Monday, 20 October 2014

Validating SharePoint file names in JavaScript

SharePoint limits the valid characters of file names, which can be a problem, so to prevent this issue, we use this function to validated filenames in our Web App that integrates with SharePoint.

var validateFileName = function (value){

var specialCharacters = new RegExp("[\\\\\/:*?\"<>|#{}%~&]");

if (specialCharacters.test(value)) {      
 return true;
 return false;

Only thing to note is that \\\\ is needed to represent \ in the regular expression, see this for more details

Tuesday, 30 September 2014

TIL - Format Guids to string in C#

Too long to explain, oh yes, it was SharePoint related, but I learnt today about various options for formatting Guids available in the framework:

Shameless copy and paste from this page.

Format of return value
32 digits:
32 digits separated by hyphens:
32 digits separated by hyphens, enclosed in braces:
32 digits separated by hyphens, enclosed in parentheses:
Four hexadecimal values enclosed in braces, where the fourth value is a subset of eight hexadecimal values that is also enclosed in braces:

So crmRecord.Id.ToString("N").ToUpperInvariant() results in : "7AD6FAB54528E411940D005056BC69C8"

Friday, 26 September 2014

TIL - Set EventId when Logging to the Event Log with Log4net

I used to be a fan of the Enterprise Library, but lately I've found myself using Log4net instead, which is not bad.

We wanted to log fatal errors to the event log, which can be easily done by configuring a trace listener, however we also wanted control over the event id displayed in the event log to allow meaningful monitoring

Turns out it's pretty simple:
log4net.ThreadContext.Properties["EventID"] = 1337;log.ErrorFormat("Elite Exception: {0}.",  ex); 

Tuesday, 23 September 2014

TIL - Create Scheduled Tasks with parameters using schtasks

Today I had to create a couple of schedule task to run this application I wrote, the problem was that when I did this:
schtasks /create /sc daily /tn "Application" /TR "'c:\Program Files (x86)\Application\Application.exe -t'" /ST 00:30:00 /RU user /RP password 
It created a task but then when it started, it would not actually run nor stop, so after a bit of googling and a few tries i came up with this
schtasks /create /sc daily /tn "Application" /TR "'c:\Program Files (x86)\Application\Application.exe' -t" /ST 00:30:00 /RU user /RP password 
Note how the command, in bold, is surrounded by single quotes and the whole, i.e. command and parameters is surrounded by double quotes, so this will run Application.exe with parameter -t @ 00:30 everyday
Hope it helps.

Monday, 22 September 2014

Remove Users from group in SharePoint 2013 from Client Object model.

This is the method that we use to remove users from groups in Sharepoint 2013

It's a bit more convoluted than it needs to be as for some reason Sharepoint 2013 appends the claim provider to the username, which means that rather than having:
we have something like:
so in order to ensure that the it will always find the relevant user, we do the extra call to ResolvePrincipal.

using Microsoft.SharePoint.Client;
using Microsoft.SharePoint.Client.Utilities;

     public bool RemoveUser(string url, string groupName, string userName)  
       using (ClientContext context = new ClientContext(url))  
         var principal = Utility.ResolvePrincipal(context, context.Web, userName, PrincipalType.User,  
           PrincipalSource.All, context.Web.SiteUsers, false);  
         if (principal.Value != null)  
           string login = principal.Value.LoginName;  
           GroupCollection siteGroups = context.Web.SiteGroups;  
           Group group = siteGroups.GetByName(groupName);  
           var query = context.LoadQuery(group.Users.Where(usr => usr.LoginName == login).Include(u => u.LoginName));  
           User user = query.SingleOrDefault();  
           if (user != null)  
           return true;               
       return false;  

Monday, 1 September 2014

Product Versions in MSI installers created with WIX - part 2

In a previous post I described how to change the version of MSI installers created with WiX.

This post discusses a way of linking the version number of an assembly (library, dll, executable) to the product version.

This is more suited to a library/framework, where you want to ensure that the product version is the same as the library/framework.
  1. On the library project, edit the AssemblyInfo.cs file:

  2. Remove these two lines:
    [assembly: AssemblyVersion("")]
    [assembly: AssemblyFileVersion("")]
  3. Create a new File called VersionInfo.cs on the Properties folder.

  4. Contents of file should be:
    [assembly: System.Reflection.AssemblyVersion("0.0.0.*")]
  5. Edit the project file (you'll need to unload the project if you want to do it from Visual Studio) and at the end, you'll find a commented out section. Get rid of it (everything between <!-- -->) and add the following:
  6. <Target Name="BeforeBuild"> < <WriteLinesToFile Condition=" '$(Version)' != '' " File="Properties\VersionInfo.cs" Overwrite="True" Lines="[assembly: System.Reflection.AssemblyVersion(&quot;$(Version)&quot;)] // Auto-generated by build process" /> </ </Target>
  7. On the product.wxs file on your WiX project, just add the following:
  8. <Product Id="12c0deff-c0de-c0de-c0de-123f422c0dea" Name="Name" Language="1033" Version ="!(bind.FileVersion.filAB3D3C60ED5901936249D5C56B6C90A6)" Manufacturer="ManyRootsofallevil" UpgradeCode="fafffaff-c0de-c0de-c0de-123f422c0dea">
    Where filAB3D3C60ED5901936249D5C56B6C90A6 is the id of your library file
  9. Finally, add the following to the wix project. Make sure this is on the initial PropertyGroup Element:
  10. <Version Condition=" '$(Version)' == ''"></Version>
You can now build this using:

msbuild solution.sln /p:Version=

Friday, 29 August 2014

TIL - Copy References in GAC to output folder

A while back I had this problem, looks like there is a simple solution:

