CommitFileBlocksUploadRequest Class

Definition

Namespace:

Microsoft.Crm.Sdk.Messages

Assembly:

Microsoft.Crm.Sdk.Proxy.dll

Package:

Microsoft.PowerPlatform.Dataverse.Client v1.1.17

Contains the data needed to commit the uploaded data blocks to the file store.

public ref class CommitFileBlocksUploadRequest sealed : Microsoft::Xrm::Sdk::OrganizationRequest

[System.Runtime.Serialization.DataContract(Namespace="http://schemas.microsoft.com/crm/2011/Contracts")]
public sealed class CommitFileBlocksUploadRequest : Microsoft.Xrm.Sdk.OrganizationRequest

[<System.Runtime.Serialization.DataContract(Namespace="http://schemas.microsoft.com/crm/2011/Contracts")>]
type CommitFileBlocksUploadRequest = class
    inherit OrganizationRequest

Public NotInheritable Class CommitFileBlocksUploadRequest
Inherits OrganizationRequest

Inheritance

Object

OrganizationRequest

CommitFileBlocksUploadRequest

Attributes

DataContractAttribute

Examples

The following example shows how to use this message. For this sample to work correctly, you must be connected to the server to get an IOrganizationService interface instance.

The following static UploadFile method shows how to upload a file or image using the InitializeFileBlocksUploadRequest, UploadBlockRequest, and CommitFileBlocksUploadRequest classes to return a the ID of the uploaded file or image.

/// <summary>
/// Uploads a file or image column value
/// </summary>
/// <param name="service">The service</param>
/// <param name="entityReference">A reference to the record with the file or image column</param>
/// <param name="fileAttributeName">The name of the file or image column</param>
/// <param name="fileInfo">Information about the file or image to upload.</param>
/// <param name="fileMimeType">The mime type of the file or image, if known.</param>
/// <returns></returns>
static Guid UploadFile(
         IOrganizationService service,
         EntityReference entityReference,
         string fileAttributeName,
         FileInfo fileInfo,
         string fileMimeType = null)
{

   // Initialize the upload
   InitializeFileBlocksUploadRequest initializeFileBlocksUploadRequest = new()
   {
         Target = entityReference,
         FileAttributeName = fileAttributeName,
         FileName = fileInfo.Name
   };

   var initializeFileBlocksUploadResponse =
         (InitializeFileBlocksUploadResponse)service.Execute(initializeFileBlocksUploadRequest);

   string fileContinuationToken = initializeFileBlocksUploadResponse.FileContinuationToken;

   // Capture blockids while uploading
   List<string> blockIds = new();

   using Stream uploadFileStream = fileInfo.OpenRead();

   int blockSize = 4 * 1024 * 1024; // 4 MB

   byte[] buffer = new byte[blockSize];
   int bytesRead = 0;

   long fileSize = fileInfo.Length;
   // The number of iterations that will be required:
   // int blocksCount = (int)Math.Ceiling(fileSize / (float)blockSize);
   int blockNumber = 0;

   // While there is unread data from the file
   while ((bytesRead = uploadFileStream.Read(buffer, 0, buffer.Length)) > 0)
   {
         // The file or final block may be smaller than 4MB
         if (bytesRead < buffer.Length)
         {
            Array.Resize(ref buffer, bytesRead);
         }

         blockNumber++;

         string blockId = Convert.ToBase64String(Encoding.UTF8.GetBytes(Guid.NewGuid().ToString()));

         blockIds.Add(blockId);

         // Prepare the request
         UploadBlockRequest uploadBlockRequest = new()
         {
            BlockData = buffer,
            BlockId = blockId,
            FileContinuationToken = fileContinuationToken,
         };

         // Send the request
         service.Execute(uploadBlockRequest);
   }

   // Try to get the mimetype if not provided.
   if (string.IsNullOrEmpty(fileMimeType))
   {
         var provider = new FileExtensionContentTypeProvider();

         if (!provider.TryGetContentType(fileInfo.Name, out fileMimeType))
         {
            fileMimeType = "application/octet-stream";
         }
   }

   // Commit the upload
   CommitFileBlocksUploadRequest commitFileBlocksUploadRequest = new()
   {
         BlockList = blockIds.ToArray(),
         FileContinuationToken = fileContinuationToken,
         FileName = fileInfo.Name,
         MimeType = fileMimeType
   };

   var commitFileBlocksUploadResponse =
         (CommitFileBlocksUploadResponse)service.Execute(commitFileBlocksUploadRequest);

   return commitFileBlocksUploadResponse.FileId;

}

This example method includes some logic to try to get the MIME type of the file using the FileExtensionContentTypeProvider.TryGetContentType(String, String) method if it isn't provided. If the type isn't found, it's set to application/octet-stream.

For the complete sample see Sample: File Operations using Dataverse SDK for .NET

Remarks

This request results in the uploaded data blocks being combined into a single binary file.

Learn to use file column data

Constructors

CommitFileBlocksUploadRequest()

Initializes a new instance of the CommitFileBlocksUploadRequest class.

Properties

BlockList	Gets or sets the IDs of the uploaded data blocks, in the correct sequence, that will result in the final data file when the data blocks are combined.
ExtensionData	Gets or sets the structure that contains extra data. Optional. (Inherited from OrganizationRequest)
FileContinuationToken	Gets or sets a token that uniquely identifies a sequence of related data uploads.
FileName	Gets or sets a filename to associate with the binary data file.
Item[String]	Gets or sets the indexer for the Parameters collection. (Inherited from OrganizationRequest)
MimeType	Gets or sets the MIME type of the uploaded file.
Parameters	Gets or sets the collection of parameters for the request. Required, but is supplied by derived classes. (Inherited from OrganizationRequest)
RequestId	Gets or sets the ID of the request. Optional. (Inherited from OrganizationRequest)
RequestName	Gets or sets the name of the request. Required, but is supplied by derived classes. (Inherited from OrganizationRequest)