C# Static cast char to string











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I am trying to declare a constant char to hold a key and a constant string to hold a message telling the user to press the key:



...
private const KEY = 'r';
private const string MSG = "Press " + KEY + " to restart.";
...


I need to explicitly cast the key char to a string since the implicit cast is done during runtime. However, I can't figure out the way to cast a character to a string at compile time. I've seen ToString () on the internet, but it's performed at runtime and therefore doesn't work. I have the key char as a separate variable because it is used several times in the program. Does anybody know how to statically cast a char to a string?










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    up vote
    2
    down vote

    favorite












    I am trying to declare a constant char to hold a key and a constant string to hold a message telling the user to press the key:



    ...
    private const KEY = 'r';
    private const string MSG = "Press " + KEY + " to restart.";
    ...


    I need to explicitly cast the key char to a string since the implicit cast is done during runtime. However, I can't figure out the way to cast a character to a string at compile time. I've seen ToString () on the internet, but it's performed at runtime and therefore doesn't work. I have the key char as a separate variable because it is used several times in the program. Does anybody know how to statically cast a char to a string?










    share|improve this question
























      up vote
      2
      down vote

      favorite









      up vote
      2
      down vote

      favorite











      I am trying to declare a constant char to hold a key and a constant string to hold a message telling the user to press the key:



      ...
      private const KEY = 'r';
      private const string MSG = "Press " + KEY + " to restart.";
      ...


      I need to explicitly cast the key char to a string since the implicit cast is done during runtime. However, I can't figure out the way to cast a character to a string at compile time. I've seen ToString () on the internet, but it's performed at runtime and therefore doesn't work. I have the key char as a separate variable because it is used several times in the program. Does anybody know how to statically cast a char to a string?










      share|improve this question













      I am trying to declare a constant char to hold a key and a constant string to hold a message telling the user to press the key:



      ...
      private const KEY = 'r';
      private const string MSG = "Press " + KEY + " to restart.";
      ...


      I need to explicitly cast the key char to a string since the implicit cast is done during runtime. However, I can't figure out the way to cast a character to a string at compile time. I've seen ToString () on the internet, but it's performed at runtime and therefore doesn't work. I have the key char as a separate variable because it is used several times in the program. Does anybody know how to statically cast a char to a string?







      c# string type-conversion character string-concatenation






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      asked Nov 11 at 2:30









      Andrew Pratt

      254




      254
























          2 Answers
          2






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          oldest

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          up vote
          1
          down vote



          accepted










          The short answer is that you can't compose a string with anything other than string fragments.



          You have a few options though. You can make both constants string types:



          private const string KEY = "r";
          private const string MSG = "Press " + KEY + " to restart.";


          Another option would be to compose the string at runtime:



          private const char KEY = 'r';
          private static string MSG => "Press " + KEY + " to restart.";





          share|improve this answer





















          • Thanks, I wanted to avoid this initially, but I ended up needing it converted to a string every time I needed it, so it makes sense to store it as a string
            – Andrew Pratt
            Nov 11 at 3:39


















          up vote
          1
          down vote













          You can't const string with other values which is const.



          You can try to use readonly.



          readonly can only modify values ​in the class constructor method, it will set that value at runtime.



          private const char KEY = 'r';
          private readonly string MSG = "Press " + KEY + " to restart.";





          share|improve this answer























          • Thank you, that would work, but I'm going with davidg's suggestion to change the char to be a string because I ended up only ever needing it as a string. I'll be sure to remember both ways in the future though
            – Andrew Pratt
            Nov 11 at 3:41











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          2 Answers
          2






          active

          oldest

          votes








          2 Answers
          2






          active

          oldest

          votes









          active

          oldest

          votes






          active

          oldest

          votes








          up vote
          1
          down vote



          accepted










          The short answer is that you can't compose a string with anything other than string fragments.



          You have a few options though. You can make both constants string types:



          private const string KEY = "r";
          private const string MSG = "Press " + KEY + " to restart.";


          Another option would be to compose the string at runtime:



          private const char KEY = 'r';
          private static string MSG => "Press " + KEY + " to restart.";





          share|improve this answer





















          • Thanks, I wanted to avoid this initially, but I ended up needing it converted to a string every time I needed it, so it makes sense to store it as a string
            – Andrew Pratt
            Nov 11 at 3:39















          up vote
          1
          down vote



          accepted










          The short answer is that you can't compose a string with anything other than string fragments.



