C# UWP/WinRT Box: Upload File

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Uploads a file to a destination (parent) folder. The BOX_FOLDER_ID should be replaced with the id of the folder, or 0 for the root folder.

Documentation: https://developer.box.com/reference#upload-a-file

CURL Command

curl https://upload.box.com/api/2.0/files/content \
  -H "Authorization: Bearer BOX_ACCESS_TOKEN" -X POST \
  -F attributes='{"name":"tigers.jpeg", "parent":{"id":"BOX_FOLDER_ID"}}' \
  -F file=@tigers.jpeg

C# UWP/WinRT Example

Chilkat.Rest rest = new Chilkat.Rest();
bool success;

//  URL: https://upload.box.com/api/2.0/files/content
bool bTls = true;
int port = 443;
bool bAutoReconnect = true;
success = await rest.ConnectAsync("upload.box.com",port,bTls,bAutoReconnect);
if (success != true) {
    Debug.WriteLine("ConnectFailReason: " + Convert.ToString(rest.ConnectFailReason));
    Debug.WriteLine(rest.LastErrorText);
    return;
}

rest.PartSelector = "1";
rest.AddHeader("Content-Disposition","form-data; name=\"attributes\"");
rest.SetMultipartBodyString("{\"name\":\"tigers.jpeg\", \"parent\":{\"id\":\"BOX_FOLDER_ID\"}}");

rest.PartSelector = "2";
Chilkat.Stream fileStream2 = new Chilkat.Stream();
fileStream2.SourceFile = "tigers.jpeg";
rest.AddHeader("Content-Disposition","form-data; name=\"tigers.jpeg\"; filename=\"tigers.jpeg\"");
rest.AddHeader("Content-Type","image/jpeg");
rest.SetMultipartBodyStream(fileStream2);

rest.PartSelector = "0";

rest.AddHeader("Authorization","Bearer BOX_ACCESS_TOKEN");

rest.PartSelector = "0";
rest.AddHeader("Content-Type","multipart/form-data");

string strResponseBody = await rest.FullRequestMultipartAsync("POST","/api/2.0/files/content");
if (rest.LastMethodSuccess != true) {
    Debug.WriteLine(rest.LastErrorText);
    return;
}

Chilkat.JsonObject jsonResponse = new Chilkat.JsonObject();
jsonResponse.Load(strResponseBody);

int total_count;
int i;
int count_i;
string type;
string id;
string sequence_id;
string etag;
string sha1;
string name;
string description;
int size;
int path_collectionTotal_count;
string created_at;
string modified_at;
bool trashed_at;
bool purged_at;
string content_created_at;
string content_modified_at;
string created_byType;
string created_byId;
string created_byName;
string created_byLogin;
string modified_byType;
string modified_byId;
string modified_byName;
string modified_byLogin;
string owned_byType;
string owned_byId;
string owned_byName;
string owned_byLogin;
bool shared_link;
string parentType;
string parentId;
string parentSequence_id;
string parentEtag;
string parentName;
string item_status;
int j;
int count_j;
bool sequence_id_bool;
bool etag_bool;

