<input type="submit" name="submitbutton1" value="submit1" />
 <input type="submit" name="submitbutton2" value="submit2" />

if( Request.Form["submitbutton1"] != null)
{
    // Code for function 1
}
else if(Request.Form["submitButton2"] != null )
{
       // code for function 2
}

<input id="btnFilterData" type="button" value="myBtn">

<script type="text/javascript">
$('#btnFilterData').click(function () {
        myFunc();
    }
});
</script>

function myFunc() {
    $.ajax({
        type: "GET",
        contentType: "application/json",
        url: "/myController/myFuncOnController",
        data: {
             //params, which you can pass to yu func
        },
        success: function(result) {

        error: function (errorData) {

        }
    });
};

<form action="/Controller_name/action" method="Post>

 <input type="submit" name="btn1" value="Ok" />
 <input type="submit" name="btn1" value="cancel" />
 <input type="submit" name="btn1" value="Save" />
</form>

string str =Request.Params["btn1"];
if(str=="ok"){


}
if(str=="cancel"){


}
if(str=="save"){


}

@using (Html.BeginForm("Action1", "Controller"))
  {
    <input type="submit" value="Button 1" />
  }

  @using (Html.BeginForm("Action2", "Controller"))
  {
    <input type="submit" value="Button 2" />
  }

@using (Html.BeginForm("DliAction", "Dli", FormMethod.Post, new { id = "mainForm" }))
{
    if (isOnDli)
    {
        <button name="removeDli" value="@result.WeNo">Remove From DLI</button>
    }
    else
    {
        <button name="performDli" value="@result.WeNo">Perform DLI</button>
    }
}

public ActionResult DliAction(string removeDli, string performDli)
    {
        if (string.IsNullOrEmpty(performDli))
        {
            ...
        }
        else if (string.IsNullOrEmpty(removeDli))
        {
            ...
        }

        return View();
    }

@using (Html.BeginForm("DliAction", "Dli", FormMethod.Post, new { id = "mainForm" }))
{

        <button name="weNo" value="@result.WeNo">Process This WeNo</button>

        <button name="weNo" value="@result.WeNo">Process A Different WeNo This Item</button>
}

public ActionResult DliAction(string weNo)
    {
        // Process the weNo...

        return View();
    }

@Html.Begin()
{
  // Html code here
  <input type="submit" name="command" value="submit1" />
  <input type="submit" name="command" value="submit2" />

}

public ActionResult Create(Employee model, string command)
{
    if(command.Equals("submit1"))
    {
      // Call action here...
    }
    else
    {
      // Call another action here...
    }
}

@{
  if (IsPost)
    {
       if(Request["btn"].Equals("button_A"))
        {
          Response.Redirect("PageA.cshtml");
        }
      if(Request["btn"].Equals("button_B"))
        {
          Response.Redirect("PageB.cshtml");
        }
  }
}
<form method="post">
   <input type="submit" value="button_A" name="btn"/>;
   <input type="submit" value="button_B" name="btn"/>;
</form>

@helper SubmitButton(string text, string cssClass, string controller,string action)
{
    var uh = new System.Web.Mvc.UrlHelper(Context.Request.RequestContext);
    string url = @uh.Action(action, controller, null);
    <div class='@cssClass' onclick="(
                                       function(e)
                                                 {
                                                   $(e).parent().attr('action', '@url'); //rewrite action url
                                                   //create a submit button to be clicked and removed, so that onsubmit is triggered
                                                   var form = document.getElementById($(e).parent().attr('id'));
                                                   var button = form.ownerDocument.createElement('input');
                                                   button.style.display = 'none';
                                                   button.type = 'submit';
                                                   form.appendChild(button).click();
                                                   form.removeChild(button);
                                                  }
                                      )(this)">@text</div>
}

div.Button {
   display: inline-block;
   cursor: pointer;
   /* Plus colors, padding etc*/
 }

 div.Button:active {
 //Just a simple effect to indicate pressing. You might make something different
    outline: 1px solid #6BA7B5;
 }

@Helpers.SubmitButton("Text for 1st button","Button","ControllerForButton1","ActionForButton1")
@Helpers.SubmitButton("Text for 2nd button","Button","ControllerForButton2","ActionForButton2")
...