Declare and assign multiple string variables at the same time

Question

I m declaring some strings that are empty  so it won t throw errors later on   I ve read that this was the proper way   string Camnr   Klantnr   Ordernr   Bonnr   Volgnr   Omschrijving   Startdatum   Bonprioriteit   Matsoort   Dikte   Draaibaarheid   Draaiomschrijving   Orderleverdatum   Regeltaakkode   Gebruiksvoorkeur   Regelcamprog   Regeltijd   Orderrelease         But that doesn t work  I get this error  Klantnr does not exist in the current context   What did I do wrong

User · Answer

An example of what I call Concatenated-declarations:

string Camnr = "",
        Klantnr = "",
        Ordernr = "",
        Bonnr = "",
        Volgnr = "",
        Omschrijving = "",
        Startdatum = "",
        Bonprioriteit = "",
        Matsoort = "",
        Dikte = "",
        Draaibaarheid = "",
        Draaiomschrijving = "",
        Orderleverdatum = "",
        Regeltaakkode = "",
        Gebruiksvoorkeur = "",
        Regelcamprog = "",
        Regeltijd = "",
        Orderrelease = "";

Just my 2 cents, hope it helps someone somewhere.

User · Answer

All the information is in the existing answers  but I personally wished for a concise summary  so here s an attempt at it  the commands use int variables for brevity  but they apply analogously to any type  including string   To declare multiple variables and    either  initialize them each    int i   0  j   1     declare and initialize each   var  is NOT supported as of C  8 0    or  initialize them all to the same value    int i  j         declare  first   var  is NOT supported  i   j   42      then  initialize       Single-statement alternative that is perhaps visually less obvious     Initialize the first variable with the desired value  then use     the first variable to initialize the remaining ones  int i   42  j   i  k   i      What doesn t work    You cannot use var in the above statements  because var only works with  a  a declaration that has an initialization value  from which the type can be inferred   and  b   as of C  8 0  if that declaration is the only one in the statement  otherwise you ll get compilation error error CS0819  Implicitly-typed variables cannot have multiple declarators   Placing an initialization value only after the last variable in a multiple-declarations statement initializes the last variable only   int i  j   1    initializes  only  j

User · Answer

string Camnr   Klantnr   Ordernr   Bonnr   Volgnr   Omschrijving   Startdatum   Bonprioriteit   Matsoort   Dikte   Draaibaarheid   Draaiomschrijving   Orderleverdatum   Regeltaakkode   Gebruiksvoorkeur   Regelcamprog   Regeltijd   Orderrelease  Camnr   Klantnr   Ordernr   Bonnr   Volgnr   Omschrijving   Startdatum   Bonprioriteit   Matsoort   Dikte   Draaibaarheid   Draaiomschrijving   Orderleverdatum   Regeltaakkode   Gebruiksvoorkeur   Regelcamprog   Regeltijd   Orderrelease   string Empty

User · Answer

Fairly old question but incase someone goes back  This isn t as compact as the other answers above  but fairly readable and easier to type using Visual Studio Multi-Line selection shortcut  Alt  Shift       or other directions   string Camnr   string Empty  string Klantnr   string Empty    Type out all variable names on new lines  Multi-Select in front of them an type  string   Multi-Select behind them and type    string Empty

User · Answer

string a       b   a   c   a  d   a  e   a  f  a

User · Answer

You can to do it this way    string Camnr       Klantnr              or String Empty   Or you could declare them all first and then in the next line use your way

User · Answer

Just a reminder  Implicit type var in multiple declaration is not allowed  There might be the following compilation errors   var Foo   0  Bar   0       Implicitly-typed variables cannot have multiple declarators   Similarly   var Foo  Bar       Implicitly-typed variables must be initialized

User · Answer

Try with    string Camnr  Klantnr  Ordernr  Bonnr  Volgnr  Omschrijving   Camnr   Klantnr   Ordernr   Bonnr   Volgnr   Omschrijving   string Empty

User · Answer

Try  string     Camnr   Klantnr   Ordernr   Bonnr   Volgnr   Omschrijving   Startdatum      Bonprioriteit   Matsoort   Dikte   Draaibaarheid   Draaiomschrijving   Orderleverdatum   Regeltaakkode   Gebruiksvoorkeur   Regelcamprog   Regeltijd   Orderrelease     and then  Camnr   Klantnr   Ordernr   Bonnr   Volgnr   Omschrijving   Startdatum   Bonprioriteit   Matsoort   Dikte   Draaibaarheid   Draaiomschrijving   Orderleverdatum   Regeltaakkode   Gebruiksvoorkeur   Regelcamprog   Regeltijd   Orderrelease

User · Answer

You can do it like   string Camnr  Klantnr  Ordernr  Bonnr  Volgnr    and so on  Camnr   Klantnr   Ordernr   Bonnr   Volgnr   string Empty    First you have to define the variables and then you can use them

[c#] Declare and assign multiple string variables at the same time

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