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What is the difference between “INNER JOIN” and “OUTER JOIN”?
...Venn diagram intersection.
An outer join of A and B gives the results of A union B, i.e. the outer parts of a Venn diagram union.
Examples
Suppose you have two tables, with a single column each, and data as follows:
A B
- -
1 3
2 4
3 5
4 6
Note that (1,2) are unique to A, (3,...
Prevent Caching in ASP.NET MVC for specific actions using an attribute
...ve Microsoft.AspNet.Mvc.Filters.ResponseCacheFilter
public void ConfigureServices(IServiceCollection services)
...
services.AddMvc(config=>
{
config.Filters.Add(
new ResponseCacheFilter(
new CacheProfile() {
...
catch all unhandled exceptions in ASP.NET Web Api
...application's HttpConfiguration, inside a config callback like so:
config.Services.Add(typeof(IExceptionLogger), new TraceExceptionLogger());
or directly:
GlobalConfiguration.Configuration.Services.Add(typeof(IExceptionLogger), new TraceExceptionLogger());
...
Multiple select statements in Single query
...T(user_table.id) AS TableCount,'user_table' AS TableSource FROM user_table
UNION SELECT COUNT(cat_table.id) AS TableCount,'cat_table' AS TableSource FROM cat_table
UNION SELECT COUNT(course_table.id) AS TableCount, 'course_table' AS TableSource From course_table;
The Nice thing about an approch li...
What should I do if the current ASP.NET session is null?
....Current.Session and it is null. However, I am calling the method via a webservice method through ajax using jQuery.
As I found out here you can fix the problem with a simple attribute on the method, or use the web service session object:
There’s a trick though, in order to access the session...
What makes a SQL statement sargable?
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How to give ASP.NET access to a private key in a certificate in the certificate store?
...s able to use winhttpcertcfg.exe to give private key access to the NETWORK SERVICE account. How do I give permissions to access a Private Key in a certificate in the certificate store (Local Computer\Personal) on a Windows Server 2008 R2 in an IIS 7.5 website?
...
解决 A potentially dangerous Request.Form value was detected from the ...
...证（ValidationRequest），这不仅包括ASP.NET，同时也包括Web Services等各种HTTP请求，不仅仅针对aspx页面，也针对HTTP Handler，HTTP Module等，因为这个验证（Valify）的过程，将会发生在BeginRequest事件之前。
基于以上原理，在ASP.NET之前的...
解决 A potentially dangerous Request.Form value was detected from the ...
...证（ValidationRequest），这不仅包括ASP.NET，同时也包括Web Services等各种HTTP请求，不仅仅针对aspx页面，也针对HTTP Handler，HTTP Module等，因为这个验证（Valify）的过程，将会发生在BeginRequest事件之前。
基于以上原理，在ASP.NET之前的...
解决 A potentially dangerous Request.Form value was detected from the ...
...证（ValidationRequest），这不仅包括ASP.NET，同时也包括Web Services等各种HTTP请求，不仅仅针对aspx页面，也针对HTTP Handler，HTTP Module等，因为这个验证（Valify）的过程，将会发生在BeginRequest事件之前。
基于以上原理，在ASP.NET之前的...