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Extension methods cannot be dynamically dispatched
...pported.
Cast the dynamic types to actual types, and it will work.
From what I see now, I'd say:
(string) ViewBag.MagNo
Which would result in
@foreach (var item in Model)
{
@Html.DropDownListFor(modelItem => item.TitleIds,
new SelectList(ViewBag.TitleNames as System.Collections...
How to atomically delete keys matching a pattern using Redis
...edis-cli KEYS "prefix:*" | xargs redis-cli DEL
UPDATE
Ok, i understood. What about this way: store current additional incremental prefix and add it to all your keys. For example:
You have values like this:
prefix_prefix_actuall = 2
prefix:2:1 = 4
prefix:2:2 = 10
When you need to purge data, y...
How to add Options Menu to Fragment in Android
...
@Marco HC your code works fine. But what if i want to hide some of the menu for Activity or for Fragment? You have mention about where to implement which option menu (In activity and fragment). But what if i want to hide some menu?
– Shrey...
How to make Git “forget” about a file that was tracked but is now in .gitignore?
... This answer would be a lot more useful if it explained exactly what the given command does, e.g. how it's different from the other suggested solutions.
– LarsH
Aug 19 '16 at 15:39
...
How to create a dialog with “yes” and “no” options?
... for confirm(), which displays a prompt and returns true or false based on what the user decided:
if (confirm('Are you sure you want to save this thing into the database?')) {
// Save it!
console.log('Thing was saved to the database.');
} else {
// Do nothing!
console.log('Thing wa...
entity object cannot be referenced by multiple instances of IEntityChangeTracker. while adding relat
...ice. As a result you have city1 attached to two different context which is what the exception complains about.
You can fix this by creating a context outside of the service classes and injecting and using it in both services:
EmployeeService es = new EmployeeService(context);
CityService cs = new ...
Calculate MD5 checksum for a file
...
I know this question was already answered, but this is what I use:
using (FileStream fStream = File.OpenRead(filename)) {
return GetHash<MD5>(fStream)
}
Where GetHash:
public static String GetHash<T>(Stream stream) where T : HashAlgorithm {
StringBuilder s...
How does OpenID authentication work?
...
What is OpenID?
OpenID is an open, decentralized, free framework for user-centric digital identity. OpenID takes advantage of already existing internet technology (URI, HTTP, SSL, Diffie-Hellman) and realizes that people are...
Why use sprintf function in PHP?
...can translate and order them as needed - yet you still know that no matter what format the string is in - you wish to show the users name.
For example, your site will say "Welcome back [[User]]" on the top of the page. As the programmer you don't know or care how the UI guys are going to write that...
Get average color of image via Javascript
...
"Dominant Color" is tricky. What you want to do is compare the distance between each pixel and every other pixel in color space (Euclidean Distance), and then find the pixel whose color is closest to every other color. That pixel is the dominant color. ...