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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 to null.
My markup:
@{
ViewBag.Title = "TestForm";
}
<h2>TestForm</h2>
@using (Html.BeginForm()) {
<input type="text" id="testinput" />
<input type="submit" value="TestForm" />
}
My controller:
public ActionResult TestForm()
{
return View();
}
[HttpPost]
public ActionResult TestForm(string testinput)
{
Response.Write("[" + testinput + "]");
return View();
}
I put the breakpoint inside the second TestForm method and testinput is null.... Am I missing something?
Note: I realize that most of the time I will be using the model to pass data around, but I would like to know that I can pass strings as well.
As part of the same question, how do I pass several variables? Would the method in my controller look like this:
[HttpPost]
public ActionResult TestForm(string var1, var2)
{
}
930
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" />
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:
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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