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How to allow to accept only image files?
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That should be the selected answer! It just lack a note saying that you still need to check server-side (because of non supporting browser, but also for security)
– Erdal G.
Dec 19 '15 at 13:40
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MySQL check if a table exists without throwing an exception
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If you're using MySQL 5.0 and later, you could try:
SELECT COUNT(*)
FROM information_schema.tables
WHERE table_schema = '[database name]'
AND table_name = '[table name]';
Any results indicate the table exists.
From: http://www.electrictoolbox.com/check-if-mysql-table-exis...
Store boolean value in SQLite
...TO foo VALUES("0.0");
sqlite> INSERT INTO foo VALUES("1.0");
sqlite> select mycolumn, typeof(mycolumn) from foo;
0|integer
1|integer
0|integer
1|integer
0|integer
1|integer
and some that will fail:
sqlite> INSERT INTO foo VALUES("-1");
Error: constraint failed
sqlite> INSERT INTO foo ...
How do I center a window onscreen in C#?
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Using the Property window
Select form → go to property window → select "start position" → select whatever the place you want.
Programmatically
Form form1 = new Form();
form1.StartPosition = FormStartPosition.CenterScreen;
form1.ShowDialog();
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The type or namespace name 'Objects' does not exist in the namespace 'System.Data'
...ontext.tt and be nested under your edmx file in Solution Explorer. You can select the templates in Solution Explorer and press the Del key to delete them.
Note: In Web Site projects the templates will not be nested under your edmx file, but listed alongside it in Solution Explorer.
Note: In VB.N...
How can I get every nth item from a List?
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}
and you write in a LINQish way
from var element in MyList.GetNth(10) select element;
2nd Edit:
To make it even more LINQish
from var i in Range(0, ((myList.Length-1)/n)+1) select list[n*i];
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How do you automatically set text box to Uppercase?
...ly expanded version should resolve that
<input oninput="let p=this.selectionStart;this.value=this.value.toUpperCase();this.setSelectionRange(p, p);" />
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How does one parse XML files? [closed]
...t;XElement> elements = from c in doc.Descendants(ns + "exampleTagName") select c;
// obtain a single element with specific tag (first instance), useful if only expecting one instance of the tag in the target doc
XElement element = (from c in doc.Descendants(ns + "exampleTagName" select c...
Centering controls within a form in .NET (Winforms)? [duplicate]
...on't care about resizing (if you do care, go with Mitch Wheats solution):
Select the control -> Format (menu option) -> Center in Window -> Horizontally or Vertically
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How to run a single test with Mocha?
...ed describe() calls for namespacing in order to make it easy to locate and select particular sets.
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