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?
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;}