Get-MgmtGraphGroupMemberCount

MgmtGraph: Retrieves group member counts by type

Script

#Requires -Version 5.1
#Requires -Modules Microsoft.Graph.Groups

[CmdletBinding()]
Param (
    [Parameter(Mandatory = $true, Position = 0)]
    [string]$GroupId,

    [ValidateSet('AsApplication', 'AsDevice', 'AsGroup', 'AsOrgContact', 'AsServicePrincipal', 'AsUser')]
    [string]$ResultType
)

Process {
    try {
        $params = @{
            'GroupId'          = $GroupId
            'ConsistencyLevel' = 'eventual'
            'ErrorAction'      = 'Stop'
        }

        $count = $null

        if ($ResultType) {
            switch ($ResultType) {
                'AsApplication' {
                    $count = Get-MgGroupMemberCountAsApplication @params
                }
                'AsDevice' {
                    $count = Get-MgGroupMemberCountAsDevice @params
                }
                'AsGroup' {
                    $count = Get-MgGroupMemberCountAsGroup @params
                }
                'AsOrgContact' {
                    $count = Get-MgGroupMemberCountAsOrgContact @params
                }
                'AsServicePrincipal' {
                    $count = Get-MgGroupMemberCountAsServicePrincipal @params
                }
                'AsUser' {
                    $count = Get-MgGroupMemberCountAsUser @params
                }
            }
        }
        else {
            $count = Get-MgGroupMemberCount @params
        }

        $result = [PSCustomObject]@{
            GroupId     = $GroupId
            TypeFilter  = if ($ResultType) { $ResultType } else { 'All' }
            MemberCount = $count
            Timestamp   = Get-Date -Format "yyyy-MM-dd HH:mm:ss"
        }

        Write-Output $result
    }
    catch {
        throw
    }
}

Customize

GroupId string

The unique identifier of the Microsoft Graph group.

ResultType string

Optional. The type of group members to count. Supported values: AsApplication, AsDevice, AsGroup, AsOrgContact, AsServicePrincipal, AsUser.