How can I update,Insert and Delete a DataList's value at run time through ASP C#.Net?

I have a datalist where I like to manipulate the data at run time. How will I do that ? please help me through ASP.Net C#How can I update,Insert and Delete a DataList's value at run time through ASP C#.Net?
http://msdn.microsoft.com/en-us/library/6y92e1ze(VS.85).aspx