动态加载用户控件并访问其公共属性和方法

if(!Page.IsPostBack)
{
Control ctl = Page.LoadControl("LmControl\\Left2.ascx");
LmControl.Left2 left = (LmControl.Left2)ctl;
left.showId = "2";
left.bmId = "2";
Page.Controls.Add(ctl);
}
在Left2.ascx用户控作中定义了showId,bmId属性
private string showid;
private string bmid;
public string showId
{
set
{
showid = value;
}
}
public string bmId
{
set
{
bmid = value;
}
}