If you're spinning up a WCF service for testing in Visual Studio and you get the message "Could not establish trust relationship for the SSL/TLS secure channel with authority 'localhost:XXXXX'" then there is a simple 2 minute fix.
Delradie's Dev
General postings on bits and pieces of ASP.net and other Microsoft development that may be of use out there
Tuesday 20 September 2016
Could not establish trust relationship for the SSL/TLS secure channel with authority XXXX
If you're spinning up a WCF service for testing in Visual Studio and you get the message "Could not establish trust relationship for the SSL/TLS secure channel with authority 'localhost:XXXXX'" then there is a simple 2 minute fix.
Thursday 27 March 2014
Free Training For Life
Wednesday 13 June 2012
Please support the campaign to save lennox
If you care about animals and are as gobsmacked as me by the groundless adherance to the letter of the unjust Breed Specific Legislation in Belfast then please sign the petition to save lennox - condemned to be destroyed for basically looking like a dog that wouldn't necessarily be dangerous anyway - http://www.petitiononline.com/
http://www.savelennox.co.uk/ for more - please spread the word and try and get this ruling overturned
Tuesday 12 June 2012
Microsoft conferences online
The conferences do have different focuses, but these days you will normally find something on most subjects at any of the conferences.
Teched (which is running now, at the time I write this post) - this one is normally quite heavy on IT, but with some interesting dev pieces in there
- This year's sessions - http://channel9.msdn.com/Events/TechEd/NorthAmerica/2012
- Archive back to 2008 - http://channel9.msdn.com/Events/TechEd
The Professional Developer Conference (PDC) - the key's in the name - for devs mainly, was the forerunner to Build - Archives from 1991 to 2010 are at http://channel9.msdn.com/Events/PDC
MIX - mainly for designers tho with some dev in there aswell - archives from 2006 to 2011 are at http://channel9.msdn.com/Events/MIX
These are all worth a look through - there are 1000s of hours of the best insight to working with the MS platforms you could possibly hope for.
Enjoy
Sunday 26 February 2012
Accessing Printer Status using WinSpool in C#
After help from ambience I’ve managed to get the code working to access accurate printer status by using DllImport to access Winspool.drv (as opposed to using WMI, which had very mixed results).
There are 3 key functions you need to be aware of:
- OpenPrinter
- GetPrinter
- ClosePrinter
The GetPrinter function is the one that does the real work we are interested in – accessing the PrinterInfo2 structure that gives you all the information you could possibly want on your named printer – driver, status, configuration, etc
Once you have the PrinterInfo2 you can than use bitwise operators along with known constants to find out the current status of the printer. One thing to note is that to detect whether a printer is marked as offline rather than physically offline you need to check the Attributes rather than Status – I’ll put a followup post shortly with details of a Helper class round the PrinterInfo2 status.
Here’s the code to help you out if, like me you need to get accurate printer info in C#:
//Code written by Mark Middlemist - @delradie //Made available at http://delradiesdev.blogspot.com //Interop details from http://pinvoke.net/ using System; using System.Runtime.InteropServices; namespace DelradiesDev.PrinterStatus { public class WinSpoolPrinterInfo { [DllImport("winspool.drv", CharSet = CharSet.Auto, SetLastError = true)] public static extern int OpenPrinter(string pPrinterName, out IntPtr phPrinter, ref PRINTER_DEFAULTS pDefault); [DllImport("winspool.drv", SetLastError = true, CharSet = CharSet.Auto)] public static extern bool GetPrinter(IntPtr hPrinter, Int32 dwLevel, IntPtr pPrinter, Int32 dwBuf, out Int32 dwNeeded); [DllImport("winspool.drv", SetLastError = true)] public static extern int ClosePrinter(IntPtr hPrinter); [StructLayout(LayoutKind.Sequential)] public struct PRINTER_DEFAULTS { public IntPtr pDatatype; public IntPtr pDevMode; public int DesiredAccess; } [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Auto)] public struct PRINTER_INFO_2 { [MarshalAs(UnmanagedType.LPTStr)] public string pServerName; [MarshalAs(UnmanagedType.LPTStr)] public string pPrinterName; [MarshalAs(UnmanagedType.LPTStr)] public string pShareName; [MarshalAs(UnmanagedType.LPTStr)] public string pPortName; [MarshalAs(UnmanagedType.LPTStr)] public string pDriverName; [MarshalAs(UnmanagedType.LPTStr)] public string pComment; [MarshalAs(UnmanagedType.LPTStr)] public string pLocation; public IntPtr pDevMode; [MarshalAs(UnmanagedType.LPTStr)] public