As I recall

    TypeOf data Is System.Data.DataView


Edit:  
As James Curran pointed out, this works if data is a subtype of System.Data.DataView as well.

If you want to restrict that to System.Data.DataView only, this should work:

    data.GetType() Is GetType(System.Data.DataView)

Just thought I&#39;d post a summary for the benefit of C# programmers:

### C# `val is SomeType`

&amp;nbsp; &amp;nbsp; &amp;nbsp; In VB.NET: `TypeOf val Is SomeType`

&amp;nbsp; &amp;nbsp; &amp;nbsp; Unlike `Is`, this can only be negated as `Not TypeOf val Is SomeType`

### C# `typeof(SomeType)`

&amp;nbsp; &amp;nbsp; &amp;nbsp; In VB.NET: `GetType(SomeType)`

### C# `val.GetType() == typeof(SomeType)`

&amp;nbsp; &amp;nbsp; &amp;nbsp; In VB.NET: `val.GetType() = GetType(SomeType)`

&amp;nbsp; &amp;nbsp; &amp;nbsp; (although `Is` also works, see next)

### C# `val.ReferenceEquals(something)`

&amp;nbsp; &amp;nbsp; &amp;nbsp; In VB.NET: `val Is something`

&amp;nbsp; &amp;nbsp; &amp;nbsp; Can be negated nicely: `val IsNot something`

---

### C# `val as SomeType`

&amp;nbsp; &amp;nbsp; &amp;nbsp; In VB.NET: `TryCast(val, SomeType)`

### C# `(SomeType) val`

&amp;nbsp; &amp;nbsp; &amp;nbsp; In VB.NET: `DirectCast(val, SomeType)`

&amp;nbsp; &amp;nbsp; &amp;nbsp; (except where types involved implement a cast operator)


You could also use **TryCast** and then check for nothing, **this way you can use the casted type later on**. **If you don&#39;t need to do that, don&#39;t do it this way, because others are more efficient.**

See this example:

**VB:**

        Dim pnl As Panel = TryCast(c, Panel)
        If (pnl IsNot Nothing) Then
            pnl.Visible = False
        End If

**C#**

    Panel pnl = c as Panel;
    if (pnl != null) {
    	pnl.Visible = false;
    }

I am trying to embed binary blobs into an exe file. I am using mingw gcc.

I make the object file like this:

    ld -r -b binary -o binary.o input.txt

I then look objdump output to get the symbols:

    objdump -x binary.o

And it gives symbols named:

    _binary_input_txt_start
    _binary_input_txt_end
    _binary_input_txt_size

I then try and access them in my C program:

    #include &lt;stdlib.h&gt;
    #include &lt;stdio.h&gt;
    
    extern char _binary_input_txt_start[];
    
    int main (int argc, char *argv[])
    {
    	char *p;
    	p = _binary_input_txt_start;
    
    	return 0;
    }

Then I compile like this:

    gcc -o test.exe test.c binary.o

But I always get:

    undefined reference to _binary_input_txt_start

Does anyone know what I am doing wrong?

Embedding binary blobs using gcc mingw

I want to dismiss a FormSheetPresentation modal view controller when the user taps outside the modal view...I have seen a bunch of apps doing this (ebay on ipad for example) but i cant figure out how since the underneath views are disabled from touches when modal views are displayed like this (are they presenting it as a popover perhaps?)...anyone have any suggestions?

Iphone SDK dismissing Modal ViewControllers on ipad by clicking outside of it

What is the Visual Basic equivalent of the following C# boolean expression?

    data.GetType() == typeof(System.Data.DataView)

Note: The variable `data` is declared as `IEnumerable`.



Visual Basic equivalent of C# type check

What is the Visual Basic equivalent of the following C# boolean expression?
<pre><code class="hljs language-scss">data.GetType() == typeof(System.Data.DataView)
</code></pre>
Note: The variable <code>data</code> is declared as <code>IEnumerable</code>.

I have a project in C# and I get this error every time I try to compile the project:

&gt; (Unable to copy file &quot;obj\Debug\Project1.exe&quot; to &quot;bin\Debug\Project1.exe&quot;. The process cannot access the file &#39;bin\Debug\Project1.exe&#39; because it is being used by another process.)

