How to find out if a numeric type is signed or unsigned in C#












2














I want to know details about the type of a field by reflection.



I know I can find out that it is a value type with Type.IsValueType. But from there how do I know it is a number? A fixed point number? Signed or unsigned??



Is there anything like Type.IsSigned?






c# reflection







share|improve this question




















  • 2




    What do you mean by "unknown"? Is it dynamic? Is it an object? Elaborate please.
    – rory.ap
    Nov 14 '18 at 12:22








  • 1




    You'll have to compare the type with all the CLR's signed types to see if it's one of them.
    – Matthew Watson
    Nov 14 '18 at 12:23








  • 1




    You probably do something like 1if typeof(myVar) == typeof(int)), or if (myvar is ulong)`...
    – ATC
    Nov 14 '18 at 12:23










  • @rory.ap: the algorithm does not know which class it will be working on, therefore I must use reflection - I rephrased out that "unknown"
    – Stefan Bormann
    Nov 14 '18 at 12:36
















2














I want to know details about the type of a field by reflection.



I know I can find out that it is a value type with Type.IsValueType. But from there how do I know it is a number? A fixed point number? Signed or unsigned??



Is there anything like Type.IsSigned?






c# reflection







share|improve this question




















  • 2




    What do you mean by "unknown"? Is it dynamic? Is it an object? Elaborate please.
    – rory.ap
    Nov 14 '18 at 12:22








  • 1




    You'll have to compare the type with all the CLR's signed types to see if it's one of them.
    – Matthew Watson
    Nov 14 '18 at 12:23








  • 1




    You probably do something like 1if typeof(myVar) == typeof(int)), or if (myvar is ulong)`...
    – ATC
    Nov 14 '18 at 12:23










  • @rory.ap: the algorithm does not know which class it will be working on, therefore I must use reflection - I rephrased out that "unknown"
    – Stefan Bormann
    Nov 14 '18 at 12:36














2












2








2







I want to know details about the type of a field by reflection.



I know I can find out that it is a value type with Type.IsValueType. But from there how do I know it is a number? A fixed point number? Signed or unsigned??



Is there anything like Type.IsSigned?






c# reflection







share|improve this question















I want to know details about the type of a field by reflection.



I know I can find out that it is a value type with Type.IsValueType. But from there how do I know it is a number? A fixed point number? Signed or unsigned??



Is there anything like Type.IsSigned?






c# reflection




c# reflection






share|improve this question















share|improve this question













share|improve this question




share|improve this question








edited Nov 14 '18 at 12:34

























asked Nov 14 '18 at 12:20









Stefan Bormann

376216




376216








  • 2




    What do you mean by "unknown"? Is it dynamic? Is it an object? Elaborate please.
    – rory.ap
    Nov 14 '18 at 12:22








  • 1




    You'll have to compare the type with all the CLR's signed types to see if it's one of them.
    – Matthew Watson
    Nov 14 '18 at 12:23








  • 1




    You probably do something like 1if typeof(myVar) == typeof(int)), or if (myvar is ulong)`...
    – ATC
    Nov 14 '18 at 12:23










  • @rory.ap: the algorithm does not know which class it will be working on, therefore I must use reflection - I rephrased out that "unknown"
    – Stefan Bormann
    Nov 14 '18 at 12:36














  • 2




    What do you mean by "unknown"? Is it dynamic? Is it an object? Elaborate please.
    – rory.ap
    Nov 14 '18 at 12:22








  • 1




    You'll have to compare the type with all the CLR's signed types to see if it's one of them.
    – Matthew Watson
    Nov 14 '18 at 12:23








  • 1




    You probably do something like 1if typeof(myVar) == typeof(int)), or if (myvar is ulong)`...
    – ATC
    Nov 14 '18 at 12:23










  • @rory.ap: the algorithm does not know which class it will be working on, therefore I must use reflection - I rephrased out that "unknown"
    – Stefan Bormann
    Nov 14 '18 at 12:36








2




2




What do you mean by "unknown"? Is it dynamic? Is it an object? Elaborate please.
– rory.ap
Nov 14 '18 at 12:22






What do you mean by "unknown"? Is it dynamic? Is it an object? Elaborate please.
– rory.ap
Nov 14 '18 at 12:22






