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page.DataContext not inherited from parent Frame?

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I have a Page page in a Frame frame , with frame.DataContext = "foo" . (page.Parent as Frame).DataContext is "foo" . ok BindingExpression for page.DataContext is null (also forced with ClearValue). ok page.DataContext is null . but I expected "foo"! Why isn't the DataContext inherited? As far as I understand the Frame sandboxes the content. But I couldn't find any documentation of this behavior - can anyone point me to a place where this is mentioned? To answer your question about documentation of this behavior: It's not Microsoft documentation, but I have a couple of WPF books that both

VSTO Add-ins, COMAddIns and RequestComAddInAutomationService

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问题 Please see 1st Edit (the screenshot at the bottom): I've followed this article to have a Winform app trigger a VSTO Add-In method: http://blogs.msdn.com/b/andreww/archive/2007/01/15/vsto-add-ins-comaddins-and-requestcomaddinautomationservice.aspx At the end of the above article the author mentions a issue and tries to ameliorate it here: http://blogs.msdn.com/b/andreww/archive/2008/08/11/why-your-comaddin-object-should-derive-from-standardolemarshalobject.aspx I have been through the code

Difference between 'on error goto 0' and 'on error goto -1' — VBA

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问题 Can anyone find the difference between \'On error goto -1\' and \'on error goto 0\' in VBA? I\'ve tried google and msdn, but I\'ve had no luck. 回答1: On Error GoTo 0 disables any error trapping currently present in the procedure. On Error GoTo -1 clears the error handling and sets it to nothing which allows you to create another error trap. Example: On Error GoTo -1 After the first error is raised, it will GoTo ErrorFound which will then clear the routine's error handling and set a new one,

Where are CLR-defined methods like [delegate].BeginInvoke documented? [closed]

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问题 Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed last year . [EDIT, Completely rephrased:] Seems like my question was poorly worded indeed, and poorly received too. So I hope that this complete rephrasing helps... MSDN tells clearly specifies: Control.BeginInvoke() Executes a delegate on the thread that the control\'s handle was created on, normally this would be the GUI

SetupDiGetDeviceProperty usage example

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问题 Can anybody provide me with an example of using SetupDiGetDeviceProperty ? 回答1: The following code #include <windows.h> #include <devguid.h> // for GUID_DEVCLASS_CDROM etc #include <setupapi.h> #include <cfgmgr32.h> // for MAX_DEVICE_ID_LEN, CM_Get_Parent and CM_Get_Device_ID #define INITGUID #include <tchar.h> #include <stdio.h> //#include "c:\WinDDK\7600.16385.1\inc\api\devpkey.h" // include DEVPKEY_Device_BusReportedDeviceDesc from WinDDK\7600.16385.1\inc\api\devpropdef.h #ifdef DEFINE

Get information about disk drives result on windows7 - 32 bit system

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问题 When i run the below code on windows XP - 32 , i get the below result. i have plugged only one usb pen drive On Windows XP - 32 Bit ----------------------- Drive C: ProductId: ST3160215AS ProductRevision: 3.AAD DeviceType: 7, DeviceNumber: 0, PartitionNumber: 1 DevicePath: \\\\?\\ide#diskst3160215as_____________________________3.aad___#5&2 7db0ed4&0&0.0.0#{53f56307-b6bf-11d0-94f2-00a0c91efb8b} Class: DiskDrive Hardware ID: IDE\\DiskST3160215AS_____________________________3.AAD___ Friendly

page.DataContext not inherited from parent Frame?

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问题 I have a Page page in a Frame frame , with frame.DataContext = \"foo\" . (page.Parent as Frame).DataContext is \"foo\" . ok BindingExpression for page.DataContext is null (also forced with ClearValue). ok page.DataContext is null . but I expected \"foo\"! Why isn\'t the DataContext inherited? As far as I understand the Frame sandboxes the content. But I couldn\'t find any documentation of this behavior - can anyone point me to a place where this is mentioned? 回答1: To answer your question

Why is the console window closing immediately once displayed my output?

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问题 I\'m studying C# by following the guides in MSDN . Now, I just tried the Example 1 (here is the link to MSDN ), and I\'ve encountered an issue: why is the console window closing immediately once displayed my output? using System; public class Hello1 { public static int Main() { Console.WriteLine(\"Hello, World!\"); return 0; } } 回答1: the issue here is that their Hello World Program is showing up then it would immediately close. why is that? Because it's finished. When console applications