Use `Position` when setting an absolute position and `Seek` when setting a relative position. Both are provided for convenience so you can choose one that fits the style and readability of your code. Accessing `Position` requires the stream be seekable so they&#39;re safely interchangeable.

You can look at the source code for both methods to find out:

- Position property &lt;br&gt;
https://referencesource.microsoft.com/#mscorlib/system/io/memorystream.cs,320
- Seek method &lt;br&gt;
https://referencesource.microsoft.com/#mscorlib/system/io/memorystream.cs,482

The cost is almost identical (3 `if`s and some arithmetics). However, this is only true for jumping to absolute offsets like `Position = 0` and not relative offsets like `Position += 0`, in which case `Seek` seems slightly better. 

However, you should keep in mind that we are talking about performance of a handful of integer arithmetics and `if` checks, that&#39;s like not even accurately measureable with benchmarking methods. Like others already pointed out, there is no significant/detectable difference.


If you are working with files (eg: with the [FileStream][1] class) it seems [Seek(0, SeekOrigin.Begin)][2] is able to keep internal buffer (when possible) while [Position=0][3] will always discard it.

  [1]: https://docs.microsoft.com/en-us/dotnet/api/system.io.filestream
  [2]: https://referencesource.microsoft.com/#mscorlib/system/io/filestream.cs,1651
  [3]: https://referencesource.microsoft.com/#mscorlib/system/io/filestream.cs,1238

What does need to be imported or how can I call the Layout inflater in places other than activity?

    public static void method(Context context){
        //this doesn&#39;t work the getLayoutInflater method could not be found
        LayoutInflater inflater = getLayoutInflater();
        // this also doesn&#39;t work 
        LayoutInflater inflater = context.getLayoutInflater();
    }

I am able to call `getLayoutInflater` only in activity, is that an restriction? What if I want to create custom dialog and I want to inflate view for it, or what if I want to have Toast message with custom view that is shown from a service, I only have the context from the service I do not have any activity but I want to show custom message.

I need the inflater in places in the code that isn&#39;t in the activity class.

How can I do this ?



Call getLayoutInflater() in places not in activity

I created a database on my local machine and then did a backup called `tables.bak` of table `DataLabTables`. 

I moved that backup to a remote machine without that table and tried to do a restore but get the following error:

&gt; System.Data.SqlClient.SqlError: The operating system returned the
&gt; error &#39;5(Access is denied.)&#39; while attempting
&gt; &#39;RestoreContainer::ValidateTargetForCreation&#39; on &#39;c:\Program
&gt; Files\Microsoft SQL Server\MSSQL.1\MSSQL\DataLabTables.mdf&#39;.

How do I fix my rights, if that is the problem?

SQL Server Restore Error - Access is Denied

When you need to reset a stream to beginning (e.g. `MemoryStream`) is it best practice to use

    stream.Seek(0, SeekOrigin.Begin);

or 

    stream.Position = 0;

I&#39;ve seen both work fine, but wondered if one was more correct than the other?

Stream.Seek(0, SeekOrigin.Begin) or Position = 0

When you need to reset a stream to beginning (e.g. <code>MemoryStream</code>) is it best practice to use
<pre><code class="hljs language-ini">stream.Seek(0, SeekOrigin.Begin);
</code></pre>
or
<pre><code class="hljs language-ini">stream.Position = 0;
</code></pre>
I've seen both work fine, but wondered if one was more correct than the other?

I have a class that sends an Email (MailMessage) but I get the following error:

&gt; &quot;The specified string is not in the form required for a subject.&quot;

Is there a handy dandy method to sanitize the strings or do I have to write my own?

Resolving &#39;The specified string is not in the form required for a subject.&#39;

What does `GetHashCode()` calculate when invoked on the `byte[]` array?
The 2 data arrays with equal content do not provide the same hash.

GetHashCode() on byte[] array

I have  the  line in vb code:

    #if Not Debug

which I must convert, and I don&#39;t see it in c#? 

Is there something equivalent to it, or is there some workaround?

#if Not Debug in c#?

