在asp.net 2.0中,要在不同的web控件之間互相調用,必須要<%@ Reference VirtualPath="另一控件名稱“>
來引用,舉例如下
default.aspx:
<form id="form1" runat="server">
<uc1:WebUserControl id="WebUserControl1" runat="server">
</uc1:WebUserControl>
<uc2:WebUserControl2 ID="WebUserControl2_1" runat="server" />
</form>
我們要實現的是,按下控件1的按鈕後,將在控件2的文本框中顯示出指定的文本
在首頁裡,分別調用了控件1和控件2
webcontrol.ascx:
<%@ Control Language="C#" AutoEventWireup="true" CodeFile="WebUserControl.ascx.cs" Inherits="WebUserControl" %>
<%@ Reference VirtualPath="~/WebUserControl2.ascx" %>
<asp:Button ID="Button1" runat="server" OnClick="Button1_Click" Text="Button" />
這裡放置一個按鈕,然後用reference來引用控件2
webcontrol.ascx.cs:
protected void Button1_Click(object sender, EventArgs e)
{
WebUserControl2 w = Page.FindControl("WebUserControl2_1") as WebUserControl2;
w.Text = "Hello all!";
}
對於控件2:
<%@ Control Language="C#" AutoEventWireup="true" CodeFile="WebUserControl2.ascx.cs" Inherits="WebUserControl2" %>
<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
控件2的codebehind代碼:
public partial class WebUserControl2 : System.Web.UI.UserControl
{
protected void Page_Load(object sender, EventArgs e)
{
}
public string Text
{
set { TextBox1.Text = value; }
}
}