Hi Baffelli,
To have a chart control in a grid cell, you need to use the Control cell type.
//
this.gridControl1[2, 2].CellType = "Control";
this.gridControl1[2, 2].Control = mychartControl;
this.gridControl1.Controls.Add(mychartControl);
//
Please refer this forum thread,
http://www.syncfusion.com/support/Forums/message.aspx?MessageID=28478Regards,
Rajagopal