Introduction to the problem I have been taught about OO Analysis and Design through Craig Larman's Applying UML and Patterns: An Introduction to Object-Oriented Analysis and Design and Iterative Development, that follows the UP(Unified Process). When using it, we usually draw a Domain Model and from it, doing Interaction/Association Diagrams, we get to the Class Diagrams . We generally t
问题简介 通过Craig Larman的应用UML和模式：面向对象分析和设计和迭代开发介绍，我学习了面向对象分析和设计，它遵循UP（统一过程）。 在使用它的时候，我们通常会绘制一个Domain Model并且从中进行交互/关联图，我们会看到Class Diagrams 。 我们通常会使Controllers成为我们Model和“外部世界”之间的“大门”（遵循GRASP模式）。 所有的世界访问做任何类型的逻辑必须通过Controllers 。 我将调用这些Controllers Model
I'm having trouble filtering hierarchical data that's being displayed in nested xaml templates. I've got a ObservableCollection<Foo> Foos , that I'm displaying in XAML. Lets say Foo looks like: class Foo { public ObservableCollection<Bar> Bars; } class Bar { public ObservableCollection<Qux> Quxes; } I'm displaying Foos with the following xaml:
我无法过滤嵌套xaml模板中显示的分层数据。 我有一个ObservableCollection<Foo> Foos ，我在XAML中显示。 可以说Foo看起来像： class Foo { public ObservableCollection<Bar> Bars; } class Bar { public ObservableCollection<Qux> Quxes; } 我使用以下xaml显示Foos： <Grid> <Grid.Resources> <CollectionViewSource x:Key="MyCVS" Source="{Binding RelativeSo
Why is it that there are so many mime types for the same file extension? How is one supposed to determine the mime type of a file solely based on the extension, if for example there are multiple mime types associated with this extension? Example: .mp3 audio/mpeg3 .mp3 audio/x-mpeg-3 .mp3 video/mpeg .mp3 video/x-mpeg How is one supposed to know the default mime type? What does the
为什么相同的文件扩展名有太多的MIME类型？ 一个人应该如何根据扩展名来确定文件的MIME类型，例如，如果有多个与此扩展名关联的MIME类型？ Example: .mp3 audio/mpeg3 .mp3 audio/x-mpeg-3 .mp3 video/mpeg .mp3 video/x-mpeg 人们应该如何知道默认的MIME类型？ x-表示什么？ 这是一个mime类型的linux / unix味道吗？ 为什么这些都没有标准化（还）？ 来源：Sitepoint然而，还有其他许多产生类似意大利面条
I am creating a library of utilities to be used both in desktop environment in a web environment. It contains several features that I believe are often repeated in my applications, including utility to get the mime type of a file by its content (not the extension). The files that I'll have to check are the most common (jpg, png, pdf, txt) so I chose to use the external method FindMimeFrom
我正在创建一个用于Web环境中的桌面环境中的实用程序库。 它包含我认为经常在我的应用程序中重复的几个功能，包括通过其内容（而不是扩展名）获取文件的MIME类型的实用程序。 我必须检查的文件是最常见的（jpg，png，pdf，txt），所以我选择使用外部方法FindMimeFromData （上面的链接） 使用.NET，如何根据文件签名而不是扩展名找到文件的MIME类型 除了两个不正确的mime类型的JPG（ image/pjpg ）和PNG（ image/x-png
Why does the FindMimeFromData function from Urlmon.dll return MIME type “application/octet-stream” for many file types, whereas checking MIME type by file extension (Ie against windows registry) returns a more precise type? For example, mp3 is an “application/octet-stream” instead of “audio/mp3”. Basically, I want to verify an uploaded file with incorrect extension. This method seems to work
为什么Urlmon.dll的FindMimeFromData函数为许多文件类型返回MIME类型“application / octet-stream”，而通过文件扩展名检查MIME类型（即针对Windows注册表）会返回更精确的类型？ 例如，mp3是“application / octet-stream”而不是“audio / mp3”。 基本上，我想验证上传的文件的扩展名不正确。 此方法似乎适用于许多图像文件，xml等。 问题与此类似，但由于返回的MIME类型不同/不明确，所提供的解决方案不适用于验证上传的文