1




1




You'll have to compare the type with all the CLR's signed types to see if it's one of them.
– Matthew Watson
Nov 14 '18 at 12:23






You'll have to compare the type with all the CLR's signed types to see if it's one of them.
– Matthew Watson
Nov 14 '18 at 12:23






1




1




You probably do something like 1if typeof(myVar) == typeof(int)), or if (myvar is ulong)`...
– ATC
Nov 14 '18 at 12:23




You probably do something like 1if typeof(myVar) == typeof(int)), or if (myvar is ulong)`...
– ATC
Nov 14 '18 at 12:23












@rory.ap: the algorithm does not know which class it will be working on, therefore I must use reflection - I rephrased out that "unknown"
– Stefan Bormann
Nov 14 '18 at 12:36




@rory.ap: the algorithm does not know which class it will be working on, therefore I must use reflection - I rephrased out that "unknown"
– Stefan Bormann
Nov 14 '18 at 12:36












1 Answer
1






active

oldest

votes


















6














There aren't that many numeric types that are unsigned, so why not compose a list of that:



if (new Type { typeof(ushort), typeof(uint), typeof(ulong), typeof(byte) }.Contains(type))

{

    // unsigned.

}


Or if you just want to compare the value (here o):



if (o is ushort || o is uint || o is ulong || o is byte)

{

    // unsigned.

}





share|improve this answer























  • Well, thanks. That explicit list of types was my first thought, just hoped there would be a more elegant solution...
    – Stefan Bormann
    Nov 14 '18 at 12:40











Your Answer






StackExchange.ifUsing("editor", function () {
StackExchange.using("externalEditor", function () {
StackExchange.using("snippets", function () {
StackExchange.snippets.init();
});
});
}, "code-snippets");

StackExchange.ready(function() {
var channelOptions = {
tags: "".split(" "),
id: "1"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);

StackExchange.using("externalEditor", function() {
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled) {
StackExchange.using("snippets", function() {
createEditor();
});
}
else {
createEditor();
}
});

function createEditor() {
StackExchange.prepareEditor({
heartbeatType: 'answer',
autoActivateHeartbeat: false,
convertImagesToLinks: true,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: 10,
bindNavPrevention: true,
postfix: "",
imageUploader: {
brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
allowUrls: true
},
onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
});


}
});














draft saved

draft discarded


















StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53300136%2fhow-to-find-out-if-a-numeric-type-is-signed-or-unsigned-in-c-sharp%23new-answer', 'question_page');
}
);

Post as a guest















Required, but never shown

























1 Answer
1






active

oldest

votes








1 Answer
1






active

oldest

votes









active

oldest

votes






active

oldest

votes









6














There aren't that many numeric types that are unsigned, so why not compose a list of that:



if (new Type { typeof(ushort), typeof(uint), typeof(ulong), typeof(byte) }.Contains(type))

{

    // unsigned.

}


Or if you just want to compare the value (here o):



if (o is ushort || o is uint || o is ulong || o is byte)

{

    // unsigned.

}





share|improve this answer























  • Well, thanks. That explicit list of types was my first thought, just hoped there would be a more elegant solution...
    – Stefan Bormann
    Nov 14 '18 at 12:40
















6














There aren't that many numeric types that are unsigned, so why not compose a list of that:



if (new Type { typeof(ushort), typeof(uint), typeof(ulong), typeof(byte) }.Contains(type))

{

    // unsigned.

}


Or if you just want to compare the value (here o):



if (o is ushort || o is uint || o is ulong || o is byte)

{

    // unsigned.

}





share|improve this answer























  • Well, thanks. That explicit list of types was my first thought, just hoped there would be a more elegant solution...
    – Stefan Bormann
    Nov 14 '18 at 12:40














6












6








6






There aren't that many numeric types that are unsigned, so why not compose a list of that:



if (new Type { typeof(ushort), typeof(uint), typeof(ulong), typeof(byte) }.Contains(type))

{

    // unsigned.

}


Or if you just want to compare the value (here o):



if (o is ushort || o is uint || o is ulong || o is byte)

{

    // unsigned.

}





share|improve this answer














There aren't that many numeric types that are unsigned, so why not compose a list of that:



if (new Type { typeof(ushort), typeof(uint), typeof(ulong), typeof(byte) }.Contains(type))

{

    // unsigned.

