在MVC 3中保持状态

Question

I am simply devloping entry form using mvc 3. I have many text boxes,radio button, lables. so while post back data from view to controller it loses entered data. how to retain this for all postbacks? is there any mvc mechanisam avialable by default? which means by enabling some properties do we command mvc to handle state by itself?

i am not interested to send viewdata object to view. except that what is default mechanism availble in mvc3?

Update:

@using (Html.BeginForm())
{
<table>
    <tr>
        <td>

            @Html.TextBox("txtTitle")
@Html.CheckBox("chkOption")
        </td>
        <td>               
            @Html.TextBox("txtDetails")
@Html.DropDownList("drpList")
        </td>
        <td>
            <input type="submit" value="Cancel" name="action" />
            <input type="submit" value="Create" name="action" />

        </td>
    </tr>
</table>
}

How to maintain state for entered and selected value for all post backs?

Answer 1

您可以使用会话在多个回发之间保持状态。

Answer 2

It looks like you need to create a Model and use the @Html.TextBoxFor() , @Html.CheckBoxFor() and @Html.DropdownListFor() methods instead, on the properties of your model.

You would then have a similarly named action method, decorated with a [HttpPost] attribute and the model as a parameter. You will then be able to perform validation on attempted form submissions and process the model if the form state is valid.

I'd look into researching strongly typed views, models and maybe go through a few online tutorials.

The link included below seems a good tutorial, it's a few pages long, but should go through everything you need to get started.

http://www.asp.net/mvc/tutorials/getting-started-with-aspnet-mvc3/cs/intro-to-aspnet-mvc-3