哎,真是辛苦你了,为什么不自己做个测试呢
首先建立一个ascx文件,里面当然放了一个文本框,一个验证控件
<%@ Control Language="C#" AutoEventWireup="true" CodeFile="WebUserControl1.ascx.cs" Inherits="Test_WebUserControl1" %>
<asp:TextBox runat="server" Text="10" ID="tb1"></asp:TextBox>
<asp:RangeValidator runat="server" ID="rangesl" ControlToValidate="tb1" Type="Integer"></asp:RangeValidator>
然后我们并不注意逻辑,只看重事件发生的先后顺序
以下是ascx.cs
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;
public partial class Test_WebUserControl1 : System.Web.UI.UserControl
{
public bool IsNew{
get
{
if (ViewState["IsNew"] == null)
return false;
else
return (bool)ViewState["IsNew"];
}
set {
ViewState["IsNew"] = value;
}
}
protected override void LoadViewState(object savedState)
{
Response.Write("UserControl LoadViewState<br>");
base.LoadViewState(savedState);
}
protected override object SaveViewState()
{
Response.Write("UserControl SaveViewState<br>");
return base.SaveViewState();
}
private void chushi(){
if (IsNew)
{
rangesl.MaximumValue = "1000";
}
else {
rangesl.MaximumValue = "100";
}
rangesl.MinimumValue = "0";
rangesl.ErrorMessage = "Must lower than" + rangesl.MaximumValue;
Response.Write("UserControl chusi "+IsNew.ToString()+"<br>");
}
protected void Page_Init(object sender, EventArgs e) {
Response.Write("UserControl_Init<br>");
}
protected void Page_Load(object sender, EventArgs e)
{
Response.Write("UserControl_Load<br>");
}
protected void Page_PreRender(object sender, EventArgs e)
{
//chushi();--只看事件的先后顺序
Response.Write("UserControl PreRender<br>");
}
}
然后简单的用一个aspx页面做测试
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="Test_Default" %>
<%@ Register Src="WebUserControl1.ascx" TagName="WebUserControl1" TagPrefix="uc1" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>Untitled Page</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<uc1:WebUserControl1 id="WebUserControl1_1" runat="server" IsNew="false">
</uc1:WebUserControl1></div>
<asp:CheckBox ID="CBIsNew" runat="server" AutoPostBack="True" OnCheckedChanged="CBIsNew_CheckedChanged" />
</form>
</body>
</html>
其对象的cs文件我们同样只注重事件的先后顺序
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;
public partial class Test_Default : System.Web.UI.Page
{
protected override void LoadViewState(object savedState)
{
Response.Write("Page LoadViewState<br>");
base.LoadViewState(savedState);
}
protected override object SaveViewState()
{
Response.Write("Page SaveViewState<br>");
return base.SaveViewState();
}
protected void Page_Init(object sender, EventArgs e) {
Response.Write("Page Page_Init<br>");
}
protected void Page_Load(object sender, EventArgs e)
{
Response.Write("Page Page_Load<br>");
}
protected void Page_PreRender(object sender, EventArgs e)
{
Response.Write("Page PreRender<br>");
}
protected void CBIsNew_CheckedChanged(object sender, EventArgs e)
{
Response.Write("Page CheckedChanged<br>");
this.WebUserControl1_1.IsNew = ((CheckBox)sender).Checked;
}
}
