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There is no ViewData item of type 'IEnumerable' that has the key 'xxx'
...ome other posts about this problem and it is:
If your ViewData contains a SelectList with the same name as your DropDownList i.e. "submarket_0", the Html helper will automatically populate your DropDownList with that data if you don't specify the 2nd parameter which in this case is the source Selec...
SASS - use variables across multiple files
...
This should be now the selected answer, since "import" is marked as deprecated and will be removed in the future.
– TyrionGraphiste
Jun 4 at 13:32
...
File Upload without Form
... this tutorial, here a very basic way to do that:
$('your_trigger_element_selector').on('click', function(){
var data = new FormData();
data.append('input_file_name', $('your_file_input_selector').prop('files')[0]);
// append other variables to data if you want: data.append('field_n...
What is this 'Waiting for Background operation' in Visual Studio 2012?
...blem I struggled with for over two weeks trying to figure out. Note that I selected "Web Development (Code Only)" in the last part of the Reset all Settings wizard. PLEASE UPVOTE SO THIS ANSWER SHOWS UP BETTER ON SEARCHES.
– REMESQ
Nov 16 '12 at 0:18
...
Storing images in SQL Server?
...n stay lean and mean and very efficient, assuming you don't always need to select the employee photo, too, as part of your queries.
For filegroups, check out Files and Filegroup Architecture for an intro. Basically, you would either create your database with a separate filegroup for large data stru...
REST APIs: custom HTTP headers vs URL parameters
... true metadata about the request for custom headers.
HTTP has a very wide selection of headers that cover most everything you'll need. Where I've seen custom headers come up is in a system to system request operating on behalf of a user. The proxy system will validate the user and add "X-User: us...
Setting property 'source' to 'org.eclipse.jst.jee.server:JSFTut' did not find a matching property
...ies"
(double-click on the server icon, click 'Open launch configuration', select the Arguments tab, then enter this in the 'VM arguments' text box)
You might also find it useful to add the VM argument
-Djava.util.logging.SimpleFormatter.format="%1$tc %4$s %3$s %5$s%n"
as well, which will then in...
What is the maximum length of a table name in Oracle?
...ith standard SQL you can also determine the lengths by querying the table: select * from all_tab_columns where table_name = 'ALL_TAB_COLUMNS';
– JustinKSU
Mar 11 '16 at 23:18
1
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How to randomize (or permute) a dataframe rowwise and columnwise?
...ple(1:n()))
or
df2 <- sample_frac(df1, 1L)
column-wise:
df2 <- select(df1, one_of(sample(names(df1))))
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Gmail Error :The SMTP server requires a secure connection or the client was not authenticated. The s
... Yes, the reason is 2 steps verification switched On for gmail account. Select App/Device and click Generate button support.google.com/accounts/answer/185833
– smily
Dec 25 '15 at 15:34
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