Get GridView in Multiple UserControl from codebehind

Question

IpInterfaceUC UserControl:

Answer 1

Expose the gridview through a public property on your UserControl:

public GridView Grid
{
  get { return gvChannelUC; }
}

Then

List Grids = new List(); // 
...
ctrIpInterfaceUC = (Test2.SetupGroup.Ipservice.IpInterfaceUC)LoadControl("IpInterfaceUC.ascx");
string Id = "device_"+ip+"_"+port+"$"+indexInterface;

GridView ctrGridView = ctrIpInterfaceUC.Grid;
Grids.Add(Id, ctrGridView.ClientID);

Control ctr = (Control)ctrIpInterfaceUC;
ctr.ID = Id
phDevices.Controls.Add(ctr);//PlaceHolder for add many UserControl
...