Hi All, I recently subclassed some of the commonly used DataGridView (dgv from here on ) controls and duly modifed my app code to utilise them, all went as expected until I got to adding the columns as an array of DataGridViewColumns.

The form designer generated code looked like this

this.dgvBlocks.Columns.AddRange(new System.Windows.Forms.DataGridViewColumn[] { column1,column2 })

So, I duly changed System.Windows.Forms.DataGridViewColumn[] to my subclass , I then received this compiler error

cannot implicitly convert type MyDataGridViewTextBoxColumn to MyDataGridViewColumn 

But if I use the designer code it works ! Any ideas ?