So I have to close the process from the task manager. My project is only one form and there is no multi-threading. 

What is the solution (without restarting VS or killing the process)?

[![enter image description here][1]][1]


  [1]: http://i.stack.imgur.com/150Ly.png

Unable to copy a file from obj\Debug to bin\Debug

I&#39;d like to email myself a quick dump of a GET request&#39;s headers for debugging. I used to be able to do this in classic ASP simply with the Request object, but `Request.ToString()` doesn&#39;t work. And the following code returned an empty string:

    using (StreamReader reader = new StreamReader(Request.InputStream))
    {
        string requestHeaders = reader.ReadToEnd();
        // ...
        // send requestHeaders here
    }

How to dump ASP.NET Request headers to string

There doesn&#39;t appear to be a generic implementation of `OrderedDictionary` (which is in the `System.Collections.Specialized` namespace) in .NET 3.5. Is there one that I&#39;m missing? 

I&#39;ve found implementations out there to provide the functionality, but wondered if/why there isn&#39;t a generic implementation out-of-the-box and if anyone knows whether it&#39;s something in .NET 4.0?


No generic implementation of OrderedDictionary?

I&#39;m trying to use the `.Contains()` function on a list of custom objects

This is the list:

    List&lt;CartProduct&gt; CartProducts = new List&lt;CartProduct&gt;();

And the `CartProduct`:

    public class CartProduct
    {
        public Int32 ID;
        public String Name;
        public Int32 Number;
        public Decimal CurrentPrice;
        /// &lt;summary&gt;
        /// 
        /// &lt;/summary&gt;
        /// &lt;param name=&quot;ID&quot;&gt;The ID of the product&lt;/param&gt;
        /// &lt;param name=&quot;Name&quot;&gt;The name of the product&lt;/param&gt;
        /// &lt;param name=&quot;Number&quot;&gt;The total number of that product&lt;/param&gt;
        /// &lt;param name=&quot;CurrentPrice&quot;&gt;The currentprice for the product (1 piece)&lt;/param&gt;
        public CartProduct(Int32 ID, String Name, Int32 Number, Decimal CurrentPrice)
        {
            this.ID = ID;
            this.Name = Name;
            this.Number = Number;
            this.CurrentPrice = CurrentPrice;
        }
        public String ToString()
        {
            return Name;
        }
    }

So i try to find a similar cartproduct within the list:

    if (CartProducts.Contains(p))

But it ignores similar cartproducts and i don&#39;t seem to know what it checks on - the ID? or it all?

Thanks in advance! :)

.Contains() on a list of custom class objects

I have a project where I have multiple instances of an app running, each of which was started with different command line arguments. I&#39;d like to have a way to click a button from one of those instances which then shuts down all of the instances and starts them back up again with the same command line arguments.

I can get the processes themselves easily enough through `Process.GetProcessesByName()`, but whenever I do, the `StartInfo.Arguments` property is always an empty string. It looks like maybe that property is only valid before starting a process.

[This question][1] had some suggestions, but they&#39;re all in native code, and I&#39;d like to do this directly from .NET. Any suggestions?


  [1]: https://stackoverflow.com/questions/440932/reading-command-line-arguments-of-another-process-win32-c-code

Can I get command line arguments of other processes from .NET/C#?

&gt; **Possible Duplicate:**  
&gt; [Collection initialization syntax in Visual Basic 2008?](https://stackoverflow.com/questions/85892/collection-initialization-syntax-in-visual-basic-2008)  

&lt;!-- End of automatically inserted text --&gt;

How is the following C# code translated to VB.NET?

    var theVar = new List&lt;string&gt;{&quot;one&quot;, &quot;two&quot;, &quot;three&quot;};


Inline list initialization in VB.NET

I&#39;ve been using the `System.Net` namespace ever since we switched from .NET Framework 1.1 to the 3.5 framework, but there&amp;rsquo;s one thing that&amp;rsquo;s been puzzling me since. What&#39;s the difference between the `Sender` and the `From` properties in the `MailMessage` class? 

