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There is no ViewData item of type 'IEnumerable' that has the key 'xxx'
...ameter which in this case is the source SelectList.
What happened with my error was:
Because the table containing the drop down lists was in a partial view and the ViewData had been changed and no longer contained the SelectList I had referenced, the HtmlHelper (instead of throwing an error) trie...
How to define a function in ghci across multiple lines?
I'm trying to define any simple function that spans multiple lines in ghci, take the following as an example:
7 Answers
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Tags for Emacs: Relationship between etags, ebrowse, cscope, GNU Global and exuberant ctags
...r modes is based simply on regular expressions and that's very fragile and error prone. Hopefully with the inclusion of semantic in Emacs 23.2 (it used to be an external package before that) we'll start seeing more uses for it (like using it to analyse a buffer source code to properly highlight it)
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Can't delete virtual device from Eclipse, android
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If when you try to return to the AVD manageryou get an error saying something like the SDK location has not been set, give the workspace time to load. I followed the above and got this message, it took a while to figure out I was just jumping too quickly to back to the AVD
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Constantly print Subprocess output while process is running
...e = popen.wait()
if return_code:
raise subprocess.CalledProcessError(return_code, cmd)
# Example
for path in execute(["locate", "a"]):
print(path, end="")
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Django Server Error: port is already in use
Restarting the Django server displays the following error:
16 Answers
16
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DropDownList's SelectedIndexChanged event not firing
...e was invalid but because I use the Telerik RadAjaxManager on my pages the error was not showing when I tested in my browser. When I commented out the entire RadAjaxManager the error presented itself and I was able to fix it.
– user2721607
Jul 26 '17 at 11:46
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Throw an error in a MySQL trigger
If I have a trigger before the update on a table, how can I throw an error that prevents the update on that table?
7 An...
Convert seconds to Hour:Minute:Second
...s:
$ php file.php
0:11:25
(I've not tested this much, so there might be errors with floor or so)
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Reading HTML content from a UIWebView
...is actually easier to answer. Look at the stringWithContentsOfURL:encoding:error: method of NSString - it lets you pass in a URL as an instance of NSURL (which can easily be instantiated from NSString) and returns a string with the complete contents of the page at that URL. For example:
NSString *g...