系统地学习ASP.NET AJAX(1) - 简单地过一下每个控件(ScriptManager、ScriptManagerProxy、UpdatePanel、UpdateProgress和Timer)
Posted on 2007-06-01 09:55 yinix 阅读(377) 评论(0) 编辑 收藏 举报
转自:http://www.cnblogs.com/webabcd/archive/2007/05/20/753223.html
[源码下载]
作者:webabcd
介绍
ASP.NET AJAX就5个控件,分别是ScriptManager、ScriptManagerProxy、UpdatePanel、UpdateProgress和Timer。先简单地过一下。
关键
1、ScriptManager和ScriptManagerProxy
一个页只能有一个ScriptManager(包含了所有脚本资源),要放到任何用到AJAX的控件的前面。
如果把它放到母板页,而内容页需要与其不同的配置的话,则应在内容页使用ScriptManagerProxy。
ScriptManager默认EnablePartialRendering="true"。
2、UpdatePanel
UpdatePanel内放置需要被刷新的控件,如果是其内部控件事件导致其刷新,则不用另外做什么设置,因为UpdatePanel默认ChildrenAsTriggers="true"。
如果是UpdatePanel外部控件导致其刷新的话,则应设置Triggers。
在Triggers内,如果AsyncPostBackTrigger未设置EventName,则为其指定控件的默认事件。
注意:UpdatePanel默认UpdateMode="Always",需要的话则设置UpdateMode="Conditional"。
3、UpdateProgress
默认,任何回发,当有延迟的时候则显示UpdateProgress里的ProgressTemplate。
要与某UpdatePanel关联则设置AssociatedUpdatePanelID属性。
DynamicLayout为true则用“display:none;”隐藏;DynamicLayout为false则用“visibility:hidden;”隐藏。
默认情况下,例如有2个异步回发,如果第1个还没有执行完毕就执行第2个的话,则会先取消第1个异步回发。
4、Timer
Interval:间隔时间,单位(毫秒);每一个间隔时间后将触发Tick事件。
Timer要放在其所刷新的UpdatePanel内部;放外面的话要设置UpdatePanel的Triggers。
示例
1、最简单的示例
<%@ Page Language="C#" MasterPageFile="~/Site.master" AutoEventWireup="true" CodeFile="Sample.aspx.cs"
Inherits="Overview_Sample" Title="最简单的示例" %>
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
<asp:Content ID="Content1" ContentPlaceHolderID="ContentPlaceHolder1" runat="Server">
<ul>
<li>之前要有ScriptManager(包含了所有脚本资源),我把它放到母板页了。内容页如需不同配置则应使用ScriptManagerProxy。</li>
<li>最简单的示例,拖个UpdatePanel进来。在UpdatePanel内拖个GridView,并设置其数据源即可。 </li>
</ul>
<asp:UpdatePanel ID="UpdatePanel1" runat="server">
<ContentTemplate>
<asp:GridView ID="GridView1" runat="server" AllowPaging="True" AllowSorting="True"
DataSourceID="SqlDataSource1">
<Columns>
<asp:CommandField ShowEditButton="True" ShowSelectButton="True" />
</Columns>
</asp:GridView>
</ContentTemplate>
</asp:UpdatePanel>
<asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:connstr %>"
DeleteCommand="DELETE FROM [Products] WHERE [ProductID] = @ProductID" InsertCommand="INSERT INTO [Products] ([ProductName], [QuantityPerUnit], [UnitPrice], [Discontinued]) VALUES (@ProductName, @QuantityPerUnit, @UnitPrice, @Discontinued)"
SelectCommand="SELECT [ProductID], [ProductName], [QuantityPerUnit], [UnitPrice], [Discontinued] FROM [Products]"
UpdateCommand="UPDATE [Products] SET [ProductName] = @ProductName, [QuantityPerUnit] = @QuantityPerUnit, [UnitPrice] = @UnitPrice, [Discontinued] = @Discontinued WHERE [ProductID] = @ProductID">
<DeleteParameters>
<asp:Parameter Name="ProductID" Type="Int32" />
</DeleteParameters>
<UpdateParameters>
<asp:Parameter Name="ProductName" Type="String" />
<asp:Parameter Name="QuantityPerUnit" Type="String" />
<asp:Parameter Name="UnitPrice" Type="Decimal" />
<asp:Parameter Name="Discontinued" Type="Boolean" />
<asp:Parameter Name="ProductID" Type="Int32" />
</UpdateParameters>
<InsertParameters>
<asp:Parameter Name="ProductName" Type="String" />
