compare the month part with linq [closed]

You may not come up with this question if you read the error message carefully, since its clear enough. Anyway, you have to use == here for comparing two values, = is for assignment purpose(basic knowledge). After making this small change your query will look like the following:

var item = model.Where(d => d.DATE2.Date.Month == dto.StartDate.Month).FirstOrDefault();

You can make them even simple by using FirstOrDefault instead for Where as like this:

 var item = model.FirstOrDefault(d => d.DATE2.Date.Month == dto.StartDate.Month);