Accessing a Control

Question

I am doing some of my first GUI C# programming. I have a program.cs and a form.cs code files. I have a refreshData() function that I want my button to call. It works if I use [code] RSSGuiVersion.Program.refreshData(); [/code] However at the end of the function I want my function access a label called currentSong and change its text. How do I do this? I've tried [code] RSSGuiVersion.Armitunes.currentSong.Text = a; [/code] And I get An object reference is required for the nonstatic field method or property 'member' For the life of me I do not know where to go next.

Alan · Answer

It sounds to me Jan as though refreshData is a static method in the Program class rather than the form class and so Alex will need a reference to his form object to access the label. Also if the currentSong label is private or protected he'll need to change it to public or internal so that it can be accessed from outside of the form. If I'm right about this Alex and you're using .NET 2.0 or 3.0 (VS 2005) then you could access the label like this: Application.OpenForms[0].currentSong.Text = whatever; If you're using .NET 1.0 or 1.1 then this won't work. Instead you could change the refreshData method so that it takes a parameter of type Armitunes like this: public static void refreshData(Armitunes armitunes) { // code armitunes.currentSong.Text = whatever; } When calling this method from the form you'd need to use: RSSGuiVersion.Program.refreshData(this);

Jan Montano · Answer

Hi Alex You just need to modify RSSGuiVersion.Armitunes.currentSong.Text = a; into currentSong.Text = a;