How to paas a null value in double variable

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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 0:13am

Mohd Wasif

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Vani Kulkarni · Answer 1 · 2012-06-27T00:17:00

Use Nullable Types if you want to assign NULL.

For example:

C#

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[^]

Rahul Rajat Singh · Answer 2 · 2012-06-27T00:31:00

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

C#

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

C#

Double? d = null;

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

How to paas a null value in double variable

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