          You have a few options though. You can make both constants string types:



          private const string KEY = "r";
          private const string MSG = "Press " + KEY + " to restart.";


          Another option would be to compose the string at runtime:



          private const char KEY = 'r';
          private static string MSG => "Press " + KEY + " to restart.";





          share|improve this answer





















          • Thanks, I wanted to avoid this initially, but I ended up needing it converted to a string every time I needed it, so it makes sense to store it as a string
            – Andrew Pratt
            Nov 11 at 3:39













          up vote
          1
          down vote



          accepted







          up vote
          1
          down vote



          accepted






          The short answer is that you can't compose a string with anything other than string fragments.



          You have a few options though. You can make both constants string types:



          private const string KEY = "r";
          private const string MSG = "Press " + KEY + " to restart.";


          Another option would be to compose the string at runtime:



          private const char KEY = 'r';
          private static string MSG => "Press " + KEY + " to restart.";





          share|improve this answer












          The short answer is that you can't compose a string with anything other than string fragments.



          You have a few options though. You can make both constants string types:



          private const string KEY = "r";
          private const string MSG = "Press " + KEY + " to restart.";


          Another option would be to compose the string at runtime:



          private const char KEY = 'r';
          private static string MSG => "Press " + KEY + " to restart.";






          share|improve this answer












          share|improve this answer



          share|improve this answer










          answered Nov 11 at 2:43









          DavidG

          67.1k9106122




          67.1k9106122












          • Thanks, I wanted to avoid this initially, but I ended up needing it converted to a string every time I needed it, so it makes sense to store it as a string
            – Andrew Pratt
            Nov 11 at 3:39


















          • Thanks, I wanted to avoid this initially, but I ended up needing it converted to a string every time I needed it, so it makes sense to store it as a string
            – Andrew Pratt
            Nov 11 at 3:39
















          Thanks, I wanted to avoid this initially, but I ended up needing it converted to a string every time I needed it, so it makes sense to store it as a string
          – Andrew Pratt
          Nov 11 at 3:39




          Thanks, I wanted to avoid this initially, but I ended up needing it converted to a string every time I needed it, so it makes sense to store it as a string
          – Andrew Pratt
          Nov 11 at 3:39












          up vote
          1
          down vote













          You can't const string with other values which is const.



          You can try to use readonly.



          readonly can only modify values ​in the class constructor method, it will set that value at runtime.



          private const char KEY = 'r';
          private readonly string MSG = "Press " + KEY + " to restart.";





          share|improve this answer























          • Thank you, that would work, but I'm going with davidg's suggestion to change the char to be a string because I ended up only ever needing it as a string. I'll be sure to remember both ways in the future though
            – Andrew Pratt
            Nov 11 at 3:41















          up vote
          1
          down vote













          You can't const string with other values which is const.



          You can try to use readonly.



          readonly can only modify values ​in the class constructor method, it will set that value at runtime.



          private const char KEY = 'r';
          private readonly string MSG = "Press " + KEY + " to restart.";





          share|improve this answer























          • Thank you, that would work, but I'm going with davidg's suggestion to change the char to be a string because I ended up only ever needing it as a string. I'll be sure to remember both ways in the future though
            – Andrew Pratt
            Nov 11 at 3:41













          up vote
          1
          down vote










          up vote
          1
          down vote









          You can't const string with other values which is const.



          You can try to use readonly.



          readonly can only modify values ​in the class constructor method, it will set that value at runtime.



          private const char KEY = 'r';
          private readonly string MSG = "Press " + KEY + " to restart.";





          share|improve this answer














          You can't const string with other values which is const.



          You can try to use readonly.



          readonly can only modify values ​in the class constructor method, it will set that value at runtime.



          private const char KEY = 'r';
          private readonly string MSG = "Press " + KEY + " to restart.";






          share|improve this answer














          share|improve this answer



          share|improve this answer








          edited Nov 11 at 3:09

























          answered Nov 11 at 3:00









          D-Shih

          24.4k61431




          24.4k61431












          • Thank you, that would work, but I'm going with davidg's suggestion to change the char to be a string because I ended up only ever needing it as a string. I'll be sure to remember both ways in the future though
            – Andrew Pratt
            Nov 11 at 3:41


















          • Thank you, that would work, but I'm going with davidg's suggestion to change the char to be a string because I ended up only ever needing it as a string. I'll be sure to remember both ways in the future though
            – Andrew Pratt
            Nov 11 at 3:41
















          Thank you, that would work, but I'm going with davidg's suggestion to change the char to be a string because I ended up only ever needing it as a string. I'll be sure to remember both ways in the future though
          – Andrew Pratt
          Nov 11 at 3:41




          Thank you, that would work, but I'm going with davidg's suggestion to change the char to be a string because I ended up only ever needing it as a string. I'll be sure to remember both ways in the future though
          – Andrew Pratt
          Nov 11 at 3:41


















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