asp.net core Razor pages @Html.DropDownListFor selected value as Input

Marius Vasile

5y1.2k.NET

How do I use the selected value from @Html.DropDownListFor for OnPost input value?

@Html.DropDownListFor(x => Model.HazardsListEdit.SelectedHazClassId,
new SelectList(Model.HazardsListEdit.HazardsClasses, "Value", "Text"),
htmlAttributes: new { @class = "form-control", id = "HazClass", @required = true })

for="HazId.HazClass" value=" " />

8 Replies

Know the answer? Post it — somebody with the same question will find it here.

Sachin Singh5y ago
Accepted answer
okk sir
+2
Marius Vasile5y ago
@ Jignesh. Thank you for your reply, I don't know MVC I only worked with Razor pages. Your answer might work on Controller in MVC but I don't know how to "translate" it to Razor
+2
Marius Vasile5y ago
Ok Sachin, I tried jquery like below
for="HazId.HazClass" id="hazClass" />
and
OnPost is writing null values in table. What else I am missing?
+2
Jignesh Kumar5y ago
Hi Marius,

You can use this way,
[HttpPost]
public ActionResult PostMEthod(HazardsListEdit HLE)
{
   string SelectedValue = MV.SelectedHazClassId;
   return View(HLE);
}
+1
Marius Vasile5y ago
I do get the dropdown working very well but I need the selected value as input for OnPost. Remember, I am using Razor pages, no MVC
+1
Sachin Singh5y ago
sir please elaborate your problem
are you getting selected value in your code behind , if yes then what do you want more?
Your question itsel is very unclear.
+1
Marius Vasile5y ago
Sachin, I asked a specific question and I am looking for a specific answer. If you can make it please do so, so far your reply does not answer my question
+1
Sachin Singh5y ago
I am giving a simple example , please try map with your problem
if you are using a form post then selected value will automatically bind with bindable property in page model
provided the property name (in my case :-Number) must be same to your dropdown name("Number")

in your case you need a bindable property SelectedHazClassId in page model.
"number">
    "">Select a number
    "1">One
    "2">Two
    "3">Three


public IndexModel : PageModel
{
    [BindProperty]
    public int Number { get; set; }
    public void OnPost()
    {
        // posted value is assigned to the Number property automatically
    }
}
+1