Open-SolutionFile.ps1

# https://gist.github.com/ap0llo/4e3b173afe6ca23299add223396de165

function Open-SolutionFile([string]$Name) {

    if (($null -ne $Name) -and ($Name -ne "")) {        
        $slnFiles = Get-ChildItem -File *.sln -Recurse | Where-Object { $_.Name -like "*$Name*" }
    } else {
        $slnFiles = Get-ChildItem -File *.sln -Recurse
    }

    $count = ($slnFiles | Measure-Object).Count

    if ($count -eq 0) {
        throw "No solution files found"
    }
    elseif ($count -eq 1) {
        Start-Process $slnFiles.FullName
    }
    else {

        Write-Host " "
        $i = 0
        foreach ($file in $slnFiles) {
            Write-Host " $i - $($file.Name)"
            $i = $i + 1
        }
        Write-Host " A - Open all solutions"
        Write-Host " "


        while ($true) {

            $selection = Read-Host "Enter id of solution to open"

            if ($selection -like "A") {
                foreach ($item in $slnFiles) {
                    Start-Process $item.FullName
                }
            }
            else {

                $index = $selection -as [int]

                if (($null -ne $index) -and ($index -lt $count) -and ($index -ge 0)) {
                    Start-Process ($slnFiles[$index]).FullName
                    break
                }
                else {
                    Write-Error "Invalid input '$selection' "
                }
            }
        }
    }
}

Set-Alias sln Open-SolutionFile