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Asked: 2026-06-05T04:13:15+00:00

public Nullable<bool> BROUGHT { get; set; } // EDMX generate this code, so I

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public Nullable<bool> BROUGHT { get; set; } // EDMX generate this code, so I can not change this

I want to null check for the BROUHGT (DB) column.

so I write code like

if (table.BROUGHT != DBNull.Value && Convert.ToBoolean(table.BROUGHT)){..}

but the error message say,

Error   2   Operator '!=' cannot be applied to operands of type 'bool?' and 'System.DBNull' ...

How I null check for that column?

Thank you!

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1 Answer

  1. Editorial Team

    Entity Framework is an ORM, and it’s shiedling you from having to think about DBNull.Value. So just check against null like you would in other C# code:

    if (table.BROUGHT != null && table.BROUGHT.Value){..}

    Not that since it’s a nullable type, to get the actual bool value you have to either use the .Value property (as above) or cast it to a bool.

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