how get parent grid row index while clicking a button in Child grid

Here gvInner is the inner(child) gridview. The gvInner contains a linkbutton named Edit whose commandname is set to Edit.

protected void gvInner_RowCommand(object sender, GridViewCommandEventArgs e)
        {
            if (e.CommandName == "Edit")
            {
                GridViewRow inner = (GridViewRow)((LinkButton)e.CommandSource).NamingContainer;
                GridView child = (GridView)inner.Parent.Parent;//This returns the child gridview
                GridViewRow parent = (GridViewRow)child.NamingContainer;// this returns the row of parent gridview.
                int row = parent.RowIndex; // this returns the row index of parent gridview
            }
        }

OR

int rindex = (((GridViewRow)(((Control)(sender)).Parent.BindingContainer))).RowIndex;

In this sender returns the inner(child) and the Parent property returns the DataControlFieldCell of outer(parent) gridview and BindingContainer returns the GridviewRow of Parent gridview


Hope this solves your problem!! :)