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