How to hide column of DataGridView when using custom DataSource?

Question

I have a small app in c#, it has a DataGridView that gets filled using:

grid.DataSource = MyDatasource array;

MyClass hold the structure for the columns, it looks something like this:

class MyDatasource {     private string column1;             private string column2;      public MyDatasource(string arg1, string arg2)     {         this.column1 = arg1;         this.column2 = arg2;     }      public string column1     {         get         {             return this.column1;         }         set         {             this.column1 = value;         }     }      public string column2     {         get         {             return this.column2;         }         set         {             this.column1 = value;         }     } } 

Everything works fine and the DataGridView gets populated with the correct data, but now I want to hide the column2. I tried adding [Browsable(false)] above the column declaration, that will hide it, but I also need to access the column value from code, and when I use [Browsable(false)] and try to read the content it acts like if the column doesn't exist. If I don't use it I can read the column without problem but it's visible in the DataGridView.

How could I hide the column but still be able to read its content from code?

Answer 1

In some cases, it might be a bad idea to first add the column to the DataGridView and then hide it.

I for example have a class that has an NHibernate proxy for an Image property for company logos. If I accessed that property (e.g. by calling its ToString method to show that in a DataGridView), it would download the image from the SQL server. If I had a list of Company objects and used that as the dataSource of the DataGridView like that, then (I suspect) it would download ALL the logos BEFORE I could hide the column.

To prevent this, I used the custom attribute

 [System.ComponentModel.Browsable(false)] 

on the image property, so that the DataGridView ignores the property (doesn't create the column and doesn't call the ToString methods).

 public class Company  {      ...      [System.ComponentModel.Browsable(false)]      virtual public MyImageClass Logo { get; set;}