protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e) 
{ 
    if (e.Row.RowType == DataControlRowType.DataRow)
    {    
        LinkButton lb=e.Row.Cells.FindControl("LinkButton1") as LinkButton;
        Label label=e.Row.Cells.FindControl("Label1") as Label;
        if(你的逻辑判断) 
        { 
            lb.Visible=true;
            label.Visible=false;
        } 
        else 
        { 
            lb.Visible=false;
            label.Visible=true;
        }
    } 
}

------解决方案--------------------
protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
{
   LinkButton linkb = new LinkButton();
   linkb.ID = "LinkButton1";
   linkb.Text = "haha";
   if (e.Row.RowType == DataControlRowType.DataRow)
   {
       e.Row.Cells[CellIndex].Controls.Add(linkb);
   }
}

------解决方案--------------------
顶6楼

------解决方案--------------------
探讨

protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e) 
{ 
    LinkButton linkb = new LinkButton(); 
    linkb.ID = "LinkButton1"; 
    linkb.Text = "haha"; 
    if (e.Row.RowType == DataControlRowType.DataRow) 
    { 
        e.Row.Cells[CellIndex].Controls.Add(linkb); 
    } 
}