Question

I’m creating a WinForm application in C# and one of its functions is displaying text in text boxes. I’m coding the logic for querying a database in a separate class and am unable to access the text box element in the class I’m creating (I’m getting a “name” does not exist in the current context error). Do I put all of my form logic into my Form1.cs file?

Answer 1

You should try to keep your display logic separate from the rest of the application – the simplest thing to do is have the form class handle getting/setting form values. This means your data access component will query the database and the form will have to map the output to something that can be displayed e.g.

public class Form1 : Form
{
    public DataAccess Db { get; set; }

    public void UpdateSomething()
    {
        this.textbox.Text = this.Db.GetSomeDatabaseValue();
    }
}