Hi Pete,

Well, first of all, you have to be careful about changing designer-generated code. It will most likely get overwritten.

Next, is your error about converting "MyDataGridViewTextBoxColumn to MyDataGridViewColumn" or "MyDataGridViewTextBoxColumn to DataGridViewColumn "?

What have you sub-classed your MyDataGridViewTextBoxColumn from?

~~Bonnie




>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
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>

>cannot implicitly convert type MyDataGridViewTextBoxColumn to MyDataGridViewColumn 
>

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