How to build all solutions in a particular location

Clear-Host
Write-Host "Please make sure you do not have any instances of Visual studio running before running the script..." -ForegroundColor Red -BackgroundColor White
Write-Host "You have 10 seconds" -ForegroundColor Red -BackgroundColor White
Start-Sleep -s 10
#Directory where all the projects are stored.
$baseDirectory = "D:\Development\user1\SampleApp"
# if you want to specify some solution files then add the in the SolutionConfig.txt
#$solutionFilesPath = "$baseDirectory\SolutionConfig.txt"
$solutionFilesPath = "D:\Development\user1\SolutionConfig.txt"
$projectFiles = Get-Content $solutionFilesPath
echo $projectFiles
$msbuild = "C:\WINDOWS\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
$MSBuildLogger="/flp1:Append;LogFile=Build.log;Verbosity=Normal; /flp2:LogFile=BuildErrors.log;Verbosity=Normal;errorsonly"
$devenv = "C:\Program Files\Microsoft Visual Studio 10.0\Common7\IDE\devenv.exe"
$action = "Y"
# $env:Path = $env:Path + ";C:\Program Files\Microsoft SDKs\Windows\v7.0A"
Write-Host "Starting to Build the Project" -ForegroundColor Red -BackgroundColor White
foreach($projectFile in $projectFiles)
{
    if ($projectFile.EndsWith(".sln"))
    {

 Write-Host "$projectFile"
 Write-Host "Find Solution Files " -ForegroundColor Blue -BackgroundColor White
       # $projectFileAbsPath = "$baseDirectory\$projectFile"
         $projectFileAbsPath=$projectFile
        $filename = [System.IO.Path]::GetFileName($projectFile);
        $action = "Y" 
        while($action -eq "Y")
        {
            if(Test-Path $projectFileAbsPath)
            {
                Write-Host "Building $projectFileAbsPath"
                & $msbuild $projectFileAbsPath /t:rebuild /p:PlatformTarget=x86 /fl "/flp1:logfile=$baseDirectory\msbuild.log;Verbosity=Normal;Append;" "/flp2:logfile=$baseDirectory\errors.txt;errorsonly;Append;"
                #& $devenv $projectFileAbsPath /Rebuild
               
                if($LASTEXITCODE -eq 0)
                {
                    Write-Host "Build SUCCESS" -ForegroundColor Green
                    #Clear-Host
                    break
                }
                else
                {
                    Write-Host "Build FAILED" -ForegroundColor Red
                   
                    $action = Read-Host "Enter Y to Fix then continue, N to Terminate, I to Ignore and continue the build"
                   
                    if($action -eq "Y")
                    {
                        & $devenv $projectFileAbsPath
                        wait-process -name devenv   
                    }
                    else
                    {
                        if($action -eq "I")
                        {
                            Write-Host "Ignoring build failure..."
                            break
                        }
                        else
                        {
                            Write-Host "Terminating Build... Please restart the build once the issue is fixed." -ForegroundColor Red
                            break
                        }
                    }
                }
            }
            else
            {
                Write-Host "File does not exist : $projectFileAbsPath"
                Start-Sleep -s 5
                break
            }
        }
       
        if($action -eq "N")
        {
            break;
        }
       
    }
Start-Sleep -s 100
 }