I have a tableadapter and I want to do something when the RowUpdated event is fired. I can't figure out where to put the code to add the handler to the event. public partial class MyTableAdapter { void OnRowUpdated(object sender, System.Data.Odbc.OdbcRowUpdatedEventArgs e) { } } How do I get the code below to run when the TableAdapter is created? Adapter.RowUpdated +=
我有一个tableadapter，并且我想在RowUpdated事件触发时做些事情。 我无法弄清楚把代码添加到事件处理程序的位置。 public partial class MyTableAdapter { void OnRowUpdated(object sender, System.Data.Odbc.OdbcRowUpdatedEventArgs e) { } } 如何在TableAdapter创建时运行下面的代码？ Adapter.RowUpdated += new System.Data.Odbc.OdbcRowUpdatedEventHandler(OnRowUpdated); 我分两步解决
I'd like to have customizable toolbars in my application, like those offered by Visual Studio 2008 (right click on toolbar, customize). I need a WPF solution, and I haven't been able to find any (neither on SO, or Google). I did find this Visual Studio 2010 blog entry, which implies that even Microsoft had some trouble doing it. So anyway, to keep it simple, the question is, is there a
我想在我的应用程序中有可定制的工具栏，就像Visual Studio 2008提供的工具栏（右键单击工具栏上的自定义）。 我需要一个WPF解决方案，而且我还找不到任何（在SO或Google上）。 我确实发现了这个Visual Studio 2010博客条目，这意味着即使是微软在做这件事情时也遇到了一些麻烦。 因此，无论如何，为了简单起见，问题是，是否有任何提供此功能的开源/免费框架（它不一定是VS2008解决方案的精确副本）。 我只是玩了一会儿，
I am trying to download a file through webapi, which works perfectly, except for Excel. The excel file is downloaded successfully, and when I open the same it gives me a "File is corrupt" error. However, it is not corrupt. When I search on the Internet it is asking me to follow these: Open Excel . Click on File > Options. Select Trust Center > Trust center settings. Se
我试图通过webapi下载文件，除了Excel以外，它完美地工作。 excel文件下载成功，当我打开它时，它会给我一个“File is corrupt”错误。 但是，它不是腐败的。 当我在互联网上搜索时，它要求我遵循以下内容： 打开Excel。 点击文件>选项。 选择信任中心>信任中心设置。 选择受保护的视图。 取消选中受保护视图>确定下的所有选项。 重新启动Excel并尝试打开Excel文档。 更改此设置后，我可以无任何问题地
I want to export a gridview to excel 2007,the code i'm using can import to excel 2007 with the mime type application/vnd.ms-excel (excel 2003)but i get a warning msg that says "The file you are trying to open is in a different format...",with yes and no to clic,clicking in yes the file open,buy i can't have this msg for the customers.And using the mime type for excel 2007 (appli
我想导出一个gridview到excel 2007，我使用的代码可以导入到mime类型应用程序/ vnd.ms-excel（excel 2003）的excel 2007中，但是我得到一个警告信息，说“你正在尝试的文件打开是在不同的格式...“，与是和否到clic，单击是的文件打开，购买我不能有这msg为customers.And使用MIME类型的Excel 2007（application / vnd .openxmlformats-officedocument.spreadsheetml.sheet）文件甚至没有打开“Excel无法打开文件，因为格式或扩展无
I'm trying to create an Excel file from a byte[] array after reading the data from a DataTable using a DataTableReader, all this in a ashx file. But it's just not working. Here I post some code: DataTableReader RS = dt.CreateDataReader(); byte[] byteArray = GetData(RS); context.Response.ContentType = "application/ms-excel"; context.Response.Clear(); // context.Response.Charset = "";
我试图使用DataTableReader从DataTable中读取数据后，从byte []数组创建Excel文件，所有这些都在ashx文件中。 但它不起作用。 在这里我发布一些代码： DataTableReader RS = dt.CreateDataReader(); byte[] byteArray = GetData(RS); context.Response.ContentType = "application/ms-excel"; context.Response.Clear(); // context.Response.Charset = ""; try { context.Response.BinaryWrite(byteArray); contex