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ExecuteReader requires an open and available Connection. The connection's current state is Connectin
...on = new SqlConnection(connectionString))
{
var queryString = "SELECT PromotionID, PromotionTitle, PromotionURL FROM Promotion WHERE PromotionID=@PromotionID";
using (var da = new SqlDataAdapter(queryString, connection))
{
// you could also use a SqlDataReader...
What reason is there to use null instead of undefined in JavaScript?
...
This should have been the selected answer
– alaboudi
Mar 1 at 6:19
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FileSystemWatcher Changed event is raised twice
...<FileSystemEventArgs>(fileSystemWatcher, "Renamed") .Select(e => e.EventArgs) .Distinct(e => e.FullPath) .Subscribe(onNext);
– Kjellski
Oct 24 '14 at 15:55
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Simulator slow-motion animations are now on?
...ot use the physical keyboard, but instead always "type" using the mouse to select letters on the simulators pop-up keyboard.
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What are all the user accounts for IIS/ASP.NET and how do they differ?
...nymous Authentication entry:
Ensure that "Application pool identity" is selected:
When you come to apply file and folder permissions you grant the Application Pool identity whatever rights are required. For example if you are granting the application pool identity for the ASP.NET v4.0 pool per...
Should you declare methods using overloads or optional parameters in C# 4.0?
...call site. By contrast, overloads provide a means by which a compiler can select one of a number of methods, some of which might supply default values themselves. Note that if one tries to call a method that specifies optional parameters from code written in a language which doesn't support them, ...
What makes Lisp macros so special?
...could write a macro that lets you say something like:
(setvar *rows* (sql select count(*)
from some-table
where column1 = "Yes"
and column2 like "some%string%")
And thats not even getting into Reader macros.
Hope this helps.
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In absence of preprocessor macros, is there a way to define practical scheme specific flags at proje
...BGU key work in #IF DEBUG works in debug mode and #ELSE in release mode:
Select your target,
In Build Setting tab search for "Active Compilation Condition",
Set the value of its "Debug" item to "YourKeyWord",
Use simply as follow:
#if DEBUG
print("You'r running in DEBUG mode!")
#else
prin...
Reopen last closed tab in Visual Studio
...This will open the recent files menu, which you can then use the arrows to select one and open it by hitting Enter.
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Android: Background Image Size (in Pixel) which Support All Devices
...ese steps:
Open the existing image in GIMP tool.
Go to "Image" menu, and select "Scale Image..."
Use below pixel dimension that you need:
xxxhdpi: 1280x1920 px
xxhdpi: 960x1600 px
xhdpi: 640x960 px
hdpi: 480x800 px
mdpi: 320x480 px
ldpi: 240x320 px
Then "Export" the image from "File" menu.
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