ASP.NET 2.0 中母版页与内容页的控件之间的访问

ASP.NET 2.0比以前版本的一个较大的改进，就是提供了母版页 。那么它与内容页之间是怎么通讯的呢，可以参照如下事例，就能够实现其功能(代码很简单，就不加注释了 源代码下载)：


using System;


using System.Data;


using System.Configuration;


using System.Collections;


using System.Web;


using System.Web.Security;


using System.Web.UI;


using System.Web.UI.WebControls;


using System.Web.UI.WebControls.WebParts;


using System.Web.UI.HtmlControls;




//Master页面


public partial class MasterPage : System.Web.UI.MasterPage




...{


protected void Page_Load(object sender, EventArgs e)




...{




}


protected void btnMaster_Click(object sender, EventArgs e)




...{


Label lbl = this.ContentPlaceHolder1.FindControl("lblContent") as Label;


Response.Write("<script language='javascript'>alert('" + lbl.Text + "');</script>");


}


}

内容页面如下：


using System;


using System.Data;


using System.Configuration;


using System.Collections;


using System.Web;


using System.Web.Security;


using System.Web.UI;


using System.Web.UI.WebControls;


using System.Web.UI.WebControls.WebParts;


using System.Web.UI.HtmlControls;




//内容页面


public partial class Default2 : System.Web.UI.Page




...{


protected void Page_Load(object sender, EventArgs e)




...{




}


protected void btnContent_Click(object sender, EventArgs e)




...{


Label lbl = this.Master.FindControl("lblMaster") as Label;


Response.Write("<script language='javascript'>alert('" + lbl.Text + "');</script>");


}


}