Multiline strings in VB NET

Question

Is there a way to have multiline strings in VB NET like Python  a       multi line string       or PHP    a    lt  lt  lt END multi line string END    Of course something that is not   multi   amp     line

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No  VB NET does not yet have such a feature  It will be available in the next iteration of VB  visual basic 10  however  link

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in Visual studio 2010  VB NET i try the following and works fine  Dim HtmlSample As String    lt anything gt what ever you want to type here with multiline strings lt  anything gt   dim Test1 as string   lt a gt onother multiline example lt  a gt

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if it s like C   I don t have VB Net installed  you can prefix a string with    foo     Multiline String    this is also useful for things like   C  Windows System32   - it essentially turns off escaping and turns on multiline

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Well  since you seem to be up on your python  may I suggest that you copy your text into python  like    s    this is gonna  last quite a  few lines      then do a     for i in s split   n        print  mySB AppendLine   s      i       mySB AppendLine  this is gonna        mySB AppendLine  last quite a        mySB AppendLine  few lines     or    print    amp     n  join map lambda s     s     s  s split   n            this is gonna   amp           last quite a   amp           few lines    then at least you can copy that out and put it in your VB code   Bonus points if you bind a hotkey  fastest to get with Autohotkey  to do this for for whatever is in your paste buffer   The same idea works well for a SQL formatter

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To me that is the most annoying thing about VB as a language  Seriously  i once wrote the string in a file and wrote code something along the lines of   Dim s as String   file get contents  filename txt     just so i could test the query directly on SQL server if i need to   My current method is to use a stored procedure on the SQL Server and just call that so i can pass in parameters to the query  etc

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you can use XML for this like  dim vrstr as string    lt s gt      some words     some words     some     words  lt  s gt

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Disclaimer  I love python  It s multi-line strings are only one reason    But I also do VB Net  so here s my short-cut for more readable long strings     Dim lines As String            Line 1        Line 2        Line 3        Dim s As String   Join lines  vbCrLf

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Since this is a readability issue  I have used the following code   MySql      MySql   MySql  amp   SELECT myTable id  MySql   MySql  amp    FROM myTable  MySql   MySql  amp    WHERE myTable id equipment      amp  lblId Text

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Multi-line strings are available since the Visual Studio 2015  Dim sql As String    quot      SELECT ID  Description     FROM inventory     ORDER BY DateAdded  quot   You can combine them with string interpolation to maximize usefullness  Dim primaryKey As String    quot ID quot  Dim inventoryTable As String    quot inventory quot   Dim sql As String     quot      SELECT  primaryKey   Description     FROM  inventoryTable      ORDER BY DateAdded  quot   Note that interpolated strings begin with   and you need to take care of  quot     and   contained inside     convert them into  quot  quot      or    respectively  Here you can see actual syntax highlighting of interpolated parts of the above code example   If you wonder if their recognition by the Visual Studio editor also works with refactoring  e g  mass-renaming the variables   then you are right  code refactoring works with these  Not mentioning that they also support IntelliSense  reference counting or code analysis

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I used this variant        Dim query As String    lt   CDATA          SELECT              a QuestionID         FROM              CR Answers a          INNER JOIN              CR Class c ON c ClassID   a ClassID         INNER JOIN             CR Questions q ON q QuestionID   a QuestionID         WHERE              a CourseID   1         AND              c ActionPlan   1         AND q Q Year    11 12          AND q Q Term  lt    SELECT CurrentTerm FROM CR Current Term         gt  Value     it allows  lt    in the string

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Multi-line string literals in vb net using the XElement class   Imports System Xml Linq  Public Sub Test    dim sOderBy as string       dim xe as XElement    lt SQL gt                  SELECT   FROM  lt    sTableName   gt                    lt ORDER BY gt  ORDER BY  lt    sOrderBy   gt  lt  ORDER BY gt                    lt  SQL gt       conditionally remove a section  if sOrderBy Length   0 then xe  lt ORDER BY gt  Remove      convert XElement value to a string  dim sSQL as String   xe Value  End Sub

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Use vbCrLf or vbNewLine  It works with MessageBoxes and many other controls I tested   Dim str As String str    First line   amp  vbCrLf  amp   Second line  MsgBox str  str    First line   amp  vbNewLine  amp   Second line  MsgBox str    It will show two identical MessageBoxes with 2 lines

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VB Net has no such feature and it will not be coming in Visual Studio 2010   The feature that jirwin is refering is called implicit line continuation   It has to do with removing the   from a multi-line statement or expression   This does remove the need to terminate a multiline string with   but there is still no mult-line string literal in VB   Example for multiline string  Visual Studio 2008  Dim x    line1   amp  vbCrlf  amp             line2    Visual Studio 2010  Dim x    line1   amp  vbCrlf  amp            line2

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this was a really helpful article for me  but nobody mentioned how to concatenate in case you want to send some variables  which is what you need to do 99  of the time         lt    variable          Here s how you do it    lt SQL gt  SELECT   FROM MyTable WHERE FirstName   lt    EnteredName   gt    lt  SQL gt  Value

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You can use XML Literals to achieve a similar effect  Imports System XML Imports System XML Linq Imports System Core  Dim s As String    lt a gt Hello World lt  a gt  Value  Remember that if you have special characters  you should use a CDATA block  Dim s As String    lt   CDATA Hello World  amp  Space   gt  Value   2015 UPDATE  Multi-line string literals were introduced in Visual Basic 14  in Visual Studio 2015   The above example can be now written as  Dim s As String    quot Hello World  amp  Space quot    MSDN article isn t updated yet  as of 2015-08-01   so check some answers below for details   Details are added to the Roslyn New-Language-Features-in-VB-14 Github repository

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Available in Visual Basic 14 as part of Visual Studio 2015 https   msdn microsoft com en-us magazine dn890368 aspx  But not yet supported by R   The good news is they will be supported soon  Please vote on Youtrack to notify JetBrains you need them also

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I figured out how to use both  lt   CDATA  along with  lt    for variables  which allows you to code without worry   You basically have to terminate the CDATA tags before the VB variable and then re-add it after so the CDATA does not capture the VB code   You need to wrap the entire code block in a tag because you will you have multiple CDATA blocks   Dim script As String    lt code gt  lt   CDATA     lt script type  text javascript  gt      var URL       gt  lt    domain   gt  lt   CDATA  mypage html      lt  script gt    gt   lt  code gt  value

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Multiline string literals are introduced in Visual Basic 14 0 -  https   roslyn codeplex com discussions 571884  You can use then in the VS2015 Preview  out now - http   www visualstudio com en-us downloads visual-studio-2015-downloads-vs  note that you can still use VS2015 even when targeting an older version of the  NET framework   Dim multiline    multi line string    VB strings are basically now the same as C  verbatim strings - they don t support backslash escape sequences like  n  and they do allow newlines within the string  and you escape the quote symbol with double-quotes

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If you need an XML literal in VB Net with an line code variable  this is how you would do it    lt Tag gt  lt    New XCData T Property    gt  lt  Tag gt

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You could  should   put the string in a resource-file  e g   My Project  Resources  and then get it with   Dim a   My Resources Whatever you chose

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You can also use System Text StringBuilder class in this way   Dim sValue As New System Text StringBuilder sValue AppendLine  1st Line   sValue AppendLine  2nd Line   sValue AppendLine  3rd Line     Then you get the multiline string using   sValue ToString

[string] Multiline strings in VB.NET

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