我有一个在我的MVC应用程序中设置的会话变量.每当该会话到期并且用户尝试刷新它们所在的页面时,该页面将抛出错误,因为该会话不再设置.
在加载视图之前,我是否可以检查会话是否已设置？也许把东西放在Global.asax文件中？
我可以在每个ActionResult的开头做这样的事情.
public ActionResult ViewRecord()
{
if (MyClass.SessionName == null)
{
return View("Home");
}
else
{
//do something with the session variable
}
}
这样做还有其他选择吗？在这种情况下,最佳做法是什么？
我有一个服务.我们正在向此服务发送记录.但是,当我们发送太多记录(3,000)时,服务会超时.我的想法是打破记录并打开服务,然后每1,000条记录关闭它.
但是,我收到一个错误:
{"Cannot access a disposed object.\r\nObject name: 'System.ServiceModel.Channels.ServiceChannel'."}
这是我的代码:
ServiceClient client = new ServiceClient();
foreach (Record rc in creditTransactionList)
{
//if we are not on the last one...
if (currentTransCount < totalTransCount)
{
//Current batch count is less than 1,000
if (currentBatchCount <= amountPerBatch)
{
currentBatchCount++;
if (rc != null)
client.RecordInsert(rc);
}
//Current batch count is 1,000
if (currentBatchCount == amountPerBatch)
{
currentBatchCount = 0;
client.Close();
client.Open();
}
//Increment Total Counter by 1
currentTransCount++;
}
else
{
currentBatchCount++;
if …我是一名开发人员,负责维护并不断更快地创建应用程序.我遇到了一段使用的代码.Dispose(),它在一个using语句中.
这是代码:
using (IDbCommand cmd = proxy.Connection.CreateCommand())
{
cmd.CommandText = "usp_GetPluginInfo";
cmd.CommandType = CommandType.StoredProcedure;
cmd.Parameters.Add(proxy.Connection.CreateParameter(cmd, "@dealershipId", dealershipId));
cmd.Parameters.Add(proxy.Connection.CreateParameter(cmd, "@pluginId", pluginId));
PluginInfo[] pluginInfos = PopulatePluginsFromCommand(cmd);
result = pluginInfos.First();
cmd.Dispose();
}
}命令完成后最后一次Dispose 会不会？我不认为Dispose()在这种情况下有必要使用它.
感谢您所有的帮助!
我试图捕获哪个事件被触发.我有两个指向相同功能的事件CurrentLoan_LogEntryEvent.在里面CurrentLoan_LogEntryEvent,我如何确定实际触发了哪个事件:LogEntryAdded或LogEntryChange.
您可以在下面找到我的代码示例.如果您对我的代码有任何疑问,请与我们联系.
CurrentLoan是一个Loan对象,它有两个事件.
public MyApplication()
{
ThirdPartyDLL.LoanOpened += new EventHandler(CurrentLoanOpened);
}
private void CurrentLoanOpened(object sender, EventArgs e)
{
ThirdPartyDLL.CurrentLoan.LogEntryAdded += CurrentLoan_LogEntryEvent;
ThirdPartyDLL.CurrentLoan.LogEntryChange += CurrentLoan_LogEntryEvent;
}
private void CurrentLoan_LogEntryEvent(object sender, LogEntryEventArgs e)
{
// When LogEntry was Added or Changed.
// How do I determine if LogEntryAdded or LogEntryChange was fired?
}
我有两个数组.
var loans = [
{ 'id': '1234', 'active': true, 'state': 'CA' },
{ 'id': '5678', 'active': false, 'state': 'IN' }
];
var people = [
{ 'id':'1', 'licenses': ["IN", "FL"] },
{ 'id':'2', 'licenses': ["CA"] }
];
我想使用lodash来查找所有people拥有州政府贷款许可证的人.
我试过了:
_find(loans, "IN");
但这对我不起作用.
有人有想法吗？
我通过脚本将iTunes资料库导入到表格中.该脚本没有捕获任何重复的歌曲标题和艺术家.因此,我有很多重复的歌曲.
trackid song artist tracknum
4628 Title1 StackO 2
6846 YMCA (blank) 11
9043 YMCA (blank) 11
9381 YMCA (blank) 11
9382 Title2 StackO 3
当歌曲,艺术家和tracknum都相同时,我如何编写我的SQL语句以仅返回YMCA(4628)行的第一个"trackid"？它应该看起来像这样....
trackid song artist tracknum
4628 Title1 StackO 2
6846 YMCA (blank) 11
9382 Title2 StackO 3
这是我现在的SQL ...
"SELECT DISTINCT * FROM wp_tracks WHERE title LIKE '%" . $song . "%' AND artist LIKE '%" . $artist . "%'
这一直困扰着我一段时间.
谢谢.
我有一个名为的对象RateQuote具有以下内容:
例如:
rate = new RateQuote() {
Term = 24,
Miles = 120000,
Name = '24 mo. / 120000 miles'
}
和
rate = new RateQuote() {
Term = 24,
Miles = 50000,
Name = '24 mo. / 50000 miles'
}
和
rate = new RateQuote() {
Term = 12,
Miles = 50000,
Name = '12 mo. / 50000 miles'
}
这些RateQuote将被添加到RateQuote []对象:
public void AddRate(RateQuote rate)
{
Rates = Rates.Concat(new RateQuote[] { …