public class MYCommandColumn : GridViewCommandColumn
{
    public MYCommandColumn(string fieldName) : base(fieldName)
    {
    }

    public override Type GetCellType(GridViewRowInfo row)
    {
        if (row is GridViewDataRowInfo)
        {
            return typeof(MyCommandCell);
        }
        return base.GetCellType(row);
    }
}

public class MyCommandCell : GridCommandCellElement
{
    public MyCommandCell(GridViewColumn column, GridRowElement row) : base(column, row)
    {
    }

    protected override Type ThemeEffectiveType
    {
        get
        {
            return typeof(GridCommandCellElement);
        }
    }

    public override bool IsCompatible(GridViewColumn data, object context)
    {
        return data is MYCommandColumn && context is GridDataRowElement;
    }

    // Alternative implementation that bypasses GridCommandCellElement's IsCurrent setter
    public override bool IsCurrent
    {
        get
        {
            return (bool)this.GetValue(IsCurrentProperty);
        }
        set
        {
            this.SetValue(IsCurrentProperty, value);
        }
    }
}

MYCommandColumn myCommandColumn = new MYCommandColumn("Command");
this.radGridView1.MasterTemplate.Columns.Add(myCommandColumn);