Question

There are all kinds of posts out there about getting the input fields off a form/div and sending them to your server side controller. What I am not clear on is how to accept the input at the controller.

I have tried various methods:

function SendEMail( vThis )
{
    var vInput = $("#idEMailFields *").serializeArray();

    $.ajax({
        url: '@Url.Action( "SendEMail", "TournMaint")',
        data: JSON.stringify(vInput),
        type: 'POST',
        contentType: 'application/json; charset=utf-8;',
        dataType: 'json',
        success: function (response)
        {
            $("#idEMailResponse").html(response);
            return;
        },
        error: function( xhr, status, error )
        {
            debugger;
            var verr = xhr.status + "\r\n" + status + "\r\n" + error; 
            alert( verr );
        }   
    });
}

where the controller looks like:

[HttpPost]
public JsonResult SendEMail( CNameValue [] inputs )
{
    String sView = "EMail messages queued"; 
    return Json( sView, JsonRequestBehavior.AllowGet );
}

The CNameValue class is my own creation since I didn’t find a standard that would do the same thing. There should be a standard dictionary class that would pick the parameters up by name?? My question is how should this be done??

The Second variation:

function SendEMail( vThis )
{
    var params = {};
    var v1 = $("#idEMailFields input[name=EMailAddressing], #idEMailFields input[type=hidden],#idEMailFields textarea");
    $(v1).each( function(index)
    {
        params[this.name]=this.value;
    });
    $.ajax({
        url: '@Url.Action( "SendEMail", "TournMaint")',
        data: JSON.stringify(params),
        type: 'POST',
        contentType: 'application/json; charset=utf-8;',
        dataType: 'json',
        success: function (response)
        {
            debugger;
            return;
        },
        error: function (x)
        {
            debugger;
            alert(x.status);
        }   
    });
}

Where the controller looks like:

[HttpPost]
public JsonResult SendEMail( Int32 TournamentId, String EMailText, String EMailAddressing )
{
    String sView = "return something usefull";
    return Json( sView, JsonRequestBehavior.AllowGet );
}

This is not a bad way to move data to the sever but it is susceptible to changes in the razor markup causing the controller to blow. I know that you never get away from that problem but reducing the possibility is a thought.

What is the best way to get screen data to the server side controller?

Answer 1

if you are using strongly typed views then all you have to do is

 $.ajax({
        url: '@Url.Action( "SendEMail", "TournMaint")',
        data: {model:JSON.stringify(vInput)},
        type: 'POST',
   ...

and the controller looks like

[HttpPost]
public JsonResult SendEMail( CNameValue model )
{
    String prop = model.YourModelProperty; 

also you can use the form collection

 $.ajax({
        url: '@Url.Action( "SendEMail", "TournMaint")',
        data: {col :$("Formid").serialize()},
        type: 'POST',
   ...

and the controller looks like

[HttpPost]
public JsonResult SendEMail( FormCollection col )
{
    String prop = col.Get("FormFieldName");