You&#39;ve overwritten the default look-up flags, if you specify new flags you need to provide all the info so that the property can be found. For example: `BindingFlags.IgnoreCase |  BindingFlags.Public | BindingFlags.Instance`

You need to add `BindingFlags.Public | BindingFlags.Instance`

Thanks, this really helped me out in a pinch today.  I had audit information saved, but with incorrect casing on the property names.  (The auditing is built into a datalayer.)  Anyway so I had to add IgnoreCase as a binding flag, but then it still didn&#39;t work, till my coworker found this answer.  The resulting function:

    public static void SetProperty(Object R, string propertyName, object value)
    {
        Type type = R.GetType();
        object result;
        result = type.InvokeMember(
            propertyName, 
            BindingFlags.SetProperty | 
            BindingFlags.IgnoreCase | 
            BindingFlags.Public | 
            BindingFlags.Instance, 
            null, 
            R, 
            new object[] { value });
    }

This is part of a class I call DotMagic.

Suppose I have a process which spawns exactly one child process. Now when the parent process exits for whatever reason (normally or abnormally, by kill, ^C, assert failure or anything else) I want the child process to die. How to do that correctly?


----------
Some similar question on stackoverflow:

 * (asked earlier) [https://stackoverflow.com/questions/269494/how-can-i-cause-a-child-process-to-exit-when-the-parent-does][1]
 * (asked later) [https://stackoverflow.com/questions/395877/are-child-processes-created-with-fork-automatically-killed-when-the-parent-is-k][2]


  [1]: https://stackoverflow.com/questions/269494/how-can-i-cause-a-child-process-to-exit-when-the-parent-does
  [2]: https://stackoverflow.com/questions/395877/are-child-processes-created-with-fork-automatically-killed-when-the-parent-is-k
----------
Some similar question on stackoverflow for **Windows**:  

 * https://stackoverflow.com/questions/53208/how-do-i-automatically-destroy-child-processes-in-windows  
 * https://stackoverflow.com/questions/3342941/kill-child-process-when-parent-process-is-killed

How to make child process die after parent exits?

I believe there&#39;s a way to find the kth largest element in an unsorted array of length n in O(n).  Or perhaps it&#39;s &quot;expected&quot; O(n) or something.  How can we do this?



How to find the kth largest element in an unsorted array of length n in O(n)?

Imagine the following

A type T has a field Company.
When executing the following method it works perfectly:

    Type t = typeof(T);
    t.GetProperty(&quot;Company&quot;)

Whith the following call I get null though

    Type t = typeof(T);
    t.GetProperty(&quot;company&quot;, BindingFlags.IgnoreCase)

Anybody got an idea?

BindingFlags.IgnoreCase not working for Type.GetProperty()?

Imagine the following
A type T has a field Company.
When executing the following method it works perfectly:
<pre><code class="hljs language-ini">Type t = typeof(T);
t.GetProperty("Company")
</code></pre>
Whith the following call I get null though
<pre><code class="hljs language-ini">Type t = typeof(T);
t.GetProperty("company", BindingFlags.IgnoreCase)
</code></pre>
Anybody got an idea?

Is there any way to find out what exceptions might be thrown by any method in .NET code? Ideally I want to see what might be thrown and choose which ones I want to handle. I guess I want the information you&#39;d get from the throws clause in java. 

The situation is I&#39;m doing a linq query on an xml document from the network and want to know what could go wrong. I could open up the assembly in reflector and have a look but I thought there might be an easier way. 

Finding out what exceptions a method might throw in C#

I need to search a string in the string array. I dont want to use any for looping in it

    string [] arr = {&quot;One&quot;,&quot;Two&quot;,&quot;Three&quot;};

    string theString = &quot;One&quot;

I need to check whether theString variable is present in arr.



How to search a string in String array

I have the following code:

	Using cmd As SqlCommand = Connection.CreateCommand
		cmd.CommandText = &quot;UPDATE someTable SET Value = @Value&quot;
		cmd.CommandText &amp;= &quot; WHERE Id = @Id&quot;
		cmd.Parameters.AddWithValue(&quot;@Id&quot;, 1234)
		cmd.Parameters.AddWithValue(&quot;@Value&quot;, &quot;myValue&quot;)
		cmd.ExecuteNonQuery
	End Using

I wonder if there is any way to get the final SQL statment as a String, which should look like this:

&lt;!-- language: lang-sql --&gt;

    UPDATE someTable SET Value = &quot;myValue&quot; WHERE Id = 1234

If anyone wonders why I would do this:

  - for logging (failed) statements
  - for having the possibility to copy &amp; paste it to the Enterprise Manager for testing purposes

Get the generated SQL statement from a SqlCommand object?

I have always initialized my strings to NULL, with the thinking that NULL means the absence of a value and &quot;&quot; or String.Empty is a valid value.  I have seen more examples lately of code where String.Empty is considered the default value or represents no value.  This strikes me as odd, with the newly added nullable types in c# it seems like we are taking strides backwards with strings by not using the NULL to represent &#39;No Value&#39;.

**What do you use as the default initializer and why?**

*Edit: Based on the answers I futher my further thoughts*

1. **Avoiding error handling** If the value shouldn&#39;t be null, why did it get set to `NULL` in the first place?  Perhaps it would be better to identify the error at the place where it occurs rather than cover it up through out the rest of your codebase?  

