function Invoke-QueryByConnectionString {

    param (
        [Parameter(Mandatory = $true)]
        [string]$ConnectionString,

        [Parameter(Mandatory = $true)]
        [string]$QueryString
    )

    $logLead = Get-LogLeadName
    $conn = New-Object System.Data.SqlClient.SqlConnection

    try {

        $conStrBuilder = New-Object System.Data.SqlClient.SqlConnectionStringBuilder($ConnectionString)

    } catch [System.Management.Automation.MethodException] {

        Write-Warning "$logLead : Provided connection string [$ConnectionString] is invalid.  Execution cannot continue."
        return $null
    }

    $conn.ConnectionString = $conStrBuilder.ToString()
    Write-Verbose ("$logLead : Connecting to database with connection string {0}" -f $conStrBuilder.ToString())

    if (-not (Confirm-DatabaseAccess -ConnectionString $conStrBuilder.ToString())) {
        Write-Error "$logLead : You can not connect to the database server, do you have access and is it online?"
        return
    }

    $handler = [System.Data.SqlClient.SqlInfoMessageEventHandler] {
        param($sender, $event)
        Write-Host $event.Message
    };

    try {

        $conn.add_InfoMessage($handler);
        $conn.FireInfoMessageEventOnUserErrors = $true

        $conn.Open()
        $query = New-Object System.Data.SqlClient.SqlCommand($QueryString, $conn)
        $reader = $query.ExecuteReader()

        $allResults = New-Object -TypeName "System.Collections.ArrayList"
        do {
            $currentResults = @()
            $columns = @()
            for ($i = 0; $i -lt $reader.FieldCount; $i++) {
                $columns += $reader.GetName($i)
            }
            while ($reader.Read()) {
                $rowResult = @{}
                for ($i = 0; $i -lt $reader.FieldCount; $i++) {
                    if ($reader.IsDBNull($i)) {
                        $rowResult[$columns[$i]] = $null
                    } else {
                        $rowResult[$columns[$i]] = $reader[$i]
                    }
                }
                $currentResults += $rowResult
            }
            $allResults.Add($currentResults) | Out-Null
        } while ($reader.NextResult())

        return $allResults

    } catch {

        Write-Warning "$logLead : An exception occurred while trying to execute the specified query against the database"
        Write-Warning "$logLead : $($_.ToString())"
        Write-Warning "$logLead : $($_.ScriptStackTrace)"
        return $null

    } finally {

        if (($null -ne $conn) -and ($conn.State -ne [System.Data.ConnectionState]::Closed)) {

            $conn.Close()
        }

        $conn = $null
    }
}