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Hi All,


How to paas a null value in double variable e.g.


Double abc=null;
or Double abc="";


thanks

mohd wasif
Posted 27-Jun-12 1:13am
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Solution 2

Use Nullable Types if you want to assign NULL.

For example:
int? i = 10;
double? d1 = 3.14;
bool? flag = null;
char? letter = 'a';

For more information on Nullable Types look into following links:
http://www.blackwasp.co.uk/CSharpNullableDataTypes.aspx[^]
http://www.codeguru.com/csharp/csharp/cs_syntax/operators/article.php/c10393/Using-Nullable-Types-in-C.htm[^]
http://msdn.microsoft.com/en-us/library/2cf62fcy.aspx[^]
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Comments
Rahul Rajat Singh 27-Jun-12 6:43am
   
good answer. +5.
Vani Kulkarni 27-Jun-12 6:47am
   
Thanks Rahul!
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Solution 3

double is a value type. value types dont really have null values. but you can have nullable double by using this syntax.

Nullable<Double> d = null;

this will work same as a double. try using it. Just remember nullable types are immutable. but since you are using double it wont be a big problem for you.

P.S. the shorthand of what i just told you is like

Double? d = null;

it means the same. just a syntactic sugar for the first one.
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