&gt; **Possible Duplicate:**  
&gt; [C# - Is there a better alternative than this to &amp;#39;switch on type&amp;#39;?](https://stackoverflow.com/questions/298976/c-sharp-is-there-a-better-alternative-than-this-to-switch-on-type)  

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

Hello suppose i get a big if/else on class type. it&#39;s there a way to do it with a switch case ?

Example :

    function test(object obj)
    {
    if(obj is WebControl)
    {
    
    }else if(obj is TextBox)
    {
    
    }
    else if(obj is ComboBox)
    {
    
    }


etc ...

I would like to create something like 

    switch(obj)
    {
    case is TextBox:
    break;
    case is ComboBox:
    break;
    
    }


}

Switch case on type c#

I have this code :

    stringCutted = myString.Split(&quot;/&quot;). // ???

and I&#39;d like to store in `stringCutted` the last element of the `string[]` after the split, directly, quickly, without storing the splitted array in a variable and access to that element with `array[array.length]`.

Is this possible in C#?

Select last element quickly after a .Split()

Imagine I have defined the following Enum:

    public enum Status : byte
    {
        Inactive = 1,
        Active = 2,
    }

What&#39;s the best practice to use enum? Should it start with `1` like the above example or start with `0` (without the explicit values) like this:

    public enum Status : byte
    {
        Inactive,
        Active
    }

Should an Enum start with a 0 or a 1?

I&#39;m getting the following error when trying to do a linq query:

&gt; LINQ to Entities does not recognize the method &#39;Boolean
&gt; IsCharityMatching(System.String, System.String)&#39; method, and this
&gt; method cannot be translated into a store expression.

I&#39;ve read lots of previous questions where people get the same error, and if I understand this correctly it&#39;s because LINQ to Entities requires the whole linq query expression to be translated to a server query, and therefore you can&#39;t call an outside method in it. I haven&#39;t been able to convert my scenario into something that works yet, and my brain is starting to melt down, so I was hoping someone could point me in the right direction. We&#39;re using Entity Framework and the specification pattern (and I&#39;m new to both).

Here&#39;s the code that uses the specification:

    ISpecification&lt;Charity&gt; specification = new CharitySearchSpecification(charityTitle, charityReference);
                    
    charities = charitiesRepository.Find(specification).OrderBy(p =&gt; p.RegisteredName).ToList();

Here&#39;s the linq expression:

    public System.Linq.Expressions.Expression&lt;Func&lt;Charity, bool&gt;&gt; IsSatisfied()
    {
        return p =&gt; p.IsCharityMatching(this.charityName, this.charityReference);
    }


Here&#39;s the IsCharityMatching method:

	

    public bool IsCharityMatching(string name, string referenceNumber)
    {
        bool exists = true;
    
        if (!String.IsNullOrEmpty(name))
        {
            if (!this.registeredName.ToLower().Contains(name.ToLower()) &amp;&amp;
                !this.alias.ToLower().Contains(name.ToLower()) &amp;&amp;
               !this.charityId.ToLower().Contains(name.ToLower()))
            {
                exists = false;
            }
        }
    
        if (!String.IsNullOrEmpty(referenceNumber))
        {
            if (!this.charityReference.ToLower().Contains(referenceNumber.ToLower()))
            {
                exists = false;
            }
        }
    
        return exists;
    }

Let me know if you need any more information.

Many thanks,

Annelie

LINQ to Entities does not recognize the method

Is there a better way to replace strings?

I am surprised that Replace does not take in a character array or string array.  I guess that I could write my own extension but I was curious if there is a better built in way to do the following?  Notice the last Replace is a string not a character.

    myString.Replace(&#39;;&#39;, &#39;\n&#39;).Replace(&#39;,&#39;, &#39;\n&#39;).Replace(&#39;\r&#39;, &#39;\n&#39;).Replace(&#39;\t&#39;, &#39;\n&#39;).Replace(&#39; &#39;, &#39;\n&#39;).Replace(&quot;\n\n&quot;, &quot;\n&quot;);


Replace multiple characters in a C# string

How can I retrieve the titles of all open windows (including windows such as tabs in Internet Explorer)?

get the titles of all open windows

I have the following code in my web service:

    string str_uploadpath = Server.MapPath(&quot;/UploadBucket/Raw/&quot;);
    FileStream objfilestream = new FileStream(str_uploadpath +
                    fileName, FileMode.Create, FileAccess.ReadWrite);

Can someone help me resolve the issue with this error message from line 2 of the code.

