How to get values from a table in entity framework?

Question

In InsertData class, I want to get values from Combobox cbxCategory but I can't get because dshang.tblCategory is a table.

The error like:

Cannot implicitly convert type 'string' to 'EntityObject.tblCategory'(this is a table)

Category dshang = new Category();
string category = cbxCategory.SelectedValue.ToString();
dshang.tblCategory = category;

In the Entity data model, I define it's a table. So, I can't get this values from this.

public partial class ListProduct
{
    public virtual tblCategory  tblCategory { get; set; }
}

And here contain class define table tblPhanLoai:

public partial class tblCategory 
{
    public tblCategory()
    {
        this.ListProducts = new HashSet<ListProduct>();
    }

    public string ID { get; set; }
    public string Description { get; set; }
    public string DonViTinh { get; set; }

    public virtual ICollection<ListProduct> ListProducts { get; set; }
}

Answer 1

You are assigning a simple string to an object...