<asp:Parameter Name="QuantityPerUnit" Type="String" />
<asp:Parameter Name="UnitPrice" Type="Decimal" />
<asp:Parameter Name="Discontinued" Type="Boolean" />
</InsertParameters>
</asp:SqlDataSource>
</asp:Content>
2、UpdatePanel
<%@ Page Language="C#" MasterPageFile="~/Site.master" AutoEventWireup="true" CodeFile="UpdatePanel.aspx.cs"
Inherits="Overview_UpdatePanel" Title="UpdatePanel" %>
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
<asp:Content ID="Content1" ContentPlaceHolderID="ContentPlaceHolder1" runat="Server">
<ul>
<li>UpdatePanel内放置需要被刷新的控件,如果是其内部控件事件导致其刷新,则不用另外做什么设置,因为UpdatePanel默认ChildrenAsTriggers="true"。
</li>
<li>如果是UpdatePanel外部控件导致其刷新的话,则应设置Triggers。 </li>
<li>注:UpdatePanel默认UpdateMode="Always",需要的话则设置UpdateMode="Conditional"。</li>
</ul>
<asp:UpdatePanel ID="UpdatePanel1" runat="server">
<ContentTemplate>
<fieldset>
<legend>我在UpdatePanel里</legend>
<asp:Label ID="Label1" runat="server" Text="我是Label"></asp:Label>
</fieldset>
</ContentTemplate>
<Triggers>
<%--如果没设置EventName,则取默认事件,Button的默认事件为Click--%>
<asp:AsyncPostBackTrigger ControlID="Button1" />
</Triggers>
</asp:UpdatePanel>
<p>
</p>
<fieldset>
<legend>我在UpdatePanel外</legend>
<asp:Button ID="Button1" runat="server" Text="按钮" OnClick="Button1_Click" />
</fieldset>
</asp:Content>
3、UpdateProgress
<%@ Page Language="C#" MasterPageFile="~/Site.master" AutoEventWireup="true" CodeFile="UpdateProgress.aspx.cs"
Inherits="Overview_UpdateProgress" Title="UpdateProgress" %>
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
<asp:Content ID="Content1" ContentPlaceHolderID="ContentPlaceHolder1" runat="Server">
<ul>
<li>默认,任何回发,当有延迟的时候则显示UpdateProgress里的ProgressTemplate。</li>
<li>要与某UpdatePanel关联则设置AssociatedUpdatePanelID属性。</li>
<li>DynamicLayout为true则用“display:none;”隐藏;DynamicLayout为false则用“visibility:hidden;”隐藏</li>
</ul>
<asp:UpdatePanel ID="UpdatePanel1" runat="server">
<ContentTemplate>
<fieldset>
<legend>UpdatePanel1</legend>
<asp:Label ID="Label1" runat="server" Text="Label1"></asp:Label>
<br />
<asp:Button ID="Button1" runat="server" Text="Button" OnClick="Button1_Click" />
</fieldset>
</ContentTemplate>
</asp:UpdatePanel>
<asp:UpdateProgress ID="UpdateProgress1" runat="server" AssociatedUpdatePanelID="UpdatePanel1"
DynamicLayout="false">
<ProgressTemplate>
<p>
UpdatePanel1更新中![](https://www.cnblogs.com/Images/dot.gif)
</p>
</ProgressTemplate>
</asp:UpdateProgress>
<p>
</p>
<asp:UpdatePanel ID="UpdatePanel2" runat="server">
<ContentTemplate>
<fieldset>
<legend>UpdatePanel2</legend>
<asp:Label ID="Label2" runat="server" Text="Label2"></asp:Label>
<br />
<asp:Button ID="Button2" runat="server" Text="Button" OnClick="Button2_Click" />
</fieldset>
</ContentTemplate>
</asp:UpdatePanel>
<asp:UpdateProgress ID="UpdateProgress2" runat="server" AssociatedUpdatePanelID="UpdatePanel2"
DynamicLayout="true">
<ProgressTemplate>
<p>
UpdatePanel2更新中![](https://www.cnblogs.com/Images/dot.gif)
</p>
</ProgressTemplate>
</asp:UpdateProgress>
<p>
</p>
<asp:UpdatePanel ID="UpdatePanel3" runat="server">
