Saturday, 28 December 2013

Various ways to get the values from the form post to the controller action - ASP.MVC

In this article we are going to see the various ways of accessing a values from the view form post in the
action.

HTML :
@model TestingMvc.Models.Employee
@{
    ViewBag.Title = "Create Employee";
}
<h2>
    Create Employee</h2>
   
@using (Html.BeginForm())
{
    @Html.ValidationSummary(true)
    <fieldset style="width:300px">
        <legend>Employee</legend>
        <br />
        <div class="editor-label">
            @Html.LabelFor(m => m.EmployeeName)
        </div>
        <div class="editor-field">
            @Html.EditorFor(m => m.EmployeeName)
            @Html.ValidationMessageFor(m=>m.EmployeeName)
        </div>
        <div class="editor-label">
            @Html.LabelFor(x => x.Country)
        </div>
        <div class="editor-field">
            @Html.EditorFor(x => x.Country)
            @Html.ValidationMessageFor(x=>x.Country)
        </div>
        <div class="editor-label">
            @Html.LabelFor(x => x.DepartmentId, "Department")
        </div>
        <div class="editor-field">
            @Html.DropDownList("Departments", new List<SelectListItem>(){
    new SelectListItem(){Text="TECH",Value="1"},
    new SelectListItem(){Text="HR",Value="2"},
    new SelectListItem(){Text="Finance",Value="3"}
    }, "Select Department")
    @Html.ValidationMessageFor(x=>x.DepartmentId)
        </div>
        <div class="editor-label">
            @Html.LabelFor(x=>x.Married)
        </div>
        <div class="editor-field">
            @Html.DropDownList("Married",new List<SelectListItem>(){
   new SelectListItem(){Text="Yes",Value="YES"},
   new SelectListItem(){Text="No",Value="NO"}  
   })
   @Html.ValidationMessageFor(x=>x.Married)
        </div>
        <br />
        <input type="submit" value="Create" />
    </fieldset>
}

<br />
@Html.ActionLink("Back to List","Index","Department")

FormCollection:
 From this FormCollection developer can get the all controls values present with in the form while post.Values are stored as key/values pairs

        [HttpPost]
        public ActionResult Create(FormCollection form)
        {       
            BusLayer bl = new BusLayer();
            bl.Create(form["EmployeeName"], form["Country"], form["Married"], int.Parse(form["Departments"]));
            return RedirectToAction("Details", new { id=int.Parse(form["Departments"])});           
        }

  
Parameter:
     From This method all the elements are mention as parameter with the same name as the control name to the input for action then it is default mapped the values to that variable, parameters can be in any order.

        [HttpPost]
        public ActionResult Create(string employeename,string country,string married,int departments)
        {       
            BusLayer bl = new BusLayer();
            bl.Create(employeename,country,married,departments);
            return RedirectToAction("Details", new { id=departments});           
        }



Output:



From this article you can learn the various ways of access a values from the request posted from the client.

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