.NET Core C#

DNS Query TXT Records

See more DNS Examples

Shows how to perform a DNS query to retrieve TXT records.

Note: This example requires Chilkat v9.5.0.96 or later.

.NET Core C#

bool success = false;

Chilkat.Dns dns = new Chilkat.Dns();

Chilkat.JsonObject json = new Chilkat.JsonObject();
json.EmitCompact = false;

success = dns.Query("TXT","x.com",json);
if (success == false) {
    Debug.WriteLine(dns.LastErrorText);
    return;
}

Debug.WriteLine(json.Emit());

// Sample response.
// Parsing code below..

// {
//   "answer": {
//     "txt": [
//       {
//         "name": "x.com",
//         "ttl": 300,
//         "text": "kkdl3qb3tcrmdhfsm803p67r0my0svs8"
//       },
//       {
//         "name": "x.com",
//         "ttl": 300,
//         "text": "v=spf1 ip4:199.16.156.128/26 ip4:199.59.150.64/26 include:_spf.google.com include:spf-008d0a01.pphosted.com -all"
//       },
//       {
//         "name": "x.com",
//         "ttl": 300,
//         "text": "google-site-verification=8yQmoVhQedzlt36RPeQP41ytrEFk9aHEnde_xm0626g"
//       },
//       {
//         "name": "x.com",
//         "ttl": 300,
//         "text": "google-site-verification=F6u9mGL--d2lbLljvH3b1UUgXtevQPdcamKr9c8914A"
//       }
//     ]
//   }
// }

// Use this online tool to generate parsing code from sample JSON: 
// Generate Parsing Code from JSON

string name;
int ttl;
string text;

int i = 0;
int count_i = json.SizeOfArray("answer.txt");
while (i < count_i) {
    json.I = i;
    name = json.StringOf("answer.txt[i].name");
    ttl = json.IntOf("answer.txt[i].ttl");
    text = json.StringOf("answer.txt[i].text");
    i = i + 1;
}