我在下面的行中收到错误.
temp.day1_veh_p = string.Join(Environment.NewLine, day1.Where(x => x.plannedTriips == 1).Select(x => new {value=x.vehicleNumber+":"+x.shiftCompletedOn }).Cast<string>().ToArray());
错误消息正在发送
Unable to cast object of type '<>f__AnonymousType0`1[System.String]' to type 'System.String'.
列表day1是类型
public class tripDetails
{
public string accountID { get; set; }
public string supplierName { get; set; }
public string supplierCode { get; set; }
public DateTime shiftFrom { get; set; }
public DateTime shiftTo { get; set; }
public int plannedTriips { get; set; }
public int actualTrips { get; set; }
public DateTime …对于你们许多人来说,我的问题相当简单.我想扩展div(onClick)以适应外部div,它应该完全覆盖所有其他三个div.(不是全屏)
我试图使用以下代码执行此操作,但当我尝试执行此操作时,页面的整个结构会受到干扰.
<head runat="server">
<title>Untitled Page</title>
<link href="css/jquery-ui.css" rel="stylesheet" type="text/css" />
<script src="js/jquery-1.8.1.min.js" type="text/javascript"></script>
<script src="http://code.jquery.com/ui/1.9.2/jquery-ui.js" type="text/javascript"></script>
<style type="text/css">
.toggler
{
max-width: 500px;
max-height: 270px;
position: relative;
}
.newClass
{
height: 500px;
width: 290px;
display: inline-block;
z-index: 10000px;
float: left;
}
.divClass
{
float: left;
vertical-align: middle;
height: 50px;
width: 500px;
}
</style>
<script type="text/javascript">
$(document).ready(function(){
$('#div1').click(function() {
$('#div1').toggleClass('newClass');
});
});
</script>
</head>
<body>
<form id="form1" runat="server">
<table width="100%">
<tr style="height: 100%;">
<td style="width: 30%; height: 500px;">
</td>
<td style="width: …我刚刚了解了Google API提供的符号动画.
我的代码中的每一件事都运行正常,但我只是想知道我是否可以在下面的代码中传递一个Image而不是一个符号.
var lineSymbol = {
path: google.maps.SymbolPath.CIRCLE,
scale: 8,
strokeColor: '#393'
};
如果是的话,我该怎么做？我尝试过传递Image路径和Image对象.什么工作..请帮帮我.
javascript jquery google-maps google-maps-api-3 google-maps-markers
我使用DistinctBy返回一个不同的列表.它以某种方式不接受该方法.
List<LastLocation> tempLast = details.DistinctBy(x => x.deviceID).ToList();
这是几天前我使用Visual Studio 2008时的一个工作项目.我将项目迁移到Framework 4.0,我目前正在使用Visual Studio 2012,突然之间这已经开始引发问题.下面是正在使用的命名空间列表和引用的程序集.
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using COMMON;
using MySql.Data.MySqlClient;
using System.Data;
using System.Configuration;
using System.Xml.Linq;
我做错了吗？
我正在尝试使用NodeJS busboy在服务器上上传图像文件，但出现此错误：
Service Listening for request on: 8080
Error: Unsupported content type: image/png
at Busboy.parseHeaders (D:\ImageUploadService\node_modules\busboy\lib\main.j
s:66:9)
at new Busboy (D:\ImageUploadService\node_modules\busboy\lib\main.js:21:10)
at D:\ImageUploadService\server.js:15:15
at Layer.handle [as handle_request] (D:\ImageUploadService\node_modules\expr
ess\lib\router\layer.js:76:5)
at next (D:\ImageUploadService\node_modules\express\lib\router\route.js:100:
13)
at Route.dispatch (D:\ImageUploadService\node_modules\express\lib\router\rou
te.js:81:3)
at Layer.handle [as handle_request] (D:\ImageUploadService\node_modules\expr
ess\lib\router\layer.js:76:5)
at D:\ImageUploadService\node_modules\express\lib\router\index.js:234:24
at Function.proto.process_params (D:\ImageUploadService\node_modules\express
\lib\router\index.js:312:12)
at D:\ImageUploadService\node_modules\express\lib\router\index.js:228:12
下面是我的代码：
app.post('/uploadImage',function(req,res){
var alias=req.query.alias;
var imagetype=req.query.imagetype; //can be media/profile
var busboy = new Busboy({ headers: req.headers });
busboy.on('file', function(fieldname, file, filename, encoding, mimetype) {
var saveTo = …我试图在我的服务器上运行 npm install 并收到此错误。
> node-cron@2.0.3 postinstall /home/workspace/AgreementCancellationProd/retrymechanism/node_modules/node-cron
> opencollective-postinstall
/usr/bin/env: node: Permission denied
npm WARN retrymechanism@1.0.0 No description
npm WARN retrymechanism@1.0.0 No repository field.
npm ERR! code ELIFECYCLE
npm ERR! errno 126
npm ERR! node-cron@2.0.3 postinstall: `opencollective-postinstall`
npm ERR! Exit status 126
npm ERR!
npm ERR! Failed at the node-cron@2.0.3 postinstall script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.
npm ERR! A complete log of this run can be …我的一位同事建议我在文件顶部声明变量
var a,b,c,d;
// or
var a=1,b=1,c=1,d=1;
代替
var a=1;
//some code
var b =1;
//some code
var c=1;
//some code
var d=1;
说这会影响JS的表现.
这真的有什么不同吗？