&gt; The given path&#39;s format is not supported.

Permission on the folder is set to full access to everyone and it is the actual path to the folder.

The breakpoint gave me the value of `str_uploadpath` as `C:\\webprojects\\webservices\\UploadBucket\\Raw\\`.

What is wrong with this string?

&quot;The given path&#39;s format is not supported.&quot;

Classes such as `Stream`, `StreamReader`, `StreamWriter` etc implements `IDisposable` interface. That means, we can call `Dispose()` method on objects of these classes. They&#39;ve also defined a `public` method called `Close()`. Now that confuses me, as to what should I call once I&#39;m done with objects? What if I call both? 

My current code is this:


    using (Stream responseStream = response.GetResponseStream())
    {
       using (StreamReader reader = new StreamReader(responseStream))
       {
          using (StreamWriter writer = new StreamWriter(filename))
          {
             int chunkSize = 1024;
             while (!reader.EndOfStream)
             {
                char[] buffer = new char[chunkSize];
                int count = reader.Read(buffer, 0, chunkSize);
                if (count != 0)
                {
                   writer.Write(buffer, 0, count);
                }
             }
             writer.Close();
          }
          reader.Close();
       }
    }

As you see, I&#39;ve written `using()` constructs, which automatically call `Dispose()` method on each object. But I also call `Close()` methods. Is it right?

Please suggest me the best practices when using stream objects. :-)

MSDN example doesn&#39;t use `using()` constructs, and call `Close()` method:

  - [How to: Download Files with FTP][1]

Is it good?

[1]:http://msdn.microsoft.com/en-us/library/ms229711.aspx

Should I call Close() or Dispose() for stream objects?

I am not sure whether I need to call `Flush()` on the used objects if I write something like this:

    using (FileStream...)
    using (CryptoStream...)
    using (BinaryWriter...)
    {
        // do something
    }

Are they always automatically flushed? When does the `using` statement flush them and when it doesn’t (if that can happen)?

Do you need to call Flush() on a stream or writer if you are using the “using” statement?

How to create an instance of `System.IO.Stream stream`. One of my function receives `System.IO.Stream stream` as parameter and write some thing to it. So how can I create a new instance of the same and pass it to the function ?

How to create an instance of System.IO.Stream stream

I&#39;d like to add new line with text to my date.txt file, but instead of adding it into existing date.txt, app is creating new date.txt file..
   

    TextWriter tw = new StreamWriter(&quot;date.txt&quot;);

    // write a line of text to the file
    tw.WriteLine(DateTime.Now);

    // close the stream
    tw.Close();

I&#39;d like to open txt file, add some text, close it, and later after clicking something: open date.txt, add text, and close it again.

So i can get: 

Button pressed: txt opened -&gt; added current time, then close it. Another button pressed, txt opened -&gt; added text &quot;OK&quot;, or &quot;NOT OK&quot; in the same line, then close it again.

So my txt file will look like that:

    2011-11-24 10:00:00 OK
    2011-11-25 11:00:00 NOT OK

How can i do this? Thanks!

Content Type	Original Author	Original Content on Stackoverflow
Question	ConfusedNoob	View Question on Stackoverflow
Solution 1 - C#	gordy	View Answer on Stackoverflow
Solution 2 - C#	ArekBulski	View Answer on Stackoverflow
Solution 3 - C#	tigrou	View Answer on Stackoverflow

Stream.Seek(0, SeekOrigin.Begin) or Position = 0

C# Problem Overview

C# Solutions

Solution 1 - C#

Solution 2 - C#

Solution 3 - C#

SQL Server Restore Error - Access is Denied

Call getLayoutInflater() in places not in activity

Attributions