c# - NullReferenceException: Object reference not set to an instance of an object in code first entity framework class -

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this question has answer here:

public decimal total  {      { return quantity * pricelist.price; }     set { total = value; } }

you need change logic:

public decimal total  {       { return quantity * (pricelist == null ? 0 : pricelist.price);}       set { total = value; } }

total 0 if pricelist null. may want change logic, example, if pricelist null total should null too? changr total type decimal? , return null in case.

edit: assuming here price property "pricelist" non nullable. if nullable, take note of comments made below.


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