I have a #Html.DropDownList in the View. I like to default the value of what is select.
Note that #Html.DropDownList accepts a list. Not sure if there is a parameter to set it to a default value that is in the list.
If you want to pre select a value that is already in your list, then you need to set Selected = true on the SelectListItem.
There is also an option to pass an "option label" into the Html.DropDownList method but this is for rendering something like "Please choose a value from the list".
I believe something along these lines should work for you:
#Html.DropDownList("HtmlHelper", SelectList, new { #Value = valueToSelect });
Edit:
This should work for you:
#Html.DropDownList("Crd", (SelectList)ViewBag.CrdinatorSelectList, new { #Value = "James Brick" })
If you are wanting to get the Value from your ViewBag or ViewData you can try the following:
#Html.DropDownList("Crd", (SelectList)ViewBag.CrdinatorSelectList, new { #Value = ViewBag.Property })
#Html.DropDownList("Crd", (SelectList)ViewBag.CrdinatorSelectList, new { #Value = ViewData["Property"] })
Related
I can't figure out how to determine which item is selected in the my kendo dropdownlist. My view defines it's model as:
#model KendoApp.Models.SelectorViewModel
The ViewModel is defined as:
public class SelectorViewModel
{
//I want to set this to the selected item in the view
//And use it to set the initial item in the DropDownList
public int EncSelected { get; set; }
//contains the list if items for the DropDownList
//SelectionTypes contains an ID and Description
public IEnumerable<SelectionTypes> ENCTypes
}
and in My view I have:
#(Html.Kendo().DropDownList()
.Name("EncounterTypes")
.DataTextField("Description")
.DataValueField("ID")
.BindTo(Model.ENCTypes)
.SelectedIndex(Model.EncSelected)
)
This DropDownList contains the values I expect but I need to pass the selected value back to my controller when the user clicks the submit button. Everything works fine except I don't have access to which item was selected from the controller's [HttpPost] action. So, how do i assign the DropDownList's value to a hidden form field so it will be available to the controller?
For anyone who found this wondering how to get the selected value in JavaScript, this is the correct answer:
$("#EncounterTypes").data("kendoDropDownList").value();
From the documentation: http://docs.telerik.com/kendo-ui/api/javascript/ui/dropdownlist#methods-value
when select a value from a dropdown list, and in the selec event , we can get the selected value as following ,
#(Html.Kendo().DropDownList()
.Name("booksDropDown")
.HtmlAttributes(new { style = "width:37%" })
.DataTextField("BookName")
.DataValueField("BookId")
.Events(x => x.Select("onSelectBookValue"))
.DataSource(datasource => datasource.Read(action => action.Action("ReadBookDropDow", "PlanningBook").Type(HttpVerbs.Get)))
.OptionLabel("Select"))
javascript function like following ,
function onSelectBookValue(e) {
var dataItem = this.dataItem(e.item.index());
var bookId = dataItem.BookId;
//other user code
}
I believe this will help someone
Thanks
Hello I was just going through this problem,kept on searching for 2 hours and came up with a solution of my own.
So here is the line to fetch any data bidden to the kendo drop down.
$("#customers").data("kendoDropDownList").dataSource._data[$("#customers").data("kendoDropDownList").selectedIndex].colour;
Just change the id customers to the id you have given tot he kendo drop down.
Maybe you should be using the DropDownListFor construct of the Kendo DropDownList like so in your view:
#(Html.Kendo().DropDownListFor(m => m.EncSelected)
.Name("EncounterTypes")
.DataTextField("Description")
.DataValueField("ID")
.BindTo(Model.ENCTypes)
.SelectedIndex(Model.EncSelected)
)
This way, when you submit, it will be availble on the POST request and you won't need to put an hidden field anywhere.
BUT should you need to use the hidden field for some reason, put it there, subscribe the the select event of the dropdown list and put using JQuery (for instance) put the selected item on the hidden field.
It's your choice :)
If you want to read also out the text of the dropdown, you can get or set the value by using the following kendo function:
$('#EncounterTypes').data("kendoDropDownList").text();
REFERENCE TO THE DOCUMENTATION
Using this .val() as #Vivek Parekh mentions will not work - there is no function .val() in the kendo framework.
If you want you could use jQuery and get the value back: $('#EncounterTypes').val()
Updated DEMO
$("#EncounterTypes").kendoDropDownList().val();
You can get the selected item like following code and then use item.property to get further information
var selectedFooType = $("#fooType").data("kendoDropDownList").dataItem();
selectedFooType.name
//OR
selectedFooType.id
In Edit view:
I am passing ViewBag list for the ddl
Controller:
ViewBag.CountryList = new SelectList(db.Country, "CountryCode", "Desc");
in edit view:
How do I assign the viewbag to the ddl and set the value that is coming from the model
#Html.EditorFor(model => model.CountryCode) <- contains the Desc Value, currently just shows in a textbox!
thx!
use #Html.DropDownListFor. If you read the parameters that C# specifies you need, its self explanitory. The fact you have the selectList in the viewbag already means you've nearly done it all yourself already.
