我正在創建一封電子郵件，該電子郵件將發送指向 Azure Blob 容器中的 PDF 的鏈接。我還對鏈接設置了時間限制，因此 30 天后它將不再有效。這是創建天藍色鏈接和電子郵件的代碼：// Establishes a connection with Azure.            string storageConnection = CloudConfigurationManager.GetSetting("AzureBlobConnectionString");            CloudStorageAccount cloudStorageAccount = CloudStorageAccount.Parse(storageConnection);            // Gets access to the quote blob container.            CloudBlobClient cloudBlobClient = cloudStorageAccount.CreateCloudBlobClient();            CloudBlobContainer cloudBlobContainer = cloudBlobClient.GetContainerReference("quotes");            cloudBlobContainer.CreateIfNotExists(BlobContainerPublicAccessType.Blob);            // Inserts the pdf into Azure Blob.            CloudBlockBlob cloudBlockBlob = cloudBlobContainer.GetBlockBlobReference("Quote_" + orderId + "_" + DateTime.Now.ToString("yyyy_MM_dd") + ".pdf"); ;            await cloudBlockBlob.UploadFromStreamAsync(report.ExportToStream(ExportFormatType.PortableDocFormat));            // Creates the 30 day time limit to access the pdf.            DateTime expirationDate = DateTime.UtcNow.Add(new TimeSpan(30, 0, 0, 0));            SharedAccessBlobPolicy sharedAccessBlobPolicy = new SharedAccessBlobPolicy();            sharedAccessBlobPolicy.SharedAccessExpiryTime = expirationDate;            sharedAccessBlobPolicy.Permissions = SharedAccessBlobPermissions.Read;            // Creates the uri with the time limit.            string sharedAccesSignature = cloudBlockBlob.GetSharedAccessSignature(sharedAccessBlobPolicy);            string uri = cloudBlockBlob.Uri.AbsoluteUri + sharedAccesSignature;            StringBuilder messageBody = new StringBuilder();            messageBody.Append("Your Quote is attached.<br /><br />");            if (additionalNotes.Replace(" ", "").Length > 0)            {                messageBody.Append("Addtional Notes:<br />");                messageBody.Append(additionalNotes + "<br /><br />");            }如果用戶在時間限制后單擊鏈接，是否可以將用戶重定向到設計的錯誤頁面？