Question

I have an ASP.NET webform where I initialize an array with a list of controls on the page like this

FileUpload[4] = new FileUpload[4];
public myclass()
{
 fileUpload[0] = FileUpload1;
 fileUpload[0] = FileUpload2;
...etc
}

I then use these in the page load and they are all null. This seems a strange behavior to me. Can someone elaborate and explain? I can understand that they are null in the constructor but why should they be null when used in the page load.

Answer 1

They are null because the controls haven’t been created yet.

Take a look at the ASP.NET Page Life Cycle Overview and the Init event.