UserControl没有名为ContentTemplate的公共属性 [英] UserControl does not have public property named ContentTemplate

问题描述

这个问题已经问了几十遍了；但从未解决.

This question has been asked a few dozen times before; but has never been solved.

我有一个 UpdatePanel

i have an UpdatePanel

<asp:UpdatePanel ID="UpdatePanelSetupToolbar" runat="server">
   <ContentTemplate>
      ...           
   </ContentTemplate>
</asp:UpdatePanel>      

但是Visual Studio(2010(Professional(Windows(7(Professional(64-bit))))))中的 visual page designer 出现错误:

But the visual page designer in Visual Studio (2010 (Professional (Windows (7 (Professional (64-bit)))))) gives the error:

创建控件时发生错误-UpdatePanelSetupToolbar

Error Creating Control - UpdatePanelSetupToolbar

类型'System.Web.UI.UserControl'没有名为'ContentTemplate'的公共属性.

Type 'System.Web.UI.UserControl' does not have a public property named 'ContentTemplate'.

^{在漂亮的屏幕截图中添加漂亮的颜色以达到漂亮的效果}

现在，严格来讲，这是真的: 没有没有名为ContentTemplate的公共属性.

Now, strictly speaking, that is true: UserControl does not have a public property called ContentTemplate.

幸运的是，我的UpdatePanel是 UpdatePanel ，并且确实具有名为

Fortunately my UpdatePanel is an UpdatePanel, and it does have a public property named 'ContentTemplate'.

那么我如何说服Visual Studio我的UpdatePanel是UpdatePanel?

So how do i convince Visual Studio that my UpdatePanel is an UpdatePanel?

上面的代码实际上并没有按原样失败:

The code above doesn't actually fail as is:

<asp:UpdatePanel ID="UpdatePanelSetupToolbar" runat="server">
   <ContentTemplate>
      ...           
   </ContentTemplate>
</asp:UpdatePanel>  

仅当我在... ContentTemplate中包含内容时，它才会失败:

It only fails when i have content inside the ... ContentTemplate:

    <asp:UpdatePanel ID="UpdatePanelSetupToolbar" runat="server">
        <ContentTemplate>
            <Vista:Toolbar ID="ToolbarSetup" runat="server">
                <ContentTemplate>
                    <asp:LinkButton ID="bbSetupDays" ToolTip="Specify how many allocations will be available on these selected days"
                    OnClick="bbSetupDays_Click"                                        
                    runat="server">Setup Selected Days</asp:LinkButton>         
                </ContentTemplate>
            </Vista:Toolbar>        
        </ContentTemplate>
    </asp:UpdatePanel>      

• 但是Visual Studio并不抱怨内部ToolbarSetup
• 它在抱怨外部的UpdatePanelSetupToolbar控件
• but Visual Studio is not complaining about inner ToolbarSetup
• it's complaining about the outer UpdatePanelSetupToolbar control

那怎么办

类型'％s'没有名为'％s'的公共属性.

Type '%s' does not have a public property named '%s'.

?

ASP.net网站编译，构建和运行 fine .只是Visual Studio(2010)设计师在抱怨.

The ASP.net web-site compiles, builds, and runs fine. It's just the Visual Studio (2010) designer that complains.

那么Type '%s' does not have a public property named '%s'.怎么了?

此问题是正在进行的Stackoverflow系列中的一个问题，模板化用户控件" :

This question is one in the ongoing Stackoverflow series, "Templating user controls":

• 如何向用户控件添加模板?
• 如何从Control(而不是UserControl)继承?
• UserControl具有IsPostBack，但Control没有
• UserControl没有名为ContentTemplate的公共属性
• 如何从web.config中指定CodeFileBaseClass?
• How to add a Templating to a UserControl?
• How to inherit from Control, rather than UserControl?
• UserControl has IsPostBack, but Control does not
• UserControl does not have public property named ContentTemplate
• How do i specify CodeFileBaseClass from web.config?

推荐答案

更新面板非常酷，但是您真的无法使用它来进行用户控制.好消息是，您可以按照用于制作ajaxcontroltoolkit的updatepanel的相同设计模式，来制作具有javascript负载的asp.net用户控件.

The update panel is really cool but you really can't make user controls with it. The good news is you can make asp.net user controls that have a javascript payload by following the same design pattern used to make the updatepanel for the ajaxcontroltoolkit.

我在2009年3月建立了这个程序，因为我需要一个不会阻止ui的消息框.我使用ajaxcontroltoolkit遵循了用户控件的设计模式.它具有完整的源代码，并且VS intelisense可以在javascript上运行.这是一个用户控件，您只需将其放到页面上即可，它带有自己的javascript有效负载，可以将其添加到您的内容中.它甚至可以在没有任何修改的数据转发器中工作.实际上，它在asp.net网站上被接受为ajaxcontroltoolkit用户控件.

I built this back in Mar 2009 because I needed a message box that didn't block the ui. I followed the design pattern for usercontrols using the ajaxcontroltoolkit. It has complete source and the VS intelisense works on the javascript. It's a usercontrol that you just drop on the page and it carries it's own javascript payload that you can ajaxify to your hearts content. It even works in a data repeater with no modifications. It was actually accepted as a ajaxcontroltoolkit usercontrol on the website asp.net.

它是免费的，如果需要，可以将其放在github或其他存储库上.

It's free you could put it on github or other repository if you wanted.

http://gosylvester.com/downloads/messagebox.aspx

http://gosylvester.com/blog.aspx?id=55

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