问题描述
我正在开发一个 Web 应用程序，该应用程序将在单击时将数据插入到表中的一行中。当我尝试将日期插入数据库时，出现以下错误：
System.Data.sqlClient.sqlException was unhandled by user code
HResult=-2146232060
Message=Conversion Failed when converting date and/or time from character string.
Source=.Net sqlClient Data Provider
ErrorCode=-2146232060
Class=16
以下字段是 sql Server 表中的日期时间列，e ProfileDate、CheckStartDatetime、LastCheckDate 和 CheckRecord。但是在模型中它们是字符串。我怀疑这是问题，因为当我显示 sql 表中的信息时，会显示日期。
型号：
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
namespace AlertNotificationWeb.Models
{
public class Task
{
public int ID { get; set; }
public string FunctionName { get; set; }
public string FunctionDesc { get; set; }
public string CheckPeriod { get; set; }
public string Profiledate { get; set; }/*Represented as datetime in sql server table */
public int PeriodDay { get; set; }
public string AlertStatus { get; set; }
public string Comment { get; set; }
public String LastCheckDate { get; set; } /*Represented as datetime in sql server table */
public String CheckStartDatetime { get; set; } /*Represented as datetime in sql server table */
public String CheckRecord { get; set; }/*Represented as datetime in sql server table */
}
}
控制器：
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using System.Data.sqlClient;
using AlertNotificationWeb.Models;
using System.Data;
using System.Configuration;
namespace AlertNotificationWeb.Controllers
{
public class TaskController : Controller
{
//
// GET: /Task/
string connectionstring = @"data source=MSsql4\MIS; initial catalog= datamart2; User ID= support_user; Password= support_user_pass";
public ActionResult Index()
{
List<Task> tasks = new List<Task>();
string constr = ConfigurationManager.ConnectionStrings["DefaultConnection"].ConnectionString;
string query = "SELECT [ID],[GroupSubsidiary],[FunctionName],[FunctionDesc],[CheckPeriod],[Profiledate],[AlertStatus],[CheckStartDatetime],[LastCheckDate],[Comment],[CheckRecord] FROM [datamart2].[dbo].[AS2_AlertsResults]";
using (sqlConnection sqlcon = new sqlConnection(constr))
{
using (sqlCommand sqlcmd = new sqlCommand(query))
{
sqlcon.open();
sqlcmd.Connection = sqlcon;
using (sqlDataReader sdr = sqlcmd.ExecuteReader())
{
while (sdr.Read())
{
tasks.Add(new Task
{
ID = Convert.ToInt32(sdr["ID"]),GroupSubsidiary = Convert.ToString(sdr["GroupSubsidiary"]),FunctionName = Convert.ToString(sdr["FunctionName"]),FunctionDesc = Convert.ToString(sdr["FunctionDesc"]),CheckPeriod = Convert.ToString(sdr["CheckPeriod"]),Profiledate = Convert.ToString(sdr["Profiledate"]),AlertStatus = Convert.ToString(sdr["AlertStatus"]),CheckStartDatetime = Convert.ToString(sdr["CheckStartDatetime"]),LastCheckDate = Convert.ToString(sdr["LastCheckDate"]),Comment = Convert.ToString(sdr["Comment"]),CheckRecord = Convert.ToString(sdr["CheckRecord"])
});
}
}
}
sqlcon.Close();
}
return View(tasks);
}
[HttpPost]
public ActionResult UpdateTask(Task task)
{
//string constr = ConfigurationManager.ConnectionStrings["DefaultConnection"].ConnectionString;
string query = "UPDATE AS2_AlertsResults SET AlertStatus= @AlertStatus,Comment= @Comment WHERE ProfileDate= @ProfileDate";
using (sqlConnection sqlcon = new sqlConnection(connectionstring))
{
sqlcon.open();
sqlCommand sqlcmd = new sqlCommand(query,sqlcon);
sqlcmd.Parameters.AddWithValue("@ProfileDate",task.Profiledate);
sqlcmd.Parameters.AddWithValue("@AlertStatus",task.AlertStatus );
sqlcmd.Parameters.AddWithValue("@Comment",task.Comment );
sqlcmd.Connection = sqlcon;
sqlcmd.ExecuteNonQuery();
