Review the New Project

import * as pulumi from "@pulumi/pulumi";
import * as resources from "@pulumi/azure-native/resources";
import * as storage from "@pulumi/azure-native/storage";

// Create an Azure Resource Group
const resourceGroup = new resources.ResourceGroup("resourceGroup");

// Create an Azure resource (Storage Account)
const storageAccount = new storage.StorageAccount("sa", {
    resourceGroupName: resourceGroup.name,
    sku: {
        name: storage.SkuName.Standard_LRS,
    },
    kind: storage.Kind.StorageV2,
});

// Export the primary key of the Storage Account
const storageAccountKeys = pulumi.all([resourceGroup.name, storageAccount.name]).apply(([resourceGroupName, accountName]) =>
    storage.listStorageAccountKeys({ resourceGroupName, accountName }));
export const primaryStorageKey = storageAccountKeys.keys[0].value;

import pulumi
from pulumi_azure_native import storage
from pulumi_azure_native import resources

# Create an Azure Resource Group
resource_group = resources.ResourceGroup("resource_group")

# Create an Azure resource (Storage Account)
account = storage.StorageAccount('sa',
    resource_group_name=resource_group.name,
    sku=storage.SkuArgs(
        name=storage.SkuName.STANDARD_LRS,
    ),
    kind=storage.Kind.STORAGE_V2)

# Export the primary key of the Storage Account
primary_key = pulumi.Output.all(resource_group.name, account.name) \
    .apply(lambda args: storage.list_storage_account_keys(
        resource_group_name=args[0],
        account_name=args[1]
    )).apply(lambda accountKeys: accountKeys.keys[0].value)

pulumi.export("primary_storage_key", primary_key)

package main

import (
    "github.com/pulumi/pulumi-azure-native/sdk/go/azure/resources"
	"github.com/pulumi/pulumi-azure-native/sdk/go/azure/storage"
    "github.com/pulumi/pulumi/sdk/v2/go/pulumi"
)

func main() {
    pulumi.Run(func(ctx *pulumi.Context) error {
        // Create an Azure Resource Group
        resourceGroup, err := resources.NewResourceGroup(ctx, "resourceGroup", nil)
        if err != nil {
            return err
        }

        // Create an Azure resource (Storage Account)
        account, err := storage.NewStorageAccount(ctx, "sa", &storage.StorageAccountArgs{
			ResourceGroupName: resourceGroup.Name,
			AccessTier:        storage.AccessTierHot,
			Sku: &storage.SkuArgs{
				Name: storage.SkuName_Standard_LRS,
			},
			Kind: storage.KindStorageV2,
        })
        if err != nil {
            return err
        }

        // Export the primary key of the Storage Account
		ctx.Export("primaryStorageKey", pulumi.All(resourceGroup.Name, account.Name).ApplyT(
			func(args []interface{}) (string, error) {
				resourceGroupName := args[0].(string)
				accountName := args[1].(string)
				accountKeys, err := storage.ListStorageAccountKeys(ctx, &storage.ListStorageAccountKeysArgs{
					ResourceGroupName: resourceGroupName,
					AccountName:       accountName,
				})
				if err != nil {
					return "", err
				}

				return accountKeys.Keys[0].Value, nil
			},
		))

        return nil
    })
}

using System.Threading.Tasks;
using Pulumi;
using Pulumi.AzureNative.Resources;
using Pulumi.AzureNative.Storage;
using Pulumi.AzureNative.Storage.Inputs;

class MyStack : Stack
{
    public MyStack()
    {
        // Create an Azure Resource Group
        var resourceGroup = new ResourceGroup("resourceGroup");

        // Create an Azure resource (Storage Account)
        var storageAccount = new StorageAccount("sa", new StorageAccountArgs
        {
            ResourceGroupName = resourceGroup.Name,
            Sku = new SkuArgs
            {
                Name = SkuName.Standard_LRS
            },
            Kind = Kind.StorageV2
        });

        // Export the primary key of the Storage Account
        this.PrimaryStorageKey = Output.Tuple(resourceGroup.Name, storageAccount.Name).Apply(names =>
            Output.CreateSecret(GetStorageAccountPrimaryKey(names.Item1, names.Item2)));
    }

    [Output]
    public Output<string> PrimaryStorageKey { get; set; }

    private static async Task<string> GetStorageAccountPrimaryKey(string resourceGroupName, string accountName)
    {
        var accountKeys = await ListStorageAccountKeys.InvokeAsync(new ListStorageAccountKeysArgs
        {
            ResourceGroupName = resourceGroupName,
            AccountName = accountName
        });
        return accountKeys.Keys[0].Value;
    }
}