what does @ symbol means in c#

[thi]

Hi,

Just curious what does the @ system means in c#. Some of the sample codes i
read it written as:

bool bExists = File.Exists(@"c:\\hello.txt");

but i can get the same result as using

bool bExists = File.Exists("c:\hello.txt");

Does @ has special meaning?

Thanks

[Mark Wilden]

"thi" <th******@hotmail.comwrote in message
news:OD**************@TK2MSFTNGP03.phx.gbl...

Hi,

Just curious what does the @ system means in c#. Some of the sample codes
i read it written as:

bool bExists = File.Exists(@"c:\\hello.txt");

but i can get the same result as using

bool bExists = File.Exists("c:\hello.txt");

Does @ has special meaning?

Look more closely at those two statements and you'll see the difference.
Then, get a book on C#.

///ark

[Shawn Wildermuth (C# MVP)]

Hello Mark,

The @ is used to to not require escape sequences. For example:

@"C:\Hello";

is C:\Hello

But:
"C:\Hello";

isn't valid because the \H is an escape sequence.

But...

"C:\\Hello"

is equivalent to:

@"C:\Hello"

Because \\ is an escape sequence for \

Does this help at all? Still using the @"" format is still not the same
as using VB.NET strings (as you can still continue a string past the end
of a line). FOr example:

string s = @"SELECT *
FROM Customers";

Is perfectly valid in C#, but in VB.NET this does not work:

dim s as String = "SELECT *
FROM Customers"

Thanks,
Shawn Wildermuth
Speaker, Author and C# MVP
http://adoguy.com

"thi" <th******@hotmail.comwrote in message
news:OD**************@TK2MSFTNGP03.phx.gbl...

>Hi,

Just curious what does the @ system means in c#. Some of the sample
codes i read it written as:

bool bExists = File.Exists(@"c:\\hello.txt");

but i can get the same result as using

bool bExists = File.Exists("c:\hello.txt");

Does @ has special meaning?

Look more closely at those two statements and you'll see the
difference. Then, get a book on C#.

///ark

[Shawn Wildermuth (C# MVP)]

Hello Mark,

The @ is used to to not require escape sequences. For example:

@"C:\Hello";

is C:\Hello

But:
"C:\Hello";

isn't valid because the \H is an escape sequence.

But...

"C:\\Hello"

is equivalent to:

@"C:\Hello"

Because \\ is an escape sequence for \

Does this help at all? Still using the @"" format is still not the same
as using VB.NET strings (as you can still continue a string past the end
of a line). FOr example:

string s = @"SELECT *
FROM Customers";

Is perfectly valid in C#, but in VB.NET this does not work:

dim s as String = "SELECT *
FROM Customers"

Thanks,
Shawn Wildermuth
Speaker, Author and C# MVP
http://adoguy.com

"thi" <th******@hotmail.comwrote in message
news:OD**************@TK2MSFTNGP03.phx.gbl...

>Hi,

Just curious what does the @ system means in c#. Some of the sample
codes i read it written as:

bool bExists = File.Exists(@"c:\\hello.txt");

but i can get the same result as using

bool bExists = File.Exists("c:\hello.txt");

Does @ has special meaning?

Look more closely at those two statements and you'll see the
difference. Then, get a book on C#.

///ark

[Michael C]

"thi" <th******@hotmail.comwrote in message
news:OD**************@TK2MSFTNGP03.phx.gbl...

Hi,

Just curious what does the @ system means in c#. Some of the sample codes
i read it written as:

bool bExists = File.Exists(@"c:\\hello.txt");

but i can get the same result as using

bool bExists = File.Exists("c:\hello.txt");

Does @ has special meaning?

Neither of those will work as you've got the @ on the wrong text.

Shawn has explained what @ does so I won't repeat the explanation.

Michael

[thi]

thanks i got better understanding now....

"thi" <th******@hotmail.comwrote in message
news:OD**************@TK2MSFTNGP03.phx.gbl...

Hi,

Just curious what does the @ system means in c#. Some of the sample codes
i read it written as:

bool bExists = File.Exists(@"c:\\hello.txt");

but i can get the same result as using

bool bExists = File.Exists("c:\hello.txt");

Does @ has special meaning?

Thanks