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Entity Framework: There is already an open DataReader associated with this Command
...ng to iterate is kind of lazy loading (IQueriable).
foreach (var user in _dbContext.Users)
{
}
Converting the IQueriable collection into other enumerable collection will solve this problem.
example
_dbContext.Users.ToList()
Note: .ToList() creates a new set every-time and it can cause th...
Linq to Entities - SQL “IN” clause
...s
where new[] { "Admin", "User", "Limited" }.Contains(u.User_Rights)
select u
foreach(user u in selected)
{
//Do your stuff on each selected user;
}
Method Syntax:
var selected = users.Where(u => new[] { "Admin", "User", "Limited" }.Contains(u.User_Rights));
...
How to add items to a spinner in Android?
...
XML file:
<Spinner
android:id="@+id/Spinner01"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>
Java file:
public class SpinnerExample extends Activity {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(save...
MySQL “incorrect string value” error when save unicode string in Django
I got strange error message when tried to save first_name, last_name to Django's auth_user model.
9 Answers
...
Remove Object from Array using JavaScript
...odash.js or sugar.js for common tasks like this:
// lodash.js
someArray = _.reject(someArray, function(el) { return el.Name === "Kristian"; });
// sugar.js
someArray.remove(function(el) { return el.Name === "Kristian"; });
in most projects, having a set of helper methods that is provided by libr...
detect key press in python?
...for pause and s for stop), and I would not like it to be something like raw_input that waits for the user's input before continuing execution. Anyone know how to do this in a while loop?
...
android get all contacts
...tentResolver();
Cursor cur = cr.query(ContactsContract.Contacts.CONTENT_URI,
null, null, null, null);
if ((cur != null ? cur.getCount() : 0) > 0) {
while (cur != null && cur.moveToNext()) {
String id = cur.getString(
cur.getColu...
How do I access call log for android?
...owing permission:
<uses-permission android:name="android.permission.READ_CALL_LOG" />
Code:
Uri allCalls = Uri.parse("content://call_log/calls");
Cursor c = managedQuery(allCalls, null, null, null, null);
String num= c.getString(c.getColumnIndex(CallLog.Calls.NUMBER));// for number
Strin...
Doctrine - How to print out the real sql, not just the prepared statement?
...ries I use
sudo vim /etc/mysql/my.cnf
and add those 2 lines:
general_log = on
general_log_file = /tmp/mysql.log
and restart mysql
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follo...
Run javascript function when user finishes typing instead of on key up?
...t one line with underscore.js debounce function:
$('#my-input-box').keyup(_.debounce(doSomething , 500));
This basically says doSomething 500 milliseconds after I stop typing.
For more info: http://underscorejs.org/#debounce
...