I am feeling really happy that you got the answer

For primitive types,we have fixed memory size i.e for int we have 4 bytes and char we have 2 bytes. And null is used only for objects because there memory size is not fixed. So by default we have, int a=0; and not int a=null; Same with other primitive types and hence null is only used for objects and not for primitive types.

You can't directly assign null value to any int, float or long datatype variable. To assigning null value you need to declare a special type of variable that is called nullable type. This type of variable is declared with ? symbol. float? num1 = null; long? num2 = null; int? num3 = 250; Remember you need to assign always the defaul value to nullable type variable as you can't declare it as float? num1;

Hi ,In this situation you will have to use always nullable of thw variable.

thankf for ur reply i fixed my error by using ? non-nullable type public float ? copay { get;set;}

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how to set null values for float and long datatypes

Mohana R

it showing error

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