Passing variables with POST in ASP.NET MVC

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刺人心
刺人心 2021-02-14 20:11

I am trying to pass a string variable inside asp.net MVC. I use breakpoints so I see that it does go to the correct method in the controller, but the variables posted are equal

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  • 2021-02-14 20:22

    For me it looks like that you set the id not the name. I use MVC3 every day, so i dont reproduce your sample. (I am awake for 20 hours programming ;) but still motivated to help ) Please tell me if it dont work. But for me it looks like you have to set the "name" property ... not the id property. Try that ... i am waiting right now to help you if it does not work.

         <input type="text" id="testinput" name="testinput" />
    
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  • 2021-02-14 20:24

    On a slightly separate note there is nothing wrong with passing variables like you are, but a more efficient way would be to pass around a strongly typed view model allowing you to take advantage of many aspects of MVC's goodness:

    • strongly-typed views
    • MVC Model Binding
    • Html Helpers

    Create a new view model:

    public class TestModel
    {
        public string TestInput { get; set; }
    }
    

    Your test controller:

        [HttpGet]
        public ActionResult TestForm()
        {
            return View();
        }
    
        [HttpPost]
        public ActionResult TestForm(FormCollection collection)
        {
            var model = new TestModel();
            TryUpdateModel(model, collection);
    
            Response.Write("[" + model.TestInput + "]");
    
            return View();
        }
    

    Your view:

    @model <yourproject>.Models.TestModel
    
    @{
        Layout = null;
    }
    
    <!DOCTYPE html>
    
    <html>
    <head>
        <title>TestForm</title>
    </head>
    <body>
        <div>
            @using(Html.BeginForm())
            {
                <div class="editor-label">
                    @Html.LabelFor(m => m.TestInput)
                </div>
                <div class="editor-label">
                    @Html.TextBoxFor(m => m.TestInput)
                </div>
                <input type="submit" value="Test Form"/>
            }
        </div>
    </body>
    </html>
    
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