Question

我有两个Ajax请求。第一个从日期选择器获取日期，并检查数据库日期。一切正常。

第二个请求从日期选择器获取日期，并检索该月的第一个日期和该月的最后一个日期。这会导致错误。

这是WebMethod：

[System.Web.Services.WebMethod]
public static string GetDateFromDB(DateTime compareDate)
{            
  string selectedDate = compareDate.ToString("yyyy/MM/dd");                           
  SqlConnection conn = new SqlConnection(ConfigurationManager.ConnectionStrings["LoginDBConnectionString1"].ConnectionString);

  // testing purpose
  SqlCommand com = new SqlCommand("SELECT * from Holiday where Date='" + selectedDate + "'", conn);           
  SqlDataAdapter sqlDa = new SqlDataAdapter(com);       
  DataTable dt = new DataTable();
  sqlDa.Fill(dt);

  if (dt == null || dt.Rows.Count == 0)
    return "NG";
  else
    return "OK";
}

[System.Web.Services.WebMethod]
public static string GetFirstDateAndLastDate(DateTime firstDayDate, DateTime lastDayDate, string ddlName)
{
  string firstDay = firstDayDate.ToString("yyyy/MM/dd");
  string lastDay = lastDayDate.ToString("yyyy/MM/dd");

  SqlConnection conn = new SqlConnection(ConfigurationManager.ConnectionStrings["LoginDBConnectionString1"].ConnectionString);

  // testing purpose
  SqlCommand com = new SqlCommand("SELECT sum([NumberOfHours]) FROM [LoginDB1].[dbo].[tbOT] where [Date] between Date =  + '" + firstDay + "' And Date =  + '" + lastDay + "' AND name =  + '" + ddlName + "'", conn);
  SqlDataAdapter sqlDa = new SqlDataAdapter(com);
  DataTable dt = new DataTable();
  sqlDa.Fill(dt);     

  return "NA";            
}

脚本在下面：

jQuery(function($) {
  $("[id$=datepicker]").datepicker({
    onSelect: function(dateText) {
      $(this).change();
      $.ajax({
        type: "POST",
        url: "SupervisorOTRequest.aspx/GetDateFromDB",
        data: '{ "compareDate" : "' + dateText + '"}',
        contentType: "application/json; charset=utf-8",
        dataType: "json",
        success: function(response) {
          if (response.d == "OK") {
            alert("Today is Public Holiday!!!");
            $("[id$=txtOTRate]").val(1);
          } else if (response.d == "NG") {
            var date1 = $("[id$=datepicker]").datepicker('getDate');
            var day = date1.getDay();
            if (day == 1 || day == 2 || day == 3 || day == 4 || day == 5 || day == 6) {
              $("[id$=txtOTRate]").val(1.5);
            } else {
              $("[id$=txtOTRate]").val(2);
            }
          }
        }
      });

      var selectedDate = $("[id$=datepicker]").datepicker('getDate');
      //  var selectedDate = gg.getDate();
      //var selectedDate = $("[id$=datepicker]").val();
      var firstDay = new Date(selectedDate.getFullYear(), selectedDate.getMonth(), 1);
      var lastDay = new Date(selectedDate.getFullYear(), selectedDate.getMonth() + 1, 0);

      var firstDayWithSlashes = (firstDay.getDate()) + '/' + (firstDay.getMonth() + 1) + '/' + firstDay.getFullYear();
      var lastDayWithSlashes = (lastDay.getDate()) + '/' + (lastDay.getMonth() + 1) + '/' + lastDay.getFullYear();

      var data = {};
      data.fristDayDate = firstDayWithSlashes;
      data.lastDayDate = lastDayWithSlashes;
      data.ddlName = $("[id$=ddlName] option:selected").text();

      $.ajax({
        type: "POST",
        url: "SupervisorOTRequest.aspx/GetFirstDateAndLastDate",
        // data: '{ "fristDayDate" : "' + firstDayWithSlashes + '" + "lastDayDate" : "' + lastDayWithSlashes + '"}',
        data: JSON.stringify(data),
        contentType: "application/json; charset=utf-8",
        dataType: "json",
        success: function(response) {
          if (response.d == "NA") {
            $("[id$=txtRemainHour]").val();
          }
        }
      });
    },
  }).on("change", function() {});

  function display(msg) {
    $("<p>").html(msg).appendTo(document.body);
  }
});

当检查“网络”>“标题”>“请求有效负载”下的页面时，页面正确显示（如下）：

{fristDayDate：“ 1/6/2019”，lastDayDate：“ 30/6/2019”，ddlName：“ Masrudin Bin A B Rahman”}
ddlName：“ Masrudin Bin A B Rahman”
fristDayDate：“ 1/6/2019”
lastDayDate：“ 30/6/2019”

但是在预览下，错误消息如下所示：

{消息：“ 30/6/2019不是DateTime的有效值。”，…}
  ExceptionType：“ System.FormatException”
  消息：“ 30/6/2019不是DateTime的有效值。”
  StackTrace：“
  在System.ComponentModel.DateTimeConverter.ConvertFrom（ITypeDescriptorContext上下文，CultureInfo文化，对象值）
  在System.Web.Script.Serialization.ObjectConverter.ConvertObjectToTypeInternal（Object o，Type type，JavaScriptSerializer序列化器，布尔throwOnError，Object＆convertedObject）

在响应下，错误消息如下所示：

{“ Message”：“ 30/6/2019不是DateTime的有效值。”，“ StackTrace”：“
  在System.ComponentModel.DateTimeConverter.ConvertFrom（ITypeDescriptorContext上下文，CultureInfo文化，对象值）
  在System.Web.Script.Serialization.ObjectConverter.ConvertObjectToTypeInternal（Object o，Type type，JavaScriptSerializer序列化程序，布尔throwOnError，Object \ u0026 convertedObject）
  在

Answer 1

Karrieop，

尝试

DateTime firstDay= DateTime.ParseExact(firstDayDate, "yyyy/MM/dd", new CultureInfo("en-US"));

ExceptionType：“ System.FormatException”消息：“ 30/6/2019不是DateTime的有效值。”

1 个答案: