Change Contents Of SelectList?
Jan 14, 2011Is there a way to remove items from a SelectList?
View 1 RepliesIs there a way to remove items from a SelectList?
View 1 Replieswhy SelectList dont have a default constructor new SelectList()
View 1 RepliesI have two frames side-by-side in a .aspx webpage.The frame on the feft is set a source page called
category.aspx and the one on the left is set to data.aspx.Now,category.aspx has saome buttons and data.aspx has a datalist control to show data from a database table. What I want is that when the user clicks different buttons on the category.aspx frame ,the data in the data.aspx frame change due corresponding changes in sql query of the datalist in the right-hand frame.
This is a very simple complexive query that I have.I need the solution.I have a youtube link:
<----- width="480" height="350"><---- src="http://www.youtube.com/v/OORDOd6wRrE&hl=en_US&fs=1" type="application/x-shockwave-flash" allowscriptaccess="always" allowfullscreen="true" width="480" height="350"><---><----->
this is the modified link.Well,my problem is,that I want to change the size of video, means in the whole string I want to replace width="480" with width="250" and height="350" with height="250"
I want to change these parameters programmatically using ASP.Net
I am using AppCode and have 6 arrays of information I want to display on my web page. However I only want three to be visible at any one time.
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button button button
i.e. a table like the above.
I have created the layout and the choice buttons etc I am using querystrings to pass the changes to the webpage.
The problem comes however when trying to write the code for the table diplay. Now each has a slightly different layout.
My initial thought was to write a function within the aspx/html page for each table, then in each column of the master table one of the functions can be called to populate it. Each of the functions will contain the HTML tagging for that information. However I dont seem to be able to achieve this as when I try to right a sub or function it doesn't like it. I have also tried to write the functions into the code behing but again this didnt work.
I don't know much about the .Net environment, so my first idea was to just write a console app that scans the folder for new content, and then emails alerts out. Then put the .exe as a scheduled task on the server, executing every few minutes. This seems pretty archaic to me though. Is there a more elegant way to do this for my website?
View 3 Repliesi want to change contents in content place holder based on the user logged in or logged out
View 1 RepliesI'm failing at getting the selected item on a mvc dropdown list. I can't stand viewdata, and every example uses it. Here is my code,
//controller
public ActionResult Register(Models.Person APerson)
{
}
public class Person
{
public Person().............
I have a pdf file, how can I extract the contents of the pdf file and show the contents in one of my web page
View 4 RepliesI have an AJAX Modal Popup panel that contains a RadioButtonList, 2 labels and 2 DropDowns. I want to update the Labels and DropDowns when a radio button is selected. My attempt at this posts back which causes the ajax popup to disappear.
aspx called on image click:
<asp:Panel ID="pnlModalContainer" runat="server">
<asp:RadioButtonList ID="rblTest" runat="server" RepeatDirection="Horizontal" OnSelectedIndexChanged="rblTest_SelectedIndexChanged">
[code]...
I followed MVC 2 source to create a CheckBoxList helper.
I was able to identify the problem I am having but not able to solve it.
On my view I have the following:
[Code]....
The problem is in the bold part ...
The newSelectList is equal to selectList but all items were deselected.
What am I missing?
how can i disable first value in the select list when the checkbox is clicked
View 2 Repliesi have wrote the following code inside a model class, but there was an error that indicates that the select list could not be found:-
public SelectList Countries {
get;
private
set; }
so which "using system" i should add????
I'm working on a MVC3 web application. I want a list of categories shown when editing a blo from whe applications managements system. In my viewmodel i've got the following property defined for a list of selectlistitems for categories.
/// <summary>
/// The List of categories
/// </summary>
[Display(Name = "Categorie")]
public IEnumerable<SelectListItem> Categories { get; set; }
The next step, my controller contains the following edit action where the list of selectlistitems is filled from the database.
public ActionResult Edit(Guid id)
{
var blogToEdit = _blogService.First(x => x.Id.Equals(id));
var listOfCategories = _categorieService.GetAll();
var selectList = listOfCategories.Select(x =>new SelectListItem{Text = x.Name, Value = x.Id.ToString(), Selected = x.Id.Equals(blogToEdit.Category.Id)}).ToList();
selectList.Insert(0, new SelectListItem{Text = Messages.SelectAnItem, Value = Messages.SelectAnItem});
var viewModel = new BlogModel
{
BlogId = blogToEdit.Id,
Active = blogToEdit.Actief,
Content = blogToEdit.Text,
Title = blogToEdit.Titel,
Categories = selectList //at this point i see the expected item being selected
//Categories = new IEnumerable<SelectListItem>(listOfCategories, "Id", "Naam", blogToEdit.CategorieId)
};
return View(viewModel);
}
When i set a breakpoint just before the view is being returned, i see that the selectlist is filled as i expected. So at this point everything seems to be okay. The viewmodel is filled entirely correct.
Then in my view (i'm using Razor) i've got the following two rules which are supposed to render the selectlist for me.
@Html.LabelFor(m => m.Categories) @Html.DropDownListFor(model=>model.Categories, Model.Categories, Model.CategoryId)
@Html.ValidationMessageFor(m => m.Categories)
When I run the code and open the view to edit my blog, I can see all the correct data. Also the selectlist is rendered correctly, but the item i want to be selected lost it's selection. How can this be? Until the point the viewmodel is being returned with the view everything is okay. But when i view the webpage in the browser, the selectlist is there only with out the correct selection. What am I missing here? Or doing wrong?
