functions/Get-DbaCustomError.ps1

#ValidationTags#Messaging,FlowControl,CodeStyle#
function Get-DbaCustomError {
<#
    .SYNOPSIS
        Gets SQL Custom Error Message information for each instance(s) of SQL Server.
         
    .DESCRIPTION
        The Get-DbaCustomError command gets SQL Custom Error Message information for each instance(s) of SQL Server.
         
    .PARAMETER SqlInstance
        SQL Server name or SMO object representing the SQL Server to connect to. This can be a collection and receive pipeline input to allow the function
        to be executed against multiple SQL Server instances.
         
    .PARAMETER SqlCredential
        Login to the target instance using alternative credentials. Windows and SQL Authentication supported. Accepts credential objects (Get-Credential)
         
    .PARAMETER EnableException
        By default, when something goes wrong we try to catch it, interpret it and give you a friendly warning message.
        This avoids overwhelming you with "sea of red" exceptions, but is inconvenient because it basically disables advanced scripting.
        Using this switch turns this "nice by default" feature off and enables you to catch exceptions with your own try/catch.
         
    .NOTES
        Tags: Error, CustomError
        Author: Garry Bargsley (@gbargsley), http://blog.garrybargsley.com
         
        dbatools PowerShell module (https://dbatools.io, clemaire@gmail.com)
        Copyright: (c) 2018 by dbatools, licensed under MIT
        License: MIT https://opensource.org/licenses/MIT
         
    .LINK
        https://dbatools.io/Get-DbaCustomError
         
    .EXAMPLE
        PS C:\> Get-DbaCustomError -SqlInstance localhost
         
        Returns all Custom Error Message(s) on the local default SQL Server instance
         
    .EXAMPLE
        PS C:\> Get-DbaCustomError -SqlInstance localhost, sql2016
         
        Returns all Custom Error Message(s) for the local and sql2016 SQL Server instances
         
#>

    [CmdletBinding()]
    param (
        [parameter(Position = 0, Mandatory, ValueFromPipeline)]
        [DbaInstanceParameter]$SqlInstance,
        [PSCredential]$SqlCredential,
        [Alias('Silent')]
        [switch]$EnableException
    )

    process {
        foreach ($instance in $SqlInstance) {
            Write-Message -Level Verbose -Message "Connecting to $instance"
            try {
                $server = Connect-SqlInstance -SqlInstance $instance -SqlCredential $SqlCredential
            }
            catch {
                Stop-Function -Message "Failure" -Category ConnectionError -ErrorRecord $_ -Target $instance -Continue
            }

            foreach ($customError in $server.UserDefinedMessages) {
                Add-Member -Force -InputObject $customError -MemberType NoteProperty -Name ComputerName -value $customError.Parent.ComputerName
                Add-Member -Force -InputObject $customError -MemberType NoteProperty -Name InstanceName -value $customError.Parent.ServiceName
                Add-Member -Force -InputObject $customError -MemberType NoteProperty -Name SqlInstance -value $customError.Parent.DomainInstanceName

                Select-DefaultView -InputObject $customError -Property ComputerName, InstanceName, SqlInstance, ID, Text, LanguageID, Language
            }
        }
    }
}