}


Or if you just want to compare the value (here o):



if (o is ushort || o is uint || o is ulong || o is byte)

{

    // unsigned.

}






share|improve this answer














share|improve this answer



share|improve this answer








edited Nov 14 '18 at 12:24

























answered Nov 14 '18 at 12:23









Patrick Hofman

126k18170224




126k18170224












  • Well, thanks. That explicit list of types was my first thought, just hoped there would be a more elegant solution...
    – Stefan Bormann
    Nov 14 '18 at 12:40


















  • Well, thanks. That explicit list of types was my first thought, just hoped there would be a more elegant solution...
    – Stefan Bormann
    Nov 14 '18 at 12:40
















Well, thanks. That explicit list of types was my first thought, just hoped there would be a more elegant solution...
– Stefan Bormann
Nov 14 '18 at 12:40




Well, thanks. That explicit list of types was my first thought, just hoped there would be a more elegant solution...
– Stefan Bormann
Nov 14 '18 at 12:40


















draft saved

draft discarded




















































Thanks for contributing an answer to Stack Overflow!


  • Please be sure to answer the question. Provide details and share your research!

But avoid …



  • Asking for help, clarification, or responding to other answers.

  • Making statements based on opinion; back them up with references or personal experience.


To learn more, see our tips on writing great answers.





Some of your past answers have not been well-received, and you're in danger of being blocked from answering.


Please pay close attention to the following guidance:


  • Please be sure to answer the question. Provide details and share your research!

But avoid …



  • Asking for help, clarification, or responding to other answers.

  • Making statements based on opinion; back them up with references or personal experience.


To learn more, see our tips on writing great answers.




draft saved


draft discarded














StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53300136%2fhow-to-find-out-if-a-numeric-type-is-signed-or-unsigned-in-c-sharp%23new-answer', 'question_page');
}
);

Post as a guest















Required, but never shown





















































Required, but never shown














Required, but never shown












Required, but never shown







Required, but never shown

































Required, but never shown














Required, but never shown












Required, but never shown







Required, but never shown







-

Popular posts from this blog

Guess what letter conforming each word

Image
6 $begingroup$ This is an entry in the Fortnightly Topic Challenge #41: Short and Sweet. 1 letter only could be mean anything . With an additional letter in front , could be used as medicine component and something you definitely learn or at least heard once. Add another letter in front , you would possibly hear that many times . Add an additional letter in front , you would found an independent country . With an additional letter, in the end , you would found something related to apple . Add another letter in the end , you would found something bad . Hint: Each letter is unique . word knowledge letters chemistry share | improve this question ...
Read more

Port of Spain

Image
For ports in the country of Spain, see List of ports in Spain. City in City of Port of Spain, Trinidad and Tobago Port of Spain City City of Port of Spain Top to bottom (left to right): Skyline of Port of Spain from Gulf of Paria; National Academy for the Performing Arts, Independence Square, Eric Williams Plaza; MovieTowne, Port of Port of Spain Motto(s):  "We Gather Strength As We Go Along" Port of Spain Coordinates: 10°40′N 61°31′W  /  10.667°N 61.517°W  / 10.667; -61.517 Coordinates: 10°40′N 61°31′W  /  10.667°N 61.517°W  / 10.667; -61.517 Country   Trinidad and Tobago Jurisdiction City of Port of Spain Settled 1560 Incorporated (town) 1853 Incorporated (city) 1914 Government  • Mayor Joel Martinez  • Governing body City Corporation Area [1]  • City 12 km 2 (5 sq mi) Elevation [2] 66 m (217 ft) Population (2011) [1]  • City 37,074  • Rank 3rd  • Density 3,090/km 2 (8,000/sq mi)...
Read more

Run scheduled task as local user group (not BUILTIN)

Image
0 I am trying to run a scheduled task with User Group (not a single user). This is working fine when I in the field "when running a task, use the following user account:" insert BUILTIN User Group (for example: Administrators or Users). But when I try it with the created Local User Group (example: TestGroup) it is not working. The Users in the TestGroup are the same as in the Administrators group. What could be the problem? Are there some restrictions to the Created User Group compared to BUILTINUsers? scheduled-tasks taskscheduler windowstaskschedule share | improve this question asked Nov 15 '18 at 15:36 Far...
Read more