sqlcon.Close();
}
return new EmptyResult();
}
public ActionResult ArchiveResults(Task task)
{
string query = " INSERT INTO AS2_AlertsResultsArchive(ID,ProfileDate,GroupSubsidiary,FunctionName,FunctionDesc,CheckPeriod,CheckStartDatetime,LastCheckDate,AlertStatus,Comment,CheckRecord) VALUES (@ID,@ProfileDate,@GroupSubsidiary,@FunctionName,@FunctionDesc,@CheckPeriod,@CheckStartDatetime,@LastCheckDate,@AlertStatus,@Comment,@CheckRecord)";
using (sqlConnection sqlcon = new sqlConnection(connectionstring))
{
sqlcon.open();
sqlCommand sqlcmd = new sqlCommand(query,sqlcon);
sqlcmd.Parameters.AddWithValue("@ID",task.ID);
sqlcmd.Parameters.AddWithValue("@ProfileDate",DateTime.Parse(task.Profiledate));
sqlcmd.Parameters.AddWithValue("@GroupSubsidiary",task.GroupSubsidiary);
sqlcmd.Parameters.AddWithValue("@FunctionName",task.FunctionName);
sqlcmd.Parameters.AddWithValue("@FunctionDesc",task.FunctionDesc);
sqlcmd.Parameters.AddWithValue("@CheckPeriod",task.CheckPeriod);
sqlcmd.Parameters.AddWithValue("@AlertStatus",task.AlertStatus);
sqlcmd.Parameters.AddWithValue("@CheckStartDatetime",DateTime.Parse(task.CheckStartDatetime));
sqlcmd.Parameters.AddWithValue("@LastCheckDate",DateTime.Parse(task.LastCheckDate));
sqlcmd.Parameters.AddWithValue("@Comment",task.Comment);
sqlcmd.Parameters.AddWithValue("@CheckRecord",DateTime.Parse(task.CheckRecord));
sqlcmd.Connection = sqlcon;
sqlcmd.ExecuteNonQuery();
sqlcon.Close();
}
return new EmptyResult();
}
}
}
View 和 Jquery/Ajax：（当复选框被选中时，我有 jquery 将 CheckRecord 字段更新为当前时间）
@using AlertNotificationWeb.Models
@model IEnumerable<Task>
@{
Layout = null;
}
<!DOCTYPE html>
<html>
<head>
<Meta name="viewport" content="width=device-width" />
<title>Tasks List</title>
<link href="~/Content/Tablestyles.css" rel="stylesheet" />
<script src="~/Scripts/jquery-ui-1.8.20.min.js"></script>
</head>
<body>
<table id="tblTask" class="table" >
<tr>
<th>ID</th>
<th>GroupSubsidiary</th>
<th>FunctionName</th>
<th>FunctionDesc</th>
<th>CheckPeriod</th>
<th>Profiledate</th>
<th>CheckStartDatetime</th>
<th>LastCheckDate</th>
<th>AlertStatus</th>
<th>Comment</th>
<th>Status Updated</th>
</tr>
@foreach (Task task in Model)
{
<tr>
<td class="taskID">
<span>@task.ID</span>
</td>
<td class="GroupSub">
<span>@task.GroupSubsidiary</span>
</td>
<td class="Fname">
<span>@task.FunctionName</span>
</td>
<td class="Fdesc">
<span>@task.FunctionDesc</span>
</td>
<td class="Checkp">
<span>@task.CheckPeriod</span>
</td>
<td class="Pdate">
<span>@task.Profiledate</span>
</td>
<td class="checkstartdate">
<span>@task.CheckStartDatetime</span>
</td>
<td class="lastcheckdate">
<span>@task.LastCheckDate</span>
</td>
<td class="Status">
@if(task.AlertStatus.IsEmpty()) {
<input type="checkBox" value="NULL" id="checker" />
}else{
<input type="checkBox" value="OK" id="checker2" checked/>
}
</td>
<td class="Comment">
<span>@task.Comment</span>
<input type="text" value="@task.Comment" id="comz" style="display:none" />
</td>
<td class="CheckRecord">
<input type="text" id="crecords" value="@task.CheckRecord" />
</td>
<td>
<a class="Save" href="javascript:;">Save</a>
<a class="Archive" href="javascript:;">Archive</a>
<a class="Cancel" href="javascript:;" style="display:none">Cancel</a>
</td>
</tr>
}
</table>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js"></script>
<script type="text/javascript" src="http://ajax.cdnjs.com/ajax/libs/json2/20110223/json2.js"></script>
<script type="text/javascript">
//editing tasklist
