For my project(in asp.net) i wrote near 1000 lines of c# code for one asp.net page.It includes so many functions.The problem is,it is going complicated while i am writing more codes on one page.How can i make multiple c# files for one asp.net page?? I tried by adding new class in VS2008.But calling a function from one file to other is making error(item is not present in current file).How can i do that??
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6 Answers
Partial classes will allow you to split your large class over many files. However, I would suggest that is not the ideal solution.
You could create other classes that your page uses to perform a lot of its functionality.
You could move some of the functionality into UserControls.
You could move some shared functionality into a master page and then have multiple pages to perform individual tasks.
Comments
Use partial class.
Comments
Although you can move some of your code into a separate partial class file, more likely a page that long means you should move some of your functions out of the codebehind (.aspx.cs) file into a separate code (.cs) file.
There must be some code on that page you'll find handy on others.
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The simple answer is to use Partial Classes.
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If you have code in another file just give it a namespace and include it in the original page.
I.e.
Newclass.cs
namespace myapp.functions
{
//code to include.
}
Page.aspx.cs
using myapp.functions;
// now you can use them
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While I see why everyone is suggesting using partial classes, they only provide physical separation of code in separate files. I think your problem here is not the separation of the code itself, but rather splitting your functionality in components.
If there's functionality in a page that is logically grouped together, why not extract it in an ASP.NET control, expose events in this control and have the code + functionality grouped logically? This would add a bit of more effort required, but would be much, much cleaner and easily maintained. Also, if you decide to reuse some part of the page, it would be copy-paste hell if the functionality is contained as code in a page and not a control.