<Reference Include="DocumentFormat.OpenXml, Version=2.5.5631.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
 <Private>True</Private> <HintPath>..\..\..\OpenXml SDK 2.5\DocumentFormat.OpenXml.dll</HintPath>
Setting <Private>True</Private> ensures that the reference is copied to the output folder, looks like setting it to Copy Local, just doesn't do the trick

Thursday, 21 August 2014

TIL - DeploymentItem files not copied in MSTest

I have a set of unit tests that need an xml file to work  and I despite me using the DeploymentItem attribute the test was not working.

Turns out that DeploymentItem will only copy from the build directory, so I set the Copy to Output Directory property of the file to Copy always:

Monday, 18 August 2014

Product Versions in MSI installers created with WIX - part 1

I must confess that in the past I used to do this manually or not at all (loud gasps) as I've never had a fully functioning CI environment but, this has changed recently so here it goes.

In essence the challenge is to change the version number of the installer every time a new build is done, so that the build number is reflected in both Windows (Control Panel -> Programs and Features ) and the file itself, e.g. installer.

There are two main ways of doing this, that I know of:
  • Pass the build number to the Wix Installer.
  • Get the build number from a library or executable.

In this post, I will discuss the first way, all changes unless stated are made to the wix project file (wixproj extension), so you will need to unload the project from Visual Studio or use another editor to make these changes.

We need a Property to hold the version number, which appropriately is called VersionNumber, I've made sure that this is populated with a default value, in case the build is done from Visual Studio.
<VersionNumber Condition=" '$(VersionNumber)' == '' "></VersionNumber>
I then appended the version number to the installer:
We then need to add a preprocessor variable to each build configuration, I've called it MSIVersion, as this is the version of the msi package:
and finally we use this preprocessor variable in the product definition in the Product.wxs file.
<Product Id="01010101-deaf-beef-c0de-863f442f44fb" Name="MROAE" Language="1033" Version="$(var.MSIVersion)" Manufacturer="MROAE" UpgradeCode="01010101-daaa-beef-c0de-863f442f44fb">
This solution can now be build with the following command:
msbuild mysolution.sln /p:VersionNumber=
A sample wixproj file can be found below with changes detailed above:

<?xml version="1.0" encoding="utf-8"?>
<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="">
    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
    <Platform Condition=" '$(Platform)' == '' ">x86</Platform>
    <WixTargetsPath Condition=" '$(WixTargetsPath)' == '' AND '$(MSBuildExtensionsPath32)' != '' ">$(MSBuildExtensionsPath32)\Microsoft\WiX\v3.x\Wix.targets</WixTargetsPath>
    <WixTargetsPath Condition=" '$(WixTargetsPath)' == '' ">$(MSBuildExtensionsPath)\Microsoft\WiX\v3.x\Wix.targets</WixTargetsPath>
    <VersionNumber Condition=" '$(VersionNumber)' == '' "></VersionNumber>
  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|x86' ">
  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|x86' ">
    <Compile Include="Service.wxs" />
    <Compile Include="Product.wxs" />
    <ProjectReference Include="..\Service\Service.csproj">
    <Content Include="Icons\Product.ico" />
    <Folder Include="Icons" />
    <WixExtension Include="WixUtilExtension">
  <Import Project="$(WixTargetsPath)" />
 To modify your build process, add your task inside one of the targets below and uncomment it.
 Other similar extension points exist, see Wix.targets.
 <Target Name="BeforeBuild">
 <Target Name="AfterBuild">

And the Product File(product.wxs)

<Product Id="01010101-deaf-beef-c0de-8f3f4a2f44fb" Name="MROAE" Language="1033"
Version="$(var.MSIVersion)" Manufacturer="MROAE" 

Monday, 11 August 2014

Uninstall MSI from command line

From a command prompt, run with elevated permissions:
msiexec /x {ba5eba11-deaf-beef-ce11-ca5e1337c0de} /qn
where {ba5eba11-deaf-beef-ce11-ca5e1337c0de} is the product code of the application you want to uninstall.

From PowerShell, run with elevated permissions:
msiexec /x "{ba5eba11-deaf-beef-ce11-ca5e1337c0de}" /qn
If you don't know the product code you can get it from the registry, using wmic or from PowerShell using the following command:
gwmi -Class win32_product | ?{$_.Name -match "product name"}
For 7-zip the product code is:

PS C:\Users\Bob> gwmi -Class win32_product | ?{$_.Name -match "7-zip"}

IdentifyingNumber : {23170F69-40C1-2702-0920-000001000000}
Name              : 7-Zip 9.20 (x64 edition)
Vendor            : Igor Pavlov
Version           :
Caption           : 7-Zip 9.20 (x64 edition)