问题是HTML选择列表中有多个项目.我想点击任何项目,然后在数据库上查询该项目的ID,检索该值,然后在文本框中显示该项目.我该如何查询数据库?
如果有人提供查询数据库的代码示例,我将非常感激.
好吧,我有一个<ul id="classname"></ul>可以<li id="classname1"></li>使用jquery在表单加载中插入' '内部吗?
<div id="4591" >
<input type="text" id="Title1" name="Title1" value="a" />
<input type="submit" name="button" value="Save" /> </div>
<div id="4592" >
<input type="text" id="Title2" name="Title2" value="a" />
<input type="submit" name="button" value="Save" /> </div>
<div id="4593" >
<input type="text" id="Title3" name="Title3" value="a" />
<input type="submit" name="button" value="Save" /> </div>
Run Code Online (Sandbox Code Playgroud)
这是浏览器生成的html源代码的复制粘贴版本,它清楚地表明我正在页面上生成动态字段.文本框中的名称是数据库中的字段.如果按下其中一个保存按钮,我将如何将特定文本框名称和值发送到要更新的控制器操作.
这段代码有什么问题.
The COMMIT TRANSACTION request has no corresponding BEGIN TRANSACTION.当程序中出现一些异常时,它会给出此错误.我该如何解决?
BEGIN
BEGIN TRANSACTION
DECLARE
@Id bigint
,@Month nvarchar(100)
,@Year nvarchar(100)
,@CountryofExport nvarchar(100)
,@CountryofOrigin nvarchar(100)
,@HSCode nvarchar(100)
,@Unit nvarchar(100)
,@Quantity nvarchar(100)
,@CustomValue nvarchar(255)
,@Type nvarchar(100)
,@TypeBit bit
,@CountryofExportID int
,@CountryofOriginID int
,@MeasurementId int
,@Remarks nvarchar(500)
,@CommodityId int
,@SDate nvarchar(100)
,@SameRec int
,@counts int
DECLARE @Cursor_TradeFlow CURSOR
SET @Cursor_TradeFlow = CURSOR FOR
SELECT [Id],[Months],[Years],[CountryofExport],[CountryofOrigin],[HSCode],[Quantity],[Unit],[CustomValue],[Type] FROM [Temp_Trading]
OPEN @Cursor_TradeFlow
FETCH NEXT FROM @Cursor_TradeFlow INTO @Id, @Month, @Year, @CountryofExport, @CountryofOrigin, @HSCode,@Quantity, @Unit, @CustomValue, …Run Code Online (Sandbox Code Playgroud) using (DbCommand command = oconn.CreateCommand())
{
command.CommandText = "CREATE TABLE [Sheet2$] (F1 number, F2 char(255), F3 char(128))";
command.ExecuteNonQuery();
for (int i = 1; i <= 20; i++)
{
//now we insert the values into the existing sheet...no new sheet is added.
command.CommandText = "INSERT INTO [Sheet2$] (F1, F2, F3) VALUES(1,\"Fake Record\",\"Fake Record\")";
command.ExecuteNonQuery();
}
}
Run Code Online (Sandbox Code Playgroud)
我正在使用此代码在excel文件表中插入一些记录.我想要做的是看看例如Sheet1是否在那里然后创建工作表2并在那里插入这些记录.如果它只找到表3,那么我想创建另一个sheet4并在那里插入记录,依此类推.我怎样才能做到这一点?
我是异步的新手,等待编程风格.如何解决以下问题:
我先调用下面的代码.这里的问题是第一行正在等待填充它的需要categoriesvm.Categorieslist,但它没有,但第二行被调用.(我认为这是await的默认行为)
如何确保仅categoriesvm.Categorieslist在第一行中填充第二行时才调用第二行?
protected override void OnNavigatedTo(System.Windows.Navigation.NavigationEventArgs e)
{
categoriesvm.GetCategories();
BookCategories.DataContext = from vm in categoriesvm.Categorieslist select vm;
}
Run Code Online (Sandbox Code Playgroud)
在上面的代码中,当我执行第一行时,它会在Categorieslist我上面访问的列表的下方.
public async void GetCategories()
{
Categorieslist = new ObservableCollection<Categories>(await PhoneClient.GetDefaultCategories());
}
Run Code Online (Sandbox Code Playgroud)
在phoneclient下面
public class PhoneClient
{
private static readonly HttpClient client;
public static Uri ServerBaseUri
{
get { return new Uri("http://169.254.80.80:30134/api/"); }
}
static PhoneClient()
{
client =new HttpClient();
client.MaxResponseContentBufferSize = 256000;
client.DefaultRequestHeaders.Add("user-agent", "Mozilla/5.0 (compatible; MSIE 10.0; Windows NT 6.2; WOW64; Trident/6.0)"); …Run Code Online (Sandbox Code Playgroud) 用户控制
<%@ Control Language="C#" Inherits="System.Web.Mvc.ViewUserControl" %>
<%
using (MvcApplication1.Models.EgovtDataContext _model = new MvcApplication1.Models.EgovtDataContext())
{
%>
<% foreach(var md in MvcApplication1.Models.) { %>
<% if (md.ParentId == 0)
{ %>
<% } %>
<% } %>
<%} %>
Run Code Online (Sandbox Code Playgroud)
FeatureRepository类
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
namespace MvcApplication1.Models
{
public class FeaturesRepository
{
EgovtDataContext db = new EgovtDataContext();
public IEnumerable<Feature> GetAllFeatures()
{
List<Feature> Features = new List<Feature>();
Feature feature = new Feature();
var AllParentFeatures = FeaturesByParentId(0);
foreach (Feature …Run Code Online (Sandbox Code Playgroud) 我想要一个0到65536之间的范围,那将是什么正则表达式?
我有一个SQL查询,我将传递dd/mm/yyyy但SQL查询需要mm/dd/yyyy.
如何启用此查询以dd/mm/yyyy根据正确的格式获取并显示正确的结果?在SQL Server 2008中实现此功能的最佳方法是什么?
SELECT int_ExchangeRateId, int_LocationId, dtm_Date
FROM ExchangeRate
WHERE dtm_Date >= '01/02/2006' AND dtm_Date <= '12/02/2006' AND int_LocationId = 98
Run Code Online (Sandbox Code Playgroud)
这项工作正确:
SELECT int_ExchangeRateId, int_LocationId,dtm_Date
FROM ExchangeRate
WHERE CAST(dtm_Date AS DATE) BETWEEN '2006-02-02' AND '2006-02-12'
AND int_LocationId=98
Run Code Online (Sandbox Code Playgroud) asp.net-mvc ×3
jquery ×3
c# ×2
regex ×2
sql ×2
.net ×1
asp.net ×1
async-await ×1
c#-5.0 ×1
excel ×1
t-sql ×1
validation ×1