Web Forms :: ID Property Of A Control Can Only Be Set Using ID Attribute In Tag And Simple Value
Mar 19, 2013
I am using repeater control and in that i am having div in item template. Now I am setting its id using eval. I want to access this div in item databound for that i am making it runat=server. But in doing so I am getting :
"The ID property of a control can only be set using the ID attribute in the tag and a simple value."
I have a User Control (ascx) and a property which a want to display in my categories tab in Visual Studio in the category named "Styles".
[Code]....
And here is the problem: Actually I do not need a get, because I only have to set the property (write only property). But when I omit the get, the property is displayed in the "Misc" category in the categories tab in Visual Studio. Only when I code the get as well, then the property is displayed correctly in the "Styles" category in the categories tab in Visual Studio.
Does anybody know why? How can I display the category correctly only with set?
I created a simple Master Page in Visual Studio 2008:
<%@ Master Language="VB" CodeFile="MasterPage.master.vb" Inherits="MasterPage" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
and got green underlined 'Master' with two warning messages: 1.Validation (ASP.NET): This attribute name must be followed byan equal (=) sign and a value. If the value is in quotation marks, the quotation marks must match. 2. Validation (ASP.NET): Attribute 'Master' is not a valid attribute of element 'Control'.How I can get rid of the messages?
What is the best way to obtain an attribute such as the DisplayNameAttribute of a model's property using the property's name. I am using the following method currently:
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Looking at this long statement, I cannot help wondering if there is a better way to do it.
I want to disallow entering html tags inside specific textFields using custom attribute HtmlRemove, but I don't know how can I acces property/Field value? Model:
here's my situation - I've created some ActionFilterAttributes that I want to apply to a custom Controller class that my other controllers can inherit from. The problem is, I need to set a property on the attribute from the final inheriting controller. So I have something like this :
I think I might have stumbled onto a bug in ASP.NET MVC 3 RC. When I setup my MVC2 project in a new MVC3 project, copy paste classes, code, change name spaces, etc, etc, I ran into an issue in the following, simplified for explanation purpose, scenario:
Model:
public class WineDetails { [SkipRequestValidation] [Required(ErrorMessage = "Beschrijving verplicht")] public string Description { get; set; } }
ViewModel:
public class ViewModelCreateWine { public MasterData MasterData { get; set; } public WineDetails WineDetails { get; set; } }
ActionMethod:
[AcceptVerbs(HttpVerbs.Post)] public ActionResult CreateWine(ViewModelCreateWine viewModelCreateWine) { GetMasterDataRegions(viewModelCreateWine); if (Request.Params.ToString().IndexOf("Save") > 0) { if (TryValidateModel(viewModelCreateWine.WineDetails)) { m_wineService.CreateWine(viewModelCreateWine.WineDetails); return RedirectToAction("index", "Admin"); } } return View(viewModelCreateWine); }
The ActionMethod "CreateWine" needs to call the "CreateWine" method in the WineService so that in the end a new Wine is added to the Database. So far it looks ok. As shown in the above code the [SkipRequestValidation] is set on the "Description" property of the WineDetails model so that the user can add Rich Text to the description and HTML elements are allowed during the Request validation. This works perfectly fine until the Params collection of the Request is accessed in the code to check if the Save button is clicked. When this line of code is trying to execute the following exception is thrown:
Exception Details: System.Web.HttpRequestValidationException: A potentially dangerous Request.Form value was detected from the client (ViewModelCreateWine.WineDetails.Description="<p>HTML Content with...").
The same exception is thrown when I put the [ValidateInput(false)] attribute on the action method. When I comment out the "if" statement and its content there is no issue and the model validation works just fine and skips the Request Validation on the Description property as expected.
In MVC2 the above code worked fine with the [ValidateInput(false)] attribute on the action method.As I said I'm not sure if this is a bug, it very well might be my own stupidity, but I thought it would be worth to mention here. So any feedback is more than welcome.