<ContentTemplate>
<fieldset>
<legend>UpdatePanel3</legend>
<asp:Label ID="Label3" runat="server" Text="Label3"></asp:Label><br />
<asp:Button ID="Button3" runat="server" Text="Button" OnClick="Button3_Click" />
</fieldset>
</ContentTemplate>
</asp:UpdatePanel>
<asp:UpdateProgress ID="UpdateProgress3" runat="server">
<ProgressTemplate>
有延迟我就更新![](https://www.cnblogs.com/Images/dot.gif)
</ProgressTemplate>
</asp:UpdateProgress>
</asp:Content>
4、Timer
<%@ Page Language="C#" MasterPageFile="~/Site.master" AutoEventWireup="true" CodeFile="Timer.aspx.cs"
Inherits="Overview_Timer" Title="Timer" %>
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
<asp:Content ID="Content1" ContentPlaceHolderID="ContentPlaceHolder1" runat="Server">
<ul>
<li>Interval:间隔时间,单位(毫秒);每一个间隔时间后将触发Tick事件 </li>
<li>Timer要放在其所刷新的UpdatePanel内部;放外面的话要设置UpdatePanel的Triggers。</li>
</ul>
<asp:UpdatePanel ID="UpdatePanel1" runat="server">
<ContentTemplate>
<fieldset>
<legend>UpdatePanel1</legend>
<p>
内部Timer
<asp:Timer ID="Timer1" runat="server" OnTick="Timer1_Tick" Interval="1000">
</asp:Timer>
</p>
<asp:Label ID="Label1" runat="server" Text="Label"></asp:Label>
</fieldset>
</ContentTemplate>
</asp:UpdatePanel>
</asp:Content>
注:以上示例涉及到后置代码的,其作用都是用来刷新相关的Label的,所以略掉了。
OK
[源码下载]
系统地学习ASP.NET AJAX(1) - 简单地过一下每个控件(ScriptManager、ScriptManagerProxy、UpdatePanel、UpdateProgress和Timer)
作者:webabcd
介绍
ASP.NET AJAX就5个控件,分别是ScriptManager、ScriptManagerProxy、UpdatePanel、UpdateProgress和Timer。先简单地过一下。
关键
1、ScriptManager和ScriptManagerProxy
一个页只能有一个ScriptManager(包含了所有脚本资源),要放到任何用到AJAX的控件的前面。
如果把它放到母板页,而内容页需要与其不同的配置的话,则应在内容页使用ScriptManagerProxy。
ScriptManager默认EnablePartialRendering="true"。
2、UpdatePanel
UpdatePanel内放置需要被刷新的控件,如果是其内部控件事件导致其刷新,则不用另外做什么设置,因为UpdatePanel默认ChildrenAsTriggers="true"。
如果是UpdatePanel外部控件导致其刷新的话,则应设置Triggers。
在Triggers内,如果AsyncPostBackTrigger未设置EventName,则为其指定控件的默认事件。
注意:UpdatePanel默认UpdateMode="Always",需要的话则设置UpdateMode="Conditional"。
3、UpdateProgress
默认,任何回发,当有延迟的时候则显示UpdateProgress里的ProgressTemplate。
要与某UpdatePanel关联则设置AssociatedUpdatePanelID属性。
DynamicLayout为true则用“display:none;”隐藏;DynamicLayout为false则用“visibility:hidden;”隐藏。
默认情况下,例如有2个异步回发,如果第1个还没有执行完毕就执行第2个的话,则会先取消第1个异步回发。
4、Timer
Interval:间隔时间,单位(毫秒);每一个间隔时间后将触发Tick事件。
Timer要放在其所刷新的UpdatePanel内部;放外面的话要设置UpdatePanel的Triggers。
示例
1、最简单的示例
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2、UpdatePanel
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedBlockStart.gif)
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![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedBlockStart.gif)
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3、UpdateProgress
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedBlockStart.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedBlockEnd.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
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4、Timer
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注:以上示例涉及到后置代码的,其作用都是用来刷新相关的Label的,所以略掉了。
OK
[源码下载]