How to populate a textbox based on dropdown selection in MVC..?

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Hi I have created a table and connected it to MVC project through ADO.NET entity.
After connecting I added the controller for the entity and it creates a set of cshtml files in VIEW folder in MVC project.
But now What I need is to create a dropdownlist and textbox.
I created the dropdownlist in a cshtml file and also wriiten the logic for it in the CONTROLLER.
I can also create TEXTBOXES,but i'm facing the problem of poulating TEXTBOX based on the dropdownlist selection.

My Model auto generated by VS 2012 is

C#

public partial class Plan_S

   {

       public int PlanId_PK { get; set; }
       public string PlanNames { get; set; }
       public string Hours { get; set; }
   }

My Controller for displaying dropdownlist is
`

C#

public class dropdownController : Controller
   {


       private PivotEntities db = new PivotEntities();

       //
       // GET: /dropdown/

       public ActionResult Index()
       {
           ViewBag.plannames = new SelectList(db.Plan_S, "PlanId_PK", "PlanNames");

           return View();
       }

       protected override void Dispose(bool disposing)
       {
           db.Dispose();
           base.Dispose(disposing);
       }
       public ActionResult ddl()
       {
           return View(new Plan_S());
       }

   }`

My view.cshtml for displaying dropdownlist is

`

Razor

@model Pivot.Models.Plan_S
@{
    ViewBag.Title = "Index";
}

<h2>Index</h2>


<div>

    @Html.DropDownList("PlanNames", "--select--")

</div>

`

Now When I select an item in the dropdownlist, it should automatically populate the corresponding value in the table.
Here in my code, Plan_S table is autogenrated as Plan_S MODEL Class. But in Database I have set of values for these columns in table.

eg..) PlanId_PK | PlanNames | Hours
1 Plan1 1hrs
2 Plan2 2hrs
3 Plan3 3hrs

Here in this Plan_S table,

PlanNames column is populated in the DROPDOWNLIST,
When I select the Plan1 in DDL it should populate the texbox as 1hrs

When I select the Plan2 in DDL it should populate the textbox as 2hrs.

This is the logic i need and I can do this in asp webforms but it is tricky in MVC.

I think that Jquery is needed for it.......

Please help me, I had spent hours in finding this logic....

Thanks in advance...

C#

<pre lang="c#">

Posted 29-May-13 3:04am

Rajesh_DotNet

Updated 30-May-16 1:52am

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Rajesh_DotNet · Accepted Answer · 2013-05-31T01:07:00

Thanks Jameel Moideen..:)

I used the below script for filling the corresponding textboxes in my code....
Also I did Editing the textboxes and saving it to the database..

C#

$("#editbutton").click(function () {
            $("#ddl").hide();
            $(".editplanfield").show();
            $("#editlabel").show();
            $("#plannames").show();
            $("#deletefield").show();
            // Request plan of selected id from server
            $.getJSON('@Url.Action("GetPlan")', {planId: $("[name='PlanNames']").val() }, function (plan) {
            // Fill the fields according to the Jsondata we requested
            $("#planid").val(plan["PlanId_PK"]);
            $("#plannames").val(plan["PlanNames"]);
            $("#planHours").val(plan["Hours"]);
            //$("#plancost").val(plan["PlanCost"]);
        });
        });


        $("#savebutton").click(function () {
            
            // Parse the plan from fields
            var plan = new Object();
            
            plan.PlanId_PK = $("#planid").val();
            plan.PlanNames = $("#plannames").val();
            plan.Hours = $("#planHours").val();
           
            //plan.PlanCost = $("#plancost").val()
            // Post it to server
            $.ajax({
                type: "POST", url: "@Url.Action("UpdatePlan")",
            success: function (result) {
                //Postback success
                $(".editplanfield").hide();
                $("#ddl").show();
            },
            data: plan,
            accept: 'application/json'
        });
        });

Now I need is i have added a delete button and when i click this the selected DDL item and corresponding textbox values in the database should be deleted....Please advise on that issue...Thanks in advance...:)

Jameel VM · Accepted Answer · 2013-05-29T05:34:00

//You can do it by Sending an Ajax Request by using jQuery when dropdown change

JavaScript

jQuery(document).ready(function(){
  $("#YourDropDownId").change(function() {
     var ServiceUrl ="/YourController/Action?id=" + id;
                var content = '';
                $.support.cors = true;
                $.ajax({
                    type: 'GET',
                    url: ServiceUrl,
                    async: true,
                    cache: false,
                    crossDomain: true,
                    contentType: "application/json; charset=utf-8",
                    dataType: 'json',
                    error: function (xhr, err) {
                    },
                    success: function (result, status) {
                      $('#yourTextId').val(result.Value);
                    }
                });
  });
});

//Your Action Result

C#

[HttpGet]
        public ActionResult Action(int id)
        {
          
//do the logic for taking the value for textbox
                var result = new { Value = textboxValue };
                return Json(result, JsonRequestBehavior.AllowGet);
            }

Hope this helps

How to populate a textbox based on dropdown selection in MVC..?

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