Use ListDashboards with an Amazon SDK or command line tool

    /// <summary>
    /// Get a list of dashboards.
    /// </summary>
    /// <returns>A list of DashboardEntry objects.</returns>
    public async Task<List<DashboardEntry>> ListDashboards()
    {
        var results = new List<DashboardEntry>();
        var paginateDashboards = _amazonCloudWatch.Paginators.ListDashboards(
            new ListDashboardsRequest());
        // Get the entire list using the paginator.
        await foreach (var data in paginateDashboards.DashboardEntries)
        {
            results.Add(data);
        }

        return results;
    }

    public static void listDashboards(CloudWatchClient cw) {
        try {
            ListDashboardsIterable listRes = cw.listDashboardsPaginator();
            listRes.stream()
                    .flatMap(r -> r.dashboardEntries().stream())
                    .forEach(entry -> {
                        System.out.println("Dashboard name is: " + entry.dashboardName());
                        System.out.println("Dashboard ARN is: " + entry.dashboardArn());
                    });

        } catch (CloudWatchException e) {
            System.err.println(e.awsErrorDetails().errorMessage());
            System.exit(1);
        }
    }

suspend fun listDashboards() {
    CloudWatchClient { region = "us-east-1" }.use { cwClient ->
        cwClient.listDashboardsPaginated({})
            .transform { it.dashboardEntries?.forEach { obj -> emit(obj) } }
            .collect { obj ->
                println("Name is ${obj.dashboardName}")
                println("Dashboard ARN is ${obj.dashboardArn}")
            }
    }
}

Example 1: Returns the collection of dashboards for your account.

Get-CWDashboardList

Output:

DashboardArn DashboardName LastModified        Size
------------ ------------- ------------        ----
arn:...      Dashboard1    7/6/2017 8:14:15 PM 252

Example 2: Returns the collection of dashboards for your account whose names start with the prefix 'dev'.

Get-CWDashboardList -DashboardNamePrefix dev