Formatting - at once - all the files in a Visual Studio project

The Format All Files extension worked for me. Nothing to do, just install and click!

Tim Abell wrote a macro to do this on his blog:

Here's a handy macro script for visual studio I knocked together today. It runs "edit, format document" on every document of the listed file types.

You have to keep an eye on it as it's interactive and does sometimes pop up a message and wait for an answer.

You can get the vb file at https://github.com/timabell/vs-formatter-macro More info at https://github.com/timabell/vs-formatter-macro/wiki

The original code is available at the blog post. Note that this is older than the version available on github above.

Note, that the following solution does not work by itself starting with Visual Studio 2015. You need to apply the answer by Marcus Mangelsdorf as well. Then, this script works in Visual Studio 2015 and 2017.

Phil Haack outlined a good procedure - adding a reusable script to indent the project.

Open your NuGet profile for edition

1. Open the Package Manager;
2. Type $profile to see the location of your NuGet profile;
3. Type mkdir –force (split-path $profile) to create the profile's folder if it does not exist;
4. Edit the profile with the command notepad $profile.

Add the reusable method to the NuGet profile

Phil used davidfowl's Format-Document method which he found at https://gist.github.com/davidfowl/984358:

# Function to format all documents based on https://gist.github.com/984353
function Format-Document {
    param(
        [parameter(ValueFromPipelineByPropertyName = $true)]
        [string[]]$ProjectName
    )
    Process {
        $ProjectName | %{ 
                        Recurse-Project -ProjectName $_ -Action { param($item)
                        if($item.Type -eq 'Folder' -or !$item.Language) {
                            return
                        }

                        $window = $item.ProjectItem.Open('{7651A701-06E5-11D1-8EBD-00A0C90F26EA}')
                        if ($window) {
                            Write-Host "Processing `"$($item.ProjectItem.Name)`""
                            [System.Threading.Thread]::Sleep(100)
                            $window.Activate()
                            $Item.ProjectItem.Document.DTE.ExecuteCommand('Edit.FormatDocument')
                            $Item.ProjectItem.Document.DTE.ExecuteCommand('Edit.RemoveAndSort')
                            $window.Close(1)
                        }
                    }
        }
    }
}

function Recurse-Project {
    param(
        [parameter(ValueFromPipelineByPropertyName = $true)]
        [string[]]$ProjectName,
        [parameter(Mandatory = $true)]$Action
    )
    Process {
        # Convert project item guid into friendly name
        function Get-Type($kind) {
            switch($kind) {
                '{6BB5F8EE-4483-11D3-8BCF-00C04F8EC28C}' { 'File' }
                '{6BB5F8EF-4483-11D3-8BCF-00C04F8EC28C}' { 'Folder' }
                default { $kind }
            }
        }

        # Convert language guid to friendly name
        function Get-Language($item) {
            if(!$item.FileCodeModel) {
                return $null
            }

            $kind = $item.FileCodeModel.Language
            switch($kind) {
                '{B5E9BD34-6D3E-4B5D-925E-8A43B79820B4}' { 'C#' }
                '{B5E9BD33-6D3E-4B5D-925E-8A43B79820B4}' { 'VB' }
                default { $kind }
            }
        }

        # Walk over all project items running the action on each
        function Recurse-ProjectItems($projectItems, $action) {
            $projectItems | %{
                $obj = New-Object PSObject -Property @{
                    ProjectItem = $_
                    Type = Get-Type $_.Kind
                    Language = Get-Language $_
                }

                & $action $obj

                if($_.ProjectItems) {
                    Recurse-ProjectItems $_.ProjectItems $action
                }
            }
        }

        if($ProjectName) {
            $p = Get-Project $ProjectName
        }
        else {
            $p = Get-Project
        }

        $p | %{ Recurse-ProjectItems $_.ProjectItems $Action } 
    }
}

# Statement completion for project names
Register-TabExpansion 'Recurse-Project' @{
    ProjectName = { Get-Project -All | Select -ExpandProperty Name }
}

Reopen Visual Studio to use the command

When you reopen Visual Studio, the command is available.

Simply run it from the NuGet Package Manager Console: Format-Document This will re-format all files of the selected project.
To apply to the whole solution, use the command Get-Project -All | Format-Document, which lists the projects and then for each of them calls the reformatting command.

As the author put it:

With this in place, you can now indulge your OCD and run the Format-Document command to clean up your entire solution. I just ran it against <Project> and now can become the whitespace Nazi I’ve always wanted to be.

10/10, would run again.

Additional step needed for Visual Studio 2015

Phil Haack's solution posted by ANeves is perfect, but for some reason $item.FileCodeModel.Language always returns null in Visual Studio 2015 making the Format-Document skip all files and effectively do nothing.

To (hackily) work around this limitation you can replace the Get-Language function:

# Convert language guid to friendly name
function Get-Language($item) {
    if(!$item.FileCodeModel) {
        return $null
    }

    $kind = $item.FileCodeModel.Language
    switch($kind) {
        '{B5E9BD34-6D3E-4B5D-925E-8A43B79820B4}' { 'C#' }
        '{B5E9BD33-6D3E-4B5D-925E-8A43B79820B4}' { 'VB' }
        default { $kind }
    }
}

with the following variant that uses the file's extension instead of the Language GUID:

# Convert file extension to friendly language name
function Get-Language($item) {
   if(!$item.FileCodeModel) {
       return $null
   }

   $filename = $item.Name
   $ext = $filename.substring($filename.lastindexof('.'),
                              ($filename.length - $filename.lastindexof('.')))
   switch($ext) {
       '.cs' { 'C#' }
       '.vb' { 'VB' }
       # If you want to prevent re-formatting files that are not VB or C# source files 
       # (e.g. XML files in your project etc.), replace the following line with 
       # "default { $null }" (thanks to HHenn for this suggestion!)
       default { $ext }
   }            
}