如果验证失败，防止表单提交

任何人都可以帮助发现我的代码出错的地方，即使表单字段无效，我也无法阻止表单提交，我一直在这一整天，并尝试了很多方法，但没有运气。如果验证失败，防止表单提交

[Display(Name = "Amount to convert")] 
    [Required(ErrorMessage = " is required")] 
    [RegularExpression("^[0-9]+$", ErrorMessage = " requires numbers only")] 
    [Range(1, int.MaxValue, ErrorMessage = " must be more than 1")] 





$(function() { 
     // $("#frmWeightsMeasures").validate(); 
     $("#frmWeightsMeasures").submit(function(event) { 
      // var isvalidate = $("#frmWeightsMeasures").valid(); 
      // if (isvalidate) { 
       event.preventDefault(); 
      // } 
      $.ajax({ 
       type: "POST", 
       cache: true, 
       url: form.attr("action"), 
       data: form.serialize(), 
       dataType: "json", 
       error: searchFailed, 
       success: function(weightsData) { 
        $("#DisplayConversion").html(weightsData.DisplayConversion); 
       } 
      }); 
     }); 
    }); 

    function searchFailed(xhr, errorType, exception) { 
     var errorMessage = exception || xhr.statusText; 
     $("#DisplayConversion").html("Sorry, there was a problem with the search."); 
    }

我已经添加下面的工作代码，希望这将帮助别人的未来，故事的摩托车，当修改您的代码，看你删除的内容。

$(function() { 
      $("#frmWeightsMeasures").validate(); 
      $("#frmWeightsMeasures").submit(function(event) { 
       var isvalidate = $("#frmWeightsMeasures").valid(); 
       if (isvalidate) { 
        event.preventDefault(); 
        var form = $(this); 
        $.ajax({ 
         type: "POST", 
         cache: true, 
         url: form.attr("action"), 
         data: form.serialize(), 
         dataType: "json", 
         error: searchFailed, 
         success: function(weightsData) { 
          $("#DisplayConversion").html(weightsData.DisplayConversion); 
         } 
        }); 
       } 
      }); 
     }); 

     function searchFailed(xhr, errorType, exception) { 
      var errorMessage = exception || xhr.statusText; 
      $("#DisplayConversion").html("Sorry, there was a problem with the search."); 
     }

来源

2013-07-04 CareerChange

提交如果删除'[必填]'，不它返回正确的错误？ – andreister

嗨andreister，没有我然后得到默认mvc错误金额转换是必需的，而不是只是'是必需的' – CareerChange