string pSepFile; [MarshalAs(UnmanagedType.LPTStr)] public string pPrintProcessor; [MarshalAs(UnmanagedType.LPTStr)] public string pDatatype; [MarshalAs(UnmanagedType.LPTStr)] public string pParameters; public IntPtr pSecurityDescriptor; public uint Attributes; public uint Priority; public uint DefaultPriority; public uint StartTime; public uint UntilTime; public uint Status; public uint cJobs; public uint AveragePPM; } public PRINTER_INFO_2? GetPrinterInfo(String printerName) { IntPtr pHandle; PRINTER_DEFAULTS defaults = new PRINTER_DEFAULTS(); PRINTER_INFO_2? Info2 = null; OpenPrinter(printerName, out pHandle, ref defaults); Int32 cbNeeded = 0; bool bRet = GetPrinter(pHandle, 2, IntPtr.Zero, 0, out cbNeeded); if (cbNeeded > 0) { IntPtr pAddr = Marshal.AllocHGlobal((int)cbNeeded); bRet = GetPrinter(pHandle, 2, pAddr, cbNeeded, out cbNeeded); if (bRet) { Info2 = (PRINTER_INFO_2)Marshal.PtrToStructure(pAddr, typeof(PRINTER_INFO_2)); } Marshal.FreeHGlobal(pAddr); } ClosePrinter(pHandle); return Info2; } } }
Thursday 23 February 2012
Rebinding bug in WinForms ListBox when SelectionMode = None
It appears that there are a couple of issues with WinForms ListBoxes when the SelectionMode is None (certainly in .net 2).
One that is pretty well documented is that if your SelectionMode is None then you can get problems on closing the form (https://connect.microsoft.com/VisualStudio/feedback/details/189700/listbox-selectionmode-none-bug)
One I've just hit on is that if you rebind/refresh a listbox's contents by changing the datasource then the list is cleared and left blank
The workaround is very simple (based on the one from Connect) - before manipulating the DataSource property on the ListBox change the SelectionMode to one of the other values, do your work, then change it back to None
Hope this helps
Wednesday 3 August 2011
Adding MVC 3 to an asp.net web site
I've been starting to tool up on MVC, and while I won't cover that right now as there's no shortage of coverage on that, I wanted to cover one bit that seems slightly lacking in coverage, which is specifically adding MVC 3 to ASP.Net Websites (not web projects).
The most excellent Mr Hanselman has already done the vast majority of the work for anyone wanting to add mvc to asp.net (and in fact pretty much all of it if you're using a web application) with his AddMvc3ToWebForms Nuget Package
There are however a couple more steps needed to get it working with a web site rather than web project
1) Install the nuget package as normal, either by selecting AddMvc3ToWebForms from the online gallery in Visual Studio's "Add Library Package Reference" option (Tools > Library Package Manager > Add Library Package Reference), or by typing the command Install-Package AddMvc3ToWebForms in the Package Manager Console (Tools > Library Package Manager > Package Manager Console)
When I ran this I got an error at the end but as far as I can tell, this isn't actually a problem, but caused by it not having a csproj file to work with:
PM> Install-Package AddMvc3ToWebForms
'WebActivator (≥ 1.3)' not installed. Attempting to retrieve dependency from source...
Done.
Successfully installed 'WebActivator 1.3.2'.
Successfully installed 'AddMvc3ToWebForms 0.9.1'.
Successfully added 'WebActivator 1.3.2' to extranet.
Successfully added 'AddMvc3ToWebForms 0.9.1' to extranet.
Install-Package : Method invocation failed because [System.__ComObject] doesn't contain a method named 'Add'.
At line:1 char:16
+ Install-Package <<<< AddMvc3ToWebForms
+ CategoryInfo : NotSpecified: (:) [Install-Package], RuntimeException
+ FullyQualifiedErrorId : NuGetCmdletUnhandledException,NuGet.PowerShell.Commands.InstallPackageCommand
If you try and compile now it will fail, complaing of not being able to find MvcApplication1. This is because the view (cshtml) files it creates reference a standard namespace (MvcApplication1) that doesn't correspond to the ASP namespace in the created model/controller files. There is also the additional issue that in a web site the 'M&C' files should live under App_Code not in the rool directory.
2a) If you aren't interested in the initial files created by the package then you could simply create Models and Controllers directories under App_Code, delete the ones in the site root, and empty out the Views directory, then get on with your own coding
2b) If you do want to keep the Account/Home/Shared files that have been created then move the Models and Controllers files to App_Code
3) To resolve the namespace issue open up ChangePassword.cshtml, LogOn.cshtml, Register.cshtml in Views\Account and remove the 'MvcApplication1.' from the @model reference at the top
You should now be ready to roll - Enjoy