C# GMail: List all GMail Labels

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Lists all labels in the user's mailbox.

Documentation: https://developers.google.com/gmail/api/v1/reference/users/labels/list

CURL Command

curl -X GET https://www.googleapis.com/gmail/v1/users/me/labels \
    --header "Authorization: Bearer GMAIL_TOKEN"

C# Example

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

//  URL: https://www.googleapis.com/gmail/v1/users/me/labels
bool bTls = true;
int port = 443;
bool bAutoReconnect = true;
success = rest.Connect("www.googleapis.com",port,bTls,bAutoReconnect);
if (success != true) {
    Debug.WriteLine("ConnectFailReason: " + Convert.ToString(rest.ConnectFailReason));
    Debug.WriteLine(rest.LastErrorText);
    return;
}

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

Chilkat.StringBuilder sbResponseBody = new Chilkat.StringBuilder();
success = rest.FullRequestNoBodySb("GET","/gmail/v1/users/me/labels",sbResponseBody);
if (success != true) {
    Debug.WriteLine(rest.LastErrorText);
    return;
}

int respStatusCode = rest.ResponseStatusCode;
if (respStatusCode >= 400) {
    Debug.WriteLine("Response Status Code = " + Convert.ToString(respStatusCode));
    Debug.WriteLine("Response Header:");
    Debug.WriteLine(rest.ResponseHeader);
    Debug.WriteLine("Response Body:");
    Debug.WriteLine(sbResponseBody.GetAsString());
    return;
}

Chilkat.JsonObject jsonResponse = new Chilkat.JsonObject();
jsonResponse.LoadSb(sbResponseBody);

//  See the Online Tool for Generating JSON Parse Code
int i;
int count_i;

i = 0;
count_i = jsonResponse.SizeOfArray("labels");
while (i < count_i) {
    jsonResponse.I = i;
    string id = jsonResponse.StringOf("labels[i].id");
    string name = jsonResponse.StringOf("labels[i].name");
    string messageListVisibility = jsonResponse.StringOf("labels[i].messageListVisibility");
    string labelListVisibility = jsonResponse.StringOf("labels[i].labelListVisibility");
    string type = jsonResponse.StringOf("labels[i].type");
    i = i + 1;
}

Sample JSON Response Body

{
  "labels": [
    {
      "id": "Label_5",
      "name": "QA",
      "messageListVisibility": "show",
      "labelListVisibility": "labelShow",
      "type": "user"
    },
    {
      "id": "Label_21",
      "name": "[Gmail]/testFolder",
      "type": "user"
    },
    {
      "id": "CATEGORY_PERSONAL",
      "name": "CATEGORY_PERSONAL",
      "type": "system"
    },
    {
      "id": "Label_8",
      "name": "old",
      "type": "user"
    },
    {
      "id": "CATEGORY_SOCIAL",
      "name": "CATEGORY_SOCIAL",
      "type": "system"
    },
    {
      "id": "Label_7",
      "name": "labél with space",
      "type": "user"
    },
    {
      "id": "Label_41",
      "name": "QA/qa_fetchSingleAsMime",
      "type": "user"
    },
    {
      "id": "Label_4",
      "name": "[Imap]/Trash",
      "messageListVisibility": "hide",
      "labelListVisibility": "labelShow",
      "type": "user"
    },
    {
      "id": "Label_1",
      "name": "\"test\"",
      "messageListVisibility": "hide",
      "labelListVisibility": "labelShow",
      "type": "user"
    },
    {
      "id": "Label_6",
      "name": "QA/Entwürfe",
      "messageListVisibility": "hide",
      "labelListVisibility": "labelShow",
      "type": "user"
    },
    {
      "id": "CATEGORY_FORUMS",
      "name": "CATEGORY_FORUMS",
      "type": "system"
    },
    {
      "id": "Label_42",
      "name": "[Gmail]/フルタイムの共有ソリューションはjapan",
      "type": "user"
    },
    {
      "id": "Label_3",
      "name": "[Gmail]/ö",
      "messageListVisibility": "hide",
      "labelListVisibility": "labelShow",
      "type": "user"
    },
    {
      "id": "IMPORTANT",
      "name": "IMPORTANT",
      "messageListVisibility": "hide",
      "labelListVisibility": "labelShow",
      "type": "system"
    },
    {
      "id": "Label_2",
      "name": "[Gmail]/X&Y",
      "type": "user"
    },
    {
      "id": "CATEGORY_UPDATES",
      "name": "CATEGORY_UPDATES",
      "type": "system"
    },
    {
      "id": "CHAT",
      "name": "CHAT",
      "messageListVisibility": "hide",
      "labelListVisibility": "labelShow",
      "type": "system"
    },
    {
      "id": "SENT",
      "name": "SENT",
      "messageListVisibility": "hide",
      "labelListVisibility": "labelShow",
      "type": "system"
    },
    {
      "id": "INBOX",
      "name": "INBOX",
      "messageListVisibility": "hide",
      "labelListVisibility": "labelShow",
      "type": "system"
    },
    {
      "id": "TRASH",
      "name": "TRASH",
      "messageListVisibility": "hide",
      "labelListVisibility": "labelHide",
      "type": "system"
    },
    {
      "id": "CATEGORY_PROMOTIONS",
      "name": "CATEGORY_PROMOTIONS",
      "type": "system"
    },
    {
      "id": "DRAFT",
      "name": "DRAFT",
      "messageListVisibility": "hide",
      "labelListVisibility": "labelShow",
      "type": "system"
    },
    {
      "id": "SPAM",
      "name": "SPAM",
      "messageListVisibility": "hide",
      "labelListVisibility": "labelHide",
      "type": "system"
    },
    {
      "id": "STARRED",
      "name": "STARRED",
      "messageListVisibility": "hide",
      "labelListVisibility": "labelShow",
      "type": "system"
    },
    {
      "id": "UNREAD",
      "name": "UNREAD",
      "type": "system"
    }
  ]
}