total_count = jsonResponse.IntOf("total_count");
i = 0;
count_i = jsonResponse.SizeOfArray("entries");
while (i < count_i) {
    jsonResponse.I = i;
    type = jsonResponse.StringOf("entries[i].type");
    id = jsonResponse.StringOf("entries[i].id");
    sequence_id = jsonResponse.StringOf("entries[i].sequence_id");
    etag = jsonResponse.StringOf("entries[i].etag");
    sha1 = jsonResponse.StringOf("entries[i].sha1");
    name = jsonResponse.StringOf("entries[i].name");
    description = jsonResponse.StringOf("entries[i].description");
    size = jsonResponse.IntOf("entries[i].size");
    path_collectionTotal_count = jsonResponse.IntOf("entries[i].path_collection.total_count");
    created_at = jsonResponse.StringOf("entries[i].created_at");
    modified_at = jsonResponse.StringOf("entries[i].modified_at");
    trashed_at = jsonResponse.IsNullOf("entries[i].trashed_at");
    purged_at = jsonResponse.IsNullOf("entries[i].purged_at");
    content_created_at = jsonResponse.StringOf("entries[i].content_created_at");
    content_modified_at = jsonResponse.StringOf("entries[i].content_modified_at");
    created_byType = jsonResponse.StringOf("entries[i].created_by.type");
    created_byId = jsonResponse.StringOf("entries[i].created_by.id");
    created_byName = jsonResponse.StringOf("entries[i].created_by.name");
    created_byLogin = jsonResponse.StringOf("entries[i].created_by.login");
    modified_byType = jsonResponse.StringOf("entries[i].modified_by.type");
    modified_byId = jsonResponse.StringOf("entries[i].modified_by.id");
    modified_byName = jsonResponse.StringOf("entries[i].modified_by.name");
    modified_byLogin = jsonResponse.StringOf("entries[i].modified_by.login");
    owned_byType = jsonResponse.StringOf("entries[i].owned_by.type");
    owned_byId = jsonResponse.StringOf("entries[i].owned_by.id");
    owned_byName = jsonResponse.StringOf("entries[i].owned_by.name");
    owned_byLogin = jsonResponse.StringOf("entries[i].owned_by.login");
    shared_link = jsonResponse.IsNullOf("entries[i].shared_link");
    parentType = jsonResponse.StringOf("entries[i].parent.type");
    parentId = jsonResponse.StringOf("entries[i].parent.id");
    parentSequence_id = jsonResponse.StringOf("entries[i].parent.sequence_id");
    parentEtag = jsonResponse.StringOf("entries[i].parent.etag");
    parentName = jsonResponse.StringOf("entries[i].parent.name");
    item_status = jsonResponse.StringOf("entries[i].item_status");
    j = 0;
    count_j = jsonResponse.SizeOfArray("entries[i].path_collection.entries");
    while (j < count_j) {
        jsonResponse.J = j;
        type = jsonResponse.StringOf("entries[i].path_collection.entries[j].type");
        id = jsonResponse.StringOf("entries[i].path_collection.entries[j].id");
        sequence_id_bool = jsonResponse.IsNullOf("entries[i].path_collection.entries[j].sequence_id");
        etag_bool = jsonResponse.IsNullOf("entries[i].path_collection.entries[j].etag");
        name = jsonResponse.StringOf("entries[i].path_collection.entries[j].name");
        j = j + 1;
    }

    i = i + 1;
}

Sample JSON Response Body

{
  "total_count": 1,
  "entries": [
    {
      "type": "file",
      "id": "5000948880",
      "sequence_id": "3",
      "etag": "3",
      "sha1": "134b65991ed521fcfe4724b7d814ab8ded5185dc",
      "name": "tigers.jpeg",
      "description": "a picture of tigers",
      "size": 629644,
      "path_collection": {
        "total_count": 2,
        "entries": [
          {
            "type": "folder",
            "id": "0",
            "sequence_id": null,
            "etag": null,
            "name": "All Files"
          },
          {
            "type": "folder",
            "id": "11446498",
            "sequence_id": "1",
            "etag": "1",
            "name": "Pictures"
          }
        ]
      },
      "created_at": "2012-12-12T10:55:30-08:00",
      "modified_at": "2012-12-12T11:04:26-08:00",
      "trashed_at": null,
      "purged_at": null,
      "content_created_at": "2013-02-04T16:57:52-08:00",
      "content_modified_at": "2013-02-04T16:57:52-08:00",
      "created_by": {
        "type": "user",
        "id": "17738362",
        "name": "sean rose",
        "login": "sean@box.com"
      },
      "modified_by": {
        "type": "user",
        "id": "17738362",
        "name": "sean rose",
        "login": "sean@box.com"
      },
      "owned_by": {
        "type": "user",
        "id": "17738362",
        "name": "sean rose",
        "login": "sean@box.com"
      },
      "shared_link": null,
      "parent": {
        "type": "folder",
        "id": "11446498",
        "sequence_id": "1",
        "etag": "1",
        "name": "Pictures"
      },
      "item_status": "active"
    }
  ]
}