#Html.DropDownListFor(model => model.CountryCode, ViewBag.CountryList);
If that doesnt set the correct value for any reason, you can also use
#Html.DropDownList("CountryCode", ViewBag.CountryList, new { #value = #Model.CountryCode });
So if Set up a DropDownList where Text: "people names" (string)and Value:studentID (int). in my view like this (assuming myDDL is data from code-behind placed in the viewbag)
#Html.DropDownList("myDDL", (IEnumerable<SelectListItem>)ViewBag.myDDL,
"Select Stuff", new Dictionary<string,object>{
{"class","dropdowns"},{"id","myDDL"}})
What is the value of "Select Stuff" which is an optional label that appears at the beginning of the dropdown list?
I'd like the value because it if no value is selected then I'd like to get all the data.
Thanks!
It's empty and it's always the first option of the dropdown, so make sure that you are binding it to a non-nullable property in the postback action:
<select name="selectedValue">
<option value="">Select Stuff</option>
...
</select>
Also you seem to be using myDDL as both the first argument and the second of the dropdownlist helper which is wrong. The first argument is a property that would be used to get the selected value. The second is the available values and must be an IEnumerable<SelectListItem>.
So something like this would make more sense:
#Html.DropDownList(
"selctedValue",
(IEnumerable<SelectListItem>)ViewBag.myDDL,
"Select Stuff",
new { #class = "dropdowns", id = "myDDL" }
)
But what would really make sense and what I would recommend you is to get rid of this ViewBag and use a view model and the strongly typed version of this helper:
#model MyViewModel
...
#Html.DropDownListFor(
x => x.SelectedValue,
Model.MyDdlItems,
"Select Stuff",
new { #class = "dropdowns", id = "myDDL" }
)
It's the empty string. The documentation covers this (emphasis mine):
optionLabel
Type: System.String
The text for a default empty item.
This parameter can be null.
You can actually try adding a fake value into your List of object inside of your dropdown list which take inn value = "None"/"select stuff" and id = 0. In which it will help you to generate a fake value where user is able to select on the value in the dropdown list and you should be able to handle it on the backend code. Hope this helps.
I have following code
#using (Html.BeginForm())
{
#Html.DropDownListFor(m => m.IDs, new SelectList(Model. IDs), Model.SelectedID)
}
So user selection from this combo bind to SelectedID property of the model. My understanding is that this binding happen only when form is submitted. Let’s say from the same page, I need to do an AJAX call but at this point ) Model.SelectedID does not provide any value because form hasn’t been submitted yet (although user has selected something from drop down). Any ideas how to best deal with this situation?
You can use javascript.
var selectedValue = $("#IDs").val();
bind a change event to your DD
$("#DDL_ID").change(function(){
var currVal = $(this).val();
//do ajax
});
As others have pointed you would get this value with javascript on the change of the drop down list.
I wanted to point out however, that your understanding of the overload you are using for the drop down list is incorrect. This overload will display a default option box label.
For example you could prompt the users to select select something from the list:
#Html.DropDownListFor(m => m.IDs, new SelectList(Model. IDs), "Select Something...")
If you were to post the form in your example as is, you can see the selected item come across in the form. If your view model is setup in such a fashion the model binder would take over and bind this value to your "SelectedID" property.
[HttpPost]
public string DropDown(FormCollection form)
{
var selectedItem = form["IDs"];
return selectedItem;
}
I have an html.TextArea helper that I'd like to set a default.
#Html.TextAreaFor(model => model.CompletionCriteria,
new { rows = 5, cols = 70, #class = "celltext2",
#Value = ViewBag.CompletionCriteria,
#Text = ViewBag.CompletionCriteria })
The controller is setting the ViewBag.CompletionCriteria variable by querying the DBContext to get the default vaule for this given TextArea. The TextArea Value and Text properties are being set correctly, so the ViewBag is good, however the data doesn't display in the TextArea. I'm sure I'm just missing a property setting. Any ideas?
Remove the #Value and #Text attributes. It will automatically populate it, assuming it's set correctly and you're not using a strongly typed model. make sure it's spelled correctly in both your View and Controller.
In controller
Phone = model.UserPhoneNumber
In HTML
#Html.TextBoxFor(m => m.MobilePhone, new { #class = "form-control", #Value =Viewbag.UserPhoneNumber, data_mask = "phone" })
For Custom Attributes you can use like data_mask sample
it will render like data-mask ="phone"