Web Forms :: Nhibernate Association / Not Set To An Instance Of Object At The Line "category.Products.Add(product);"

Apr 19, 2010

I am using nhibernate and performing one to many relation,

i have a parent table "Category" and child table as "product"

this is my code,

category.CategoryID = txtcategoryid.text;
category.CategoryName = txtName.Text;
category.CategoryDescription = txtDescription.Text;
product.CategoryID = category;
product.ProductName = txtProductName.Text;
product.ProductID = txtProductID.Text;
product.ProductDescription = txtProductDescription.Text;
category.Products.Add(product);
DAO.CanAddCategory(category);

but it throws exception, object reference not set to an instance of object at the line "category.Products.Add(product);"

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