Are they both the same, and if not is there a reason to use `Sender` together with `From`?

For example:

    Using m As New System.Net.Mail.MailMessage()
        m.Sender = New System.Net.Mail.MailAddress(&quot;test@test.com&quot;, &quot;Name here&quot;)
        m.From = New System.Net.Mail.MailAddress(&quot;test@test.com&quot;, &quot;Name here&quot;)

        m.Subject = &quot;Test&quot;
        m.Body = &quot;Test&quot;

        Dim client As New System.Net.Mail.SmtpClient(&quot;mymailserver.com&quot;)
        client.Send(m)
    End Using

MailMessage, difference between Sender and From properties

Does C# have an equivalent to VB.NET&#39;s DirectCast?

I am aware that it has () casts and the &#39;as&#39; keyword, but those line up to CType and TryCast.

To be clear, these keywords do the following;

**CType/() casts**:  If it is already the correct type, cast it, otherwise look for a type converter and invoke it. If no type converter is found, throw an InvalidCastException.

**TryCast/&quot;as&quot; keyword**: If it is the correct type, cast it, otherwise return null.

**DirectCast**: If it is the correct type, cast it, otherwise throw an InvalidCastException.

After I have spelled out the above, some people have still responded that () is equivalent, so I will expand further upon why this is not true.

DirectCast only allows for either narrowing or widening conversions on the inheritance tree. It does not support conversions across different branches like () does, i.e.:

C# - this compiles and runs:

&lt;!-- language: cs --&gt;

    //This code uses a type converter to go across an inheritance tree
    double d = 10;
    int i = (int)d;

VB.NET - this does NOT COMPILE

&lt;!-- language: vb.net --&gt;

    &#39;Direct cast can only go up or down a branch, never across to a different one.
    Dim d As Double = 10
    Dim i As Integer = DirectCast(d, Integer)

The equivalent in VB.NET to my C# code is CType:

&lt;!-- language: vb.net --&gt;

    &#39;This compiles and runs
    Dim d As Double = 10
    Dim i As Integer = CType(d, Integer)





C#&#39;s equivalent to VB.NET&#39;s DirectCast

Writing a small command line tool, it would be nice to output in different colours. Is this possible?

Is it possible to write to the console in colour in .NET?

I have seen the Tuple introduced in .Net 4 but I am not able to imagine where it can be used. We can always make a Custom class or Struct.



Content Type	Original Author	Original Content on Stackoverflow
Question	Steven	View Question on Stackoverflow
Solution 1 - C#	Powerlord	View Answer on Stackoverflow
Solution 2 - C#	Roman Starkov	View Answer on Stackoverflow
Solution 3 - C#	Nick N.	View Answer on Stackoverflow
Solution 4 - C#	SubZero	View Answer on Stackoverflow

Visual Basic equivalent of C# type check

C# Problem Overview

C# Solutions

Solution 1 - C#

Solution 2 - C#

C# `val is SomeType`

C# `typeof(SomeType)`

C# `val.GetType() == typeof(SomeType)`

C# `val.ReferenceEquals(something)`

C# `val as SomeType`

C# `(SomeType) val`

Solution 3 - C#

Solution 4 - C#

Iphone SDK dismissing Modal ViewControllers on ipad by clicking outside of it

Embedding binary blobs using gcc mingw

Attributions

C# Problem Overview

C# Solutions

Solution 1 - C#

Solution 2 - C#

C# val is SomeType

C# typeof(SomeType)

C# val.GetType() == typeof(SomeType)

C# val.ReferenceEquals(something)

C# val as SomeType

C# (SomeType) val

Solution 3 - C#

Solution 4 - C#

Iphone SDK dismissing Modal ViewControllers on ipad by clicking outside of it

Embedding binary blobs using gcc mingw

Attributions

C# `val is SomeType`

C# `typeof(SomeType)`

C# `val.GetType() == typeof(SomeType)`

C# `val.ReferenceEquals(something)`

C# `val as SomeType`

C# `(SomeType) val`