I'm building a custom web control with a public property which I only want to be available in design time (i.e. make it unavailable in code behind). The DesignOnly attribute promises to do just that, but when I set [DesignOnly(true)] it has no noticeable effect whatsoever:
[Bindable(true)] [Category("Appearance")] [DefaultValue(null)] [Localizable(false)] [DesignOnly(true)] public string MyProp { get { return ViewState["MyProp"] as string; } set { ViewState["MyProp"] = value; } }
The property still appears in code behind IntelliSense. Setting a value to it in code behind works. In these respects, the behavior is just as if the attribute had never been set. And I've cleaned and rebuilt the complete solution. Twice.
my web application i use FindControl to retrieve a Control By Name (it returns an System.Web.UI object). The control can be of various type and I don't want to treat them differently: I'd like to set the Text property to a defined string. I hope there's a class that I may use to cast the control and set the Text property.
I'm basically trying to get a div containing a loading gif to show on my page at runtime. I call it from a button click event as well as in the code flow. It was working before I used the AJAX Update Panels. I've since taken them out as they were causing issues with RegisterClientScriptBlock. By the way, does commenting out the AJAX Markup like this...
I have got a composite control and i would like to dictate which attribute/property is assigned to the control first from the markup?example in the aspx file:
when the control gets created from the mark-up above, ViewType will be assigned first, Which is what I do not want, I would like RealBase to be assigned first under all circumstances. This control is to be users by other developers so I cannot just switch the order.
I have a multi view which contains a view which contains a panel. the name of this panel is "Panel1"I have the following code and my HTML does not display in the rendered page. Any idea why this isn't working, i must be doing something wrong? sw = simple html statement, any would produce same result.
I have create a list of public properties in our custom page. However, when I want to assign the property on any aspx file, it does not show in intellisense and when I use it it said it is a invalid attribute of element "Page".So, 2 question.How do I make it such that it shows up in intellisense?Can I set any localize variable as a value of the property in the page directive?here is the property on my base page:
I currently have a gridview that is displaying tabular data from an sqldatasource that looks something like this:
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Since I have an unpredictable number of categories coming from the database, I would like to continue to use a single datasource with only one query to the database. There is no editing, it is simply for display purposes. What's the simplest way?
I have a web form with an Asp.net PlaceHolder control. By default the control is set to visible false and will be displayed through the code behind based on several criteria. In general this PlaceHolder control wraps several other Asp.net controls. Now a new requirement ask that the controls within the PlaceHolder control be visible at all times an no longer hidden. So in the Aspx code I changed the laceHolder attribute and set it to visible. Now all kinds of Java Script validation errors are occuring and it is a horrible spahgetti code nightmare. Is their a way to set the visible attribute on the control and not have it trigger the validation?
I am having a problem setting the SystemObjectRecordID attribute of my custom control inside a repeater. Currently, the value winds up as zero in the database. Things I have checked:
1) The datatype of the DB column (bigint) and the datatype of AlertId (long) and the datatype of the getter/setter SystemObjectRecordID variable (long) match.
2) If I set '<%# ((Alert)Container.DataItem).AlertId %>' to the Text attribute of a label I get the expected results. So, it has something to do with my custom control and specifically how data isbound to the SystemObjectRecordID attribute.
Now, going to the server, below is what I have for databinding (The page is Default.aspx.cs and the namespace is Company.ProjectWeb.Profiles):
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Currently I am trying to pass the value received from a literal (because I know that the values are received as expected here) to the SystemObjectRecordId object. Still isn't working. I am still getting a value of zero when I set a breakpoint and look at the value of SystemObjectRecordId in the codebehind of my control:
I'm using SqlDataSource to update image stored in the database. Everything is working fine using the code below but I don't know how to access the Property Name to get the content type of the image. How can I have the pass the File upload's content type to the parameter @imgType?
I am facing challenge of changing action attribute of html form tag. As my application is on shared hosting (medium trust) environment of godaddy server, I cannot use reflection to get control adapter of html tag page. So, I cannot use the following code in my Url Rewriting module.
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Is there any otherway to implement the same functionality without reflection?
I have a web user control that contains 2 text boxes. i would like to be able to have their values persisted using the personalizable attribute, but dont want to use my user control as a web part. Can i implement the personalizable attribute on a text box in a user control without using web parts?
