(C#) REST Download Binary File to Memory

See more REST Examples

Download a binary file to a Chilkat BinData object.

Chilkat .NET Downloads Chilkat .NET Framework Chilkat for .NET Core

// This requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

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

// We're going to download a sample MS-Word doc file.
// The URLs of our MS-Word sample documents are:

// https://www.chilkatdownload.com/sample_data/sample.doc
// https://www.chilkatdownload.com/sample_data/sample.docx

string pathPartOfUrl = "/sample_data/sample.doc";
string domain = "chilkatdownload.com";

bool bTls = true;
int port = 443;
bool bAutoReconnect = true;
bool success = rest.Connect(domain,port,bTls,bAutoReconnect);
if (success != true) {
    Debug.WriteLine(rest.LastErrorText);
    return;
}

Chilkat.BinData bd = new Chilkat.BinData();
success = rest.FullRequestNoBodyBd("GET",pathPartOfUrl,bd);
if (success != true) {
    Debug.WriteLine(rest.LastErrorText);
    return;
}

// A 200 response is expected for actual success.
// If we don't get a 200 response, then the response body was not actually
// the file data, but it was text containing error information.
if (rest.ResponseStatusCode != 200) {
    Chilkat.StringBuilder sbErrorText = new Chilkat.StringBuilder();
    sbErrorText.AppendBd(bd,"utf-8",0,0);
    Debug.WriteLine(sbErrorText.GetAsString());
    Debug.WriteLine("-- Failed.");
    return;
}

// Save to a local file.
// Change the file path based on your operating system or needs...
success = bd.WriteFile("c:/temp/qa_output/sample.doc");
if (success != true) {
    Debug.WriteLine("Failed to save to local file.");
    return;
}

Debug.WriteLine("REST Download of MS-Word File was successful.");