如何在页面加载后面的代码中设置ASP.NET标签文本？

I can't seem to find an answer out there for this. Here's the scenario: I have an ASP.NET project using C#. I'm loading data (Username, email, etc...) from a sqlite database with C# (using ADO). I'll be loading the data into static Global variables in a class file in my App_Data folder. I need to be able to insert the username into an ASP.NET Label on a page during load.I can't seem to find an answer out there for th