ViewModel data being passed in address bar - asp.net-mvc

Question

I have my change password controler.
The user changes the password and clicks submit.
I have my viewmodel of person p.
I am not passing it at all to my success page.
return View("succsessFulLogin");
And still I am getting
http://localhost:50010/Password/ChangePassword?AccountName=username&CurrentPassword=currentPassValue&NewPassword=newPassValue&NewPasswordCheck=newCheckPassValue
In the address bar
this is my code on the page:
#using (Html.BeginForm("ChangePassword", "Password", FormMethod.Get))
{
#Html.HiddenFor(model => model.AccountName)
<br />
<div>
<h4>#Html.LabelFor(m => m.CurrentPassword)</h4> #Html.PasswordFor(m => m.CurrentPassword, new { onkeydown = "capLock(event);" } ) #Html.ValidationMessageFor(m => m.CurrentPassword)
</div>
<br />
<div>
<h4>#Html.LabelFor(m => m.NewPassword)</h4> #Html.PasswordFor(m => m.NewPassword, new { onkeydown = "capLock(event);" }) #Html.ValidationMessageFor(m => m.NewPassword)
</div>
<br />
<div>
<h4>#Html.LabelFor(m => m.NewPasswordCheck)</h4> #Html.PasswordFor(m => m.NewPasswordCheck, new { onkeydown = "capLock(event);" }) #Html.ValidationMessageFor(m => m.NewPasswordCheck)
</div>
<br />
<p>
<button class="btn-lg" type="submit">#Global.SAVE</button>
</p>
}

Answer 1

I disagree with osman Rahimi.
Using HTTP POST is in no way more secure than HTTP GET! As long as you're passing everything as clear text over http, you can read anything passed to and from the server, even if it isn't shown in the address bar. If you want to check me yourself, all you have to do is download fiddler, check the request and responses your page generates and see for yourself.
The proper way to transmit passwords on the net is to make sure you're using SSL and hashing the passwords. I am by no means an expert on the subject, but I think you'll find need in these answers:
Securely Transfer User Entered Password
How should password be transfered for logon in Asp.net Identity
How to securely save and send login username/password?

Answer 2

when you are using HTTP GET the browser send data in URl and in this way you have limitation up to 2048 characters.
know more about HTTPGET and HTTPPOST
to keep your data secure and protected change your method To POST Like this :
#using (Html.BeginForm("ChangePassword", "Password" FormMethod.Post, null))
{}
then Add [HTTpPost] to your Action Method in your controller , like :
[HttpPost]
public ActionResult ChangePassword(yourmodel model){}