Script to list sln files in a directory and start user selected sln from powershell

Start-VisualStudio-fromsln.ps1

## Open sln in Visual Studio from the containing folder
function Start-VisualStudio([string]$folder)
{
    # Set folder to current directory if not specified
    if ([string]::IsNullOrWhiteSpace($folder))
    {
        $folder = $(Get-Location).Path
    }

    # Ensure folder path ends with a backslash
    if ($folder -notmatch '\\$')
    {
        $folder += '\'
    }

    # Get all sln files located in the directory tree
    # Use .NET API for faster file searching
    $SlnFiles = [System.IO.Directory]::EnumerateFiles($folder, "*.sln", [System.IO.SearchOption]::AllDirectories) | ForEach-Object { Get-Item $_ }

    # Convert to an array for counting
    $SlnFiles = @($SlnFiles)

    # If only one sln file exists, open it immediately
    if ($SlnFiles.Count -eq 1)
    {
        Invoke-Item $SlnFiles[0].FullName
        return
    }

    # Handle multiple sln files
    if ($SlnFiles.Count -gt 1)
    {
        Write-Host "`nMore than one vs solution file found!"

        # Create a formatted table with headers
        $slnOptions = for($i = 0; $i -lt $SlnFiles.Count; $i++)
        {
            [PSCustomObject]@{
                'Opt'           = "${i}: "
                'Solution Name' = $SlnFiles[$i].Name
                'Solution Path' = $SlnFiles[$i].Directory
            }
        }

        # Display the table
        $slnOptions | Format-Table -AutoSize

        # Get user selection
        $input = Read-Host "Select a Solution to startup (q to quit)"
        
        # Validate user input
        if ($input -match '^\d+$' -and [int]$input -ge 0 -and [int]$input -lt $SlnFiles.Count)
        {
            Invoke-Item $SlnFiles[$input].FullName
        }
        else
        {
            Write-Host "Invalid selection, quitting."
        }
    }
}

# Short alias function
function vs {
    param(
        [string]$folder
    )
 
    Start-VisualStudio -folder $folder
}