本文整理匯總了C#中Microsoft.WindowsAzure.Storage.Blob.CloudBlobContainer.ExistsAsync方法的典型用法代碼示例。如果您正苦於以下問題：C# CloudBlobContainer.ExistsAsync方法的具體用法？C# CloudBlobContainer.ExistsAsync怎麽用？C# CloudBlobContainer.ExistsAsync使用的例子？那麽, 這裏精選的方法代碼示例或許可以為您提供幫助。您也可以進一步了解該方法所在類Microsoft.WindowsAzure.Storage.Blob.CloudBlobContainer的用法示例。
在下文中一共展示了CloudBlobContainer.ExistsAsync方法的2個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於係統推薦出更棒的C#代碼示例。
示例1: DoesContainerExistAsync
/// <summary>
/// Return a task that asynchronously check whether the specified container exists.
/// </summary>
/// <param name="container">CloudBlobContainer object</param>
/// <param name="requestOptions">Blob request option</param>
/// <param name="operationContext">Operation context</param>
/// <param name="cmdletCancellationToken">Cancellation token</param>
/// <returns>A task object that asynchronously check whether the specified container exists </returns>
public Task<bool> DoesContainerExistAsync(CloudBlobContainer container, BlobRequestOptions requestOptions, OperationContext OperationContext, CancellationToken cancellationToken)
{
return container.ExistsAsync(requestOptions, OperationContext, cancellationToken);
}示例2: ValidatePreconditions
private async Task<HttpResponseMessage> ValidatePreconditions(CloudBlobContainer container)
{
// TODO: Ensure that all preconditions are validated
if (!await container.ExistsAsync())
{
return new HttpResponseMessage(HttpStatusCode.NotFound);
}
IEnumerable<string> leaseID;
if (Request.Headers.TryGetValues("x-ms-lease-id", out leaseID))
{
AccessCondition condition = new AccessCondition()
{
LeaseId = leaseID.First()
};
//Try fetching the attributes to force validation of the leaseID
await container.FetchAttributesAsync(condition, null, null);
}
// If we don't find any errors, just return null to indicate that everything is A-OK.
return null;
}