2. **Avoiding null checks** If you are tired of doing null checks in code, wouldn&#39;t it be better to abstract the null checks?  Perhaps wrap (or extend!) the string methods to make them `NULL` safe? What happens if you constantly use `String.Empty` and a null happens to work it&#39;s way into your system, do you start adding `NULL` checks anyways?

I can&#39;t help but return to the opinion that it is laziness. Any DBA would slap you nine ways to silly if you used &#39;&#39; instead of `null` in his\her database. I think the same principles apply in programming and there should be somebody to smack those upside the head who use `String.Empty` rather than `NULL` to represent no value.

&gt; ### Related Questions
&gt; * [In C#, should I use string.Empty or String.Empty or “” ?](https://stackoverflow.com/questions/263191/in-c-should-i-use-stringempty-or-stringempty-or)
&gt; * [What is the difference between String.Empty and “”](https://stackoverflow.com/questions/151472/what-is-the-difference-between-stringempty-and)
&gt; * [Null or empty string to represent no data in table column?](https://stackoverflow.com/questions/167952/null-or-empty-string-to-represent-no-data-in-table-column)

Default string initialization: NULL or Empty?

I&#39;ve got a junk directory where I toss downloads, one-off projects, email drafts, and other various things that might be useful for a few days but don&#39;t need to be saved forever.  To stop this directory from taking over my machine, I wrote a program that will delete all files older than a specified number of days and logs some statistics about the number of files deleted and their size just for fun.

I noticed that a few project folders were living way longer than they should, so I started to investigate.  In particular, it seemed that folders for projects in which I had used SVN were sticking around.  It turns out that the read-only files in the .svn directories are not being deleted.  I just did a simple test on a read-only file and discovered that &lt;code&gt;System.IO.File.Delete&lt;/code&gt; and &lt;code&gt;System.IO.FileInfo.Delete&lt;/code&gt; will not delete a read-only file.

I don&#39;t care about protecting files in this particular directory; if something important is in there it&#39;s in the wrong place.  Is there a .NET class that can delete read-only files, or am I going to have to check for read-only attributes and strip them?

How do I delete a read-only file?

I know of `is` and `as` for `instanceof`, but what about the reflective [isInstance()][1] method?

  [1]: http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Class.html#isInstance(java.lang.Object)


What is the C# equivalent to Java&#39;s isInstance()?

I want to discover at run-time ONLY the static Methods of a class, how can I do this?
Or, how to differentiate between static and non-static methods.

How can I check if a method is static using reflection?

How can I check whether a variable is defined in Ruby?  Is there an `isset`-type method available?


Checking if a variable is defined?

I&#39;m currently considering the use of Reflection classes (ReflectionClass and ReflectionMethod mainly) in my own MVC web framework, because I need to automatically instanciate controller classes and invoke their methods without any required configuration (&quot;convention over configuration&quot; approach).

I&#39;m concerned about performance, even though I think that database requests are likely to be bigger bottlenecks than the actual PHP code.

So, I&#39;m wondering if anyone has any good or bad experience with PHP 5 Reflection from a performance point of view.

Besides, I&#39;d be curious to know if any one of the popular PHP frameworks (CI, Cake, Symfony, etc.) actually use Reflection.

PHP 5 Reflection API performance

In C# is there a technique using reflection to determine if a method has been added to a class as an extension method?

Given an extension method such as the one shown below is it possible to determine that Reverse() has been added to the string class?

    public static class StringExtensions
    {
        public static string Reverse(this string value)
        {
            char[] cArray = value.ToCharArray();
            Array.Reverse(cArray);
            return new string(cArray);
        }
    }

We&#39;re looking for a mechanism to determine in unit testing that the extension method was appropriately added by the developer.  One reason to attempt this is that it is possible that a similar method would be added to the actual class by the developer and, if it was, the compiler will pick that method up.

Reflection to Identify Extension Methods

I want to override the `__getattr__` method on a class to do something fancy but I don&#39;t want to break the default behavior.

What&#39;s the correct way to do this?

How do I override __getattr__ in Python without breaking the default behavior?

In Java, we can see the property value of `os.name` to know the name of the underlying operating system: `System.getProperty(&quot;os.name&quot;)`.

For each edition of Windows, it used to return always the exact name of the OS: `Windows XP` for XP, `Windows Vista` for Vista, `Windows 7` for Seven, `Windows 8.1` for 8.1, and so on...

The problem is: I just updated my Windows 8.1 to Windows 10 using the released Microsoft updater, and it seems like this property still remains `Windows 8.1`:

    public class OSTest {
      public static void main(String[] args) {
        System.out.println(System.getProperty(&quot;os.name&quot;));
      }
    }

How can I create a workaround for this? And, does anyone know if this problem persists if installing a fresh Windows 10 copy - that is, this bug is caused by the Microsoft auto-updater -?

Content Type	Original Author	Original Content on Stackoverflow
Question	Boris Callens	View Question on Stackoverflow
Solution 1 - C#	Pop Catalin	View Answer on Stackoverflow
Solution 2 - C#	leppie	View Answer on Stackoverflow
Solution 3 - C#	Josh Warner-Burke	View Answer on Stackoverflow

BindingFlags.IgnoreCase not working for Type.GetProperty()?

C# Problem Overview

C# Solutions

Solution 1 - C#

Solution 2 - C#

Solution 3 - C#

How to find the kth largest element in an unsorted array of length n in O(n)?

How to make child process die after parent exits?

Attributions