I cannot get my code to work with the usual workarounds. I have a model which exposes a SelectList and a value for the selected item in it. The list is built like: new SelectList(persons, "Id", "Name");
where persons is an array of type Person with a *string* property named Id and a string property named Name. My model has a SelectList property returning a list built as shown, and a SelectedPersonId *string* property which should be updated by the dropdown. Here's my view code:
Html.DropDownListFor(m => m.SelectedPersonId, Model.PersonList)
I can see the persons in the dropdown and select one item, but the model's SelectedPersonId property never gets updated (I get a null). Of the two workarounds I found googling around, one stated to build the SelectList in the model, using the constructor shown above; another recommended to ensure that the selected value is a string. I did both, but still it does not work.
I had been building my SelectLists in the View, but I found examples doing it in code that I liked better. Now I'm creating one of my SelectLists like this:
[Code]....
And all is good, but I'm not sure how to do two things. First, I'd like to add an initial SelectListItem that prompts the user to select a value. When instantiating the SelectList in a loop this is easy, but I was hoping to keep this approach. The second problem is setting the default selected item. In the constructor it shows the 4th parameter to be used for this purpose, but I'm not certain how to do it. There's a property of this object named "DefaultView". It's a boolean, and I'd like that to determine the selected state. Is this possible?
I'm attempting to change my select statement when a selection of "Other" is detected. The problem is that the select that executes on the page is always the original selection from the datasource definition. I've found an example where the "SelectCommand" value is changed in the code behind, but it is for a case where the dropdownlist is not in a template. I'm thinking that I have to bind to the template, but I'm not getting it to work. (see the last couple of lines in the Page_Load code)
asp code:
<div>
<asp:DetailsView AutoGenerateRows="False" DataKeyNames="EmployeeTimeId" DataSourceID="sdsEmpTimeDetailsView"
DefaultMode="Insert" HeaderText="Add EmployeeTime"
runat="server"
AutoGenerateInsertButton="True"
[Code]....
i want to get the contents of a textbox and set them to a asp label for output, we can cause a postback to if that makes it easier, so far i did this and it comes up trumps
View 11 RepliesI have written an Enum extension method that allows me to create a view model and allows me to easily bind a generic Enum to a SelctList like:this.ProductStatusList = new ProductStatusTypes().BindToSelectList<ProductStatusTypes>
(product.Status.ToString());
In my View I can then have:
<% using (Html.BeginForm()) {%>
<fieldset> [code]...
Notice I am using EditorForModel and then a seperate DropDownList. My question is: Is there a way to get the EditorForModel to be clever enough to pick up that I want to use a SelectList instead of a TextBox for status?
I'm trying to display a dropdown on my view page that has a custom text value.
I'm trying to display a list a Contacts. A Contact contains a ContactID, FirstName, and LastName.
<%= Html.DropDownListFor(m => m.ContactId, new SelectList(Model.Contacts, "ContactID", "LastName"), "- Select a Contact -") %>
Right now I'm just displaying the last name, but I'd like to display the first name and last name in the dropdown.
I'm having problems retrieving the values of a selectlist in my form collection. I've tried making a viewmodel with an attribute with the same name as the select list.
I'm honestly just realizing I REALLY don't understand how model binding works with selectlists. I've just been assuming that the following conventions apply:
Name the select list the same thing as the attribute on the model you want it to bind to. Apart from that, I really don't get it. I've looked at several books on it and they're useless frankly. How does a select list work with a) form collection and b) a particular model?
What do I use to set the dataValueField of the Select List when I'm using a list of strings. I want to be able to set the value of the option in the select. If i have:
List<string> list = new List<string>();
list.Add("apple");
list.Add("orange");
and I want my html to be:
<select>
<option value="apple">apple</option>
<option value="orange">orange</option>
</select>
I can currently populate and display a Drop Down using the following model annotations, viewmodel, and custom Editor template - but am having problems persisting the submission (more on that below):
//Domain
Public class Person
{
public string FirstName {get;set;}
public string LastName {get;set;}
public string ClassName {get;set;}
public int ClassId {get;set;}
...
}
//ViewModel
Public class PersonViewModel
{
public Person Person {get;set;}
Like I mentioned, the above works fine - as in the drop down is displayed properly, but obviously in its current state it's not saving the classID (or name) to the Person entity, I understand the problem but not sure how to fix it.
My questions:
How can I save the selected value from the drop down to the Person entity
How can I save both the ID and the Name into the Person entity - I'm guessing only way is a hidden field that gets populated with an onchange event (this sounds weird, I'm sure, but it's being stored in a document DB, so it's not normalized - I may just store Name in the end)
I have my class RoomType:
Int32 Id
String Name
String ColorCode
My viewmodel gets a List<Roomtype> RoomTypes which should be displayed in a dropdown.
Each dropdown option item should have: 1) as title the Name, 2) as value the Id, and 3) the style background-color #ColorCode.
My problems are how to convert this list correctly into a List<SelectListItem> as required by ASP.NET MVC's DropDownFor helper, and then to have the correct values inserted for each option.
I've tried to have a new readonly property in my viewmodel, which has a getter RoomtypeSelectList which returns new SelectList(RoomTypeList) but I can't get the correct properties to show (Name, Id, Background color).
I have a page "work" with 2 div:
<div id="intro"></div>
<div id="images"></div>
Now I have lot of introductions and images and I would like to store these in different pages and when on the menu I click on specific link it load in the same page the contents of the relative page, Introduction into id#intro and images into id#images. I don't know how to do that.