Question

I am using the following two methods to persist column information about a DataGridView and a ListView.

I notice the methods are very similar and in fact I use the same data structure to store the column settings in. The properties I am storing for each column are things like, Visible, Width, DisplayIndex

How can I re-write this so I have a single function that can handle a DataGridView or a ListView?

I have thought about investigating whether both DataGridView and ListView inherit from a common class or implement a common interface – but I am not sure how to find this out.

Also I have thought about extending each class to implement a common interface… but I am not sure how to proceed.

 public void SaveDataGridView ( DataGridView view)
 {
      foreach (DataGridViewColumn col in view.Columns)
      {
           // save properties     
      }
 }

 public void SaveDataListView(ListView view)
 {
      foreach (ColumnHeader col in view.Columns)
      {
           // save properties   
      }
 }

Answer 1

No way until use dynamic keyword what will not increase the performance.

DataGridView.Columns and ListView.Columns have no common base type (except IList, try but I doubt about any luck). Neither ColumnHeader and DataGridViewColumn have too.