/// <summary>
/// 删除文件类型属性的文件
/// </summary>
/// <param name="entity"></param>
/// <param name="fileAttributeName"></param>
public async Task DeleteAttributeFileData(CrmEntityReference entityID, string fileAttributeName, Guid?proxyUserId = null)
{
CrmFileAttributeDeleteDataRequestMessage request = new CrmFileAttributeDeleteDataRequestMessage()
{
EntityName = entityID.EntityName,
EntityId = entityID.Id,
AttributeName = fileAttributeName,
};
await this.Execute(request);
}
/// <summary>
/// 为文件类型属性上传文件
/// </summary>
/// <param name="entity"></param>
/// <param name="fileAttributeName"></param>
/// <param name="fileName"></param>
/// <param name="fileStream"></param>
public async Task UploadAttributeFile(CrmEntityReference entityID, string fileAttributeName, string fileName, string fileMimeType, Stream fileStream, Guid?proxyUserId = null)
{
CrmGetFileAttributeUploadInfoRequestMessage getRequest = new CrmGetFileAttributeUploadInfoRequestMessage()
{
EntityName = entityID.EntityName,
EntityId = entityID.Id,
AttributeName = fileAttributeName,
FileName = fileName
};
var getResponse = (CrmGetFileAttributeUploadInfoResponseMessage)await this.Execute(getRequest);
int perSize = getResponse.PerSize;
int currentSize = perSize;
using (var buffOwner = MemoryPool <byte> .Shared.Rent(perSize))
{
var buff = buffOwner.Memory;
List <string> blockIDs = new List <string>();
int position = 0;
while (currentSize == perSize)
{
currentSize = await fileStream.ReadAsync(buff);
if (currentSize != 0)
{
var blockID = Guid.NewGuid().ToString();
blockIDs.Add(blockID);
CrmFileAttributeUploadChunkingRequestMessage uploadRequest = new CrmFileAttributeUploadChunkingRequestMessage()
{
UploadUrl = getResponse.UploadUrl,
Data = buff.Slice(0, currentSize).ToArray(),
FileName = fileName,
Start = position,
End = currentSize - 1,
Total = fileStream.Length
};
position += currentSize;
await this.Execute(uploadRequest);
}
}
}
}
/// <summary>
/// 下载文件类型属性的文件
/// </summary>
/// <param name="entity"></param>
/// <param name="fileAttributeName"></param>
/// <param name="action"></param>
public async Task DownloadAttributeFile(CrmEntityReference entityID, string fileAttributeName, Func <string, Stream, Task> action, Guid?proxyUserId = null)
{
CrmFileAttributeDownloadChunkingRequestMessage request = new CrmFileAttributeDownloadChunkingRequestMessage()
{
EntityName = entityID.EntityName,
EntityId = entityID.Id,
AttributeName = fileAttributeName,
Start = 0,
End = 1
};
var response = (CrmFileAttributeDownloadChunkingResponseMessage)await this.Execute(request);
await using (var stream = new CrmFileBlocksStream(entityID.EntityName, entityID.Id, response.FileName, response.Total, this, proxyUserId))
{
await action(response.FileName, stream);
}
}