$("body").on("click","#tblTask td",function () {
var row = $(this).closest("tr");
$("td",row).each(function () {
if ($(this).find("input").length > 0) {
$(this).find("input").show();
$(this).find("span").hide();
}
});
});
//updating tasklist
$("body").on("click","#tblTask .Save",row).each(function () {
if ($(this).find("input").length > 0) {
var span = $(this).find("span");
var input = $(this).find("input");
span.html(input.val());
}
});
row.find(".Edit").show();
row.find(".Delete").hide();
row.find(".Cancel").hide();
//$(this).hide();
//finding html elements
var alertval = $("#checker").val();
var comval = $("#comz").val();
var task = JSON.stringify({
//ID: row.find(".taskID").find("span").html(),//GroupSubsidiary: row.find(".GroupSub").find("span").html(),//FunctionName: row.find(".Fname").find("span").html(),//FunctionDesc: row.find(".Fdesc").find("span").html(),//CheckPeriod: row.find(".Checkp").find("span").html(),Profiledate: row.find(".Pdate").find("span").html(),//PeriodDay: row.find(".Pday").find("span").html(),AlertStatus: row.find(".Status").find("input").val(),Comment: row.find(".Comment").find("span").html(),});
$.ajax({
type: 'POST',url: "@Url.Action("UpdateTask","Task")",data: task,contentType: "application/json",dataType: "json",success: function () {
alert("Updated Sucessfully");
},error: function () {
alert("An Error Occured");
}
});
console.log(task);
});
$("body").on("click","#tblTask .Status",function () {
var timeclick = GetTodayDate();
var row = $(this).closest("tr");
$("td",row).each(function () {
var ass = row.find(".Status").find("input");
var cm = row.find(".Comment").find("input");
var dt = row.find(".CheckRecord").find("input");
if ($(ass).prop("checked") == true) {
ass.val("OK");
cm.val("OK");
dt.val(timeclick);
} else if ($(ass).prop("checked") == false) {
ass.val(null);
cm.val("Unchecked")
//row.find(".Status").find("span").html("Unchecked");
}
});
});
function GetTodayDate() {
var today = new Date() ;
var dd= today.getDate();
var mm= today.getMonth();
var yyyy = today.getFullYear();
var hh = today.getHours();
var min = today.getMinutes();
var ss = today.getSeconds();
var ms = today.getMilliseconds();
var current = (mm + 1) + "/" + dd + "/" + yyyy+ " " + hh + ":" + min + ":" + ss + "." + ms;
return current;
}
$("body").on("click","#tblTask .Archive",row).each(function () {
if ($(this).find("input").length > 0) {
var span = $(this).find("span");
var input = $(this).find("input");
span.html(input.val());
}
})
row.find(".Edit").show();
row.find(".Delete").hide();
row.find(".Cancel").hide();
//$(this).hide();
//finding html elements
var alertval = $("#checker").val();
var comval = $("#comz").val();
var task = JSON.stringify({
ID: row.find(".taskID").find("span").html(),GroupSubsidiary: row.find(".GroupSub").find("span").html(),FunctionName: row.find(".Fname").find("span").html(),FunctionDesc: row.find(".Fdesc").find("span").html(),CheckPeriod: row.find(".Checkp").find("span").html(),PeriodDay: row.find(".Pday").find("span").html(),CheckStartDatetime: row.find(".checkstartdate").find("span").html(),LastCheckDate: row.find(".lastcheckdate").find("span").html(),CheckRecord: row.find(".CheckRecord").find("input").val(),url: "@Url.Action("ArchiveResults",data: task,error: function () {
alert("An Error Occured");
}
});
console.log(task);
});
</script>
</body>
</html>
网页示例：
为什么即使在控制器中使用 DateTime.parse 函数后，它也无法转换日期时间给我这个错误？
解决方法
问题似乎来自“状态更新”列？
尝试 12:04，而不是 12:4:26
而且对于空白，您不想传递空白而是 DbNull.Value 实例来传递一个 NULL 值，因此可能需要进行一些转换。