子页面赋值给父页面的控件方法

 

   在父页面Parent.aspx点击弹出第二个页面，将会弹出Child.aspx子页面，在子页面中输入需要传入到Parent.aspx的值点击确认，则可以把Child.aspx子页面输入的值传到Parent.aspx上的控件上。
Parent.aspx的HTML为：
 

<% @ Page language = " c# "  Codebehind = " Parent.aspx.cs "  AutoEventWireup = " false "  Inherits = " TestToParent.WebForm1 "   %>
<! DOCTYPE HTML PUBLIC  " -//W3C//DTD HTML 4.0 Transitional//EN "   >
< HTML >
     < HEAD >
         < title > WebForm1 </ title >
         < meta name = " GENERATOR "  Content = " Microsoft Visual Studio .NET 7.1 " >
         < meta name = " CODE_LANGUAGE "  Content = " C# " >
         < meta name = " vs_defaultClientScript "  content = " JavaScript " >
         < meta name = " vs_targetSchema "  content = " http://schemas.microsoft.com/intellisense/ie5 " >
         < script language = " javascript " >

//  ------------------弹出window.open窗口--------------------
function openwin(fileName,type,window_width,window_height,property)
{ 
    var top  = (window.screen.availHeight-window_height)/2;
    var left = (window.screen.availWidth-window_width)/2;
    var newwindow;
    if (window_width=="" && window_height=="")
    {
       if (type=="0")
       {
           newwindow=window.open(fileName,"","left="+left+",top="+top+","+property);
       }
       else
       {
           newwindow=window.open(fileName,"","left=0,top=0,"+property);
       }
    }
    else
    {
    if (type=="0")
    {
        newwindow=window.open(fileName,"","left=0,top=0,height="+window_height+",width="+window_width+","+property);
    }
    else
    {
        newwindow=window.open(fileName,"","left="+left+",top="+top+",height="+window_height+",width="+window_width+","+property);
    }
       
    }
    return newwindow;
}

function openwinsimp(fileName,window_width,window_height)
{ 

    //alert(fileName);
    var newwindow=openwin(fileName,'1',window_width,window_height,'resizable=no,scrollbars=auto,status=yes,toolbar=no,menubar=no,location=no');
    newwindow.focus();
    
    return newwindow;
}

         </ script >
         < script >
        function getid()
         {

          var id = new String(window.location.href);
          //alert(id);

            if( id.indexOf("id=", 1) ==-1 )
            {
              id=-1;
             

            }
            else
            {
               
                id = parseInt( id.substr( id.indexOf("id=", 1) + 3 ) );
            }
           // alert(id);
             return id;
             
           
          }
          
          
         </ script >
     </ HEAD >
     < body MS_POSITIONING = " GridLayout " >
         < form id = " Form1 "  method = " post "  runat = " server " >
             < a href = " # "  onclick = " openwinsimp('./Child.aspx?id='+getid()+'&amp;type=d1&amp;ctrl1ID=txt_Child',1024,768) " >
                弹出一个页面 </ a >
             < asp:TextBox id = " txt_Child "  style = " Z-INDEX: 101; LEFT: 232px; POSITION: absolute; TOP: 80px "
                runat = " server " ></ asp:TextBox >
             < asp:Label id = " Label1 "  style = " Z-INDEX: 102; LEFT: 96px; POSITION: absolute; TOP: 32px "  runat = " server " > 第一个页面 </ asp:Label >
             < asp:Label id = " Label2 "  style = " Z-INDEX: 103; LEFT: 40px; POSITION: absolute; TOP: 88px "  runat = " server " > 你在第二个页面输入的是： </ asp:Label >
         </ form >
     </ body >
</ HTML >

预览如下：
 

 

<% @ Page language = " c# "  Codebehind = " Child.aspx.cs "  AutoEventWireup = " false "  Inherits = " TestToParent.WebForm2 "   %>
<! DOCTYPE HTML PUBLIC  " -//W3C//DTD HTML 4.0 Transitional//EN "   >
< HTML >
     < HEAD >
         < title > WebForm2 </ title >
         < meta name = " GENERATOR "  Content = " Microsoft Visual Studio .NET 7.1 " >
         < meta name = " CODE_LANGUAGE "  Content = " C# " >
         < meta name = " vs_defaultClientScript "  content = " JavaScript " >
         < meta name = " vs_targetSchema "  content = " http://schemas.microsoft.com/intellisense/ie5 " >
     </ HEAD >
     < body MS_POSITIONING = " GridLayout " >
         < form id = " Form1 "  method = " post "  runat = " server " >
             < FONT face = " 宋体 " >
                 < asp:Button id = " Button1 "  style = " Z-INDEX: 101; LEFT: 120px; POSITION: absolute; TOP: 128px "  runat = " server "
                    Text = " Button " ></ asp:Button >
                 < asp:TextBox id = " TextBox1 "  style = " Z-INDEX: 102; LEFT: 96px; POSITION: absolute; TOP: 88px "  runat = " server " ></ asp:TextBox >
                 < asp:Label id = " Label1 "  style = " Z-INDEX: 103; LEFT: 0px; POSITION: absolute; TOP: 96px "  runat = " server " > 第二个页面 </ asp:Label ></ FONT >
         </ form >
     </ body >
</ HTML >

 

.CS代码：
 

private   void  Page_Load( object  sender, System.EventArgs e)
         {
            // 在此处放置用户代码以初始化页面
            if (Request.Params["ctrl1ID"] != null)
            {
                ViewState["ctrl1ID"] = Request.Params["ctrl1ID"].Trim();

            }
        }

         Web 窗体设计器生成的代码 #region Web 窗体设计器生成的代码
        override protected void OnInit(EventArgs e)
        {
            //
            // CODEGEN: 该调用是 ASP.NET Web 窗体设计器所必需的。
            //
            InitializeComponent();
            base.OnInit(e);
        }
        
        /**//// <summary>
        /// 设计器支持所需的方法 - 不要使用代码编辑器修改
        /// 此方法的内容。
        /// </summary>
        private void InitializeComponent()
        {    
            this.Button1.Click += new System.EventHandler(this.Button1_Click);
            this.Load += new System.EventHandler(this.Page_Load);

        }
        #endregion

         /**/ /// <summary>
        /// 生成script脚本,完成对父窗口控件的赋值
        /// </summary>
        /// <param name="value1">控件1的值</param>
        /// <param name="value2">控件2的值</param>
        /// <returns></returns>
         private   string  MakeScriptStr( string  text)
         {

            //value= "  [" + value + "]";
            string result = "<script>";

            result += "window.opener.document.all('" + ViewState["ctrl1ID"] + "',0).value='" + text + "';";
            result += "window.close();";
            result += "</script>";

            return result;
        }
         private   void  Button1_Click( object  sender, System.EventArgs e)
         {
            string strScript = this.MakeScriptStr(this.TextBox1.Text);
            Page.RegisterStartupScript("return1", strScript);
        
        }

第二个页面预览如下：
 

输入：guojiang，点击按钮。出现如下结果：