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(C#) URL Encoding Charset in POST Query Params

Demonstrates how to control the URL encoding charset in POST query params.

Chilkat .NET Downloads

Chilkat .NET Framework

Chilkat for .NET Core

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

// We have the string "MÆRSK".
string nameWin1252Encoded = "M%E6RSK";

// Note: The DecodeAndAppend method is newly added in Chilkat v9.5.0.87
Chilkat.StringBuilder sb = new Chilkat.StringBuilder();
bool success = sb.DecodeAndAppend(nameWin1252Encoded,"url","windows-1252");

Chilkat.Http http = new Chilkat.Http();

// We're setting the session log filename so we can see the exact request sent.
http.SessionLogFilename = "qa_output/sessionLog.txt";

// First demonstrate a simple application/x-www-form-urlencoded POST

Chilkat.HttpRequest req = new Chilkat.HttpRequest();

// Set the Charset = "utf-8" to cause URL encoding to use utf-8.
req.Charset = "utf-8";

req.AddParam("name",sb.GetAsString());

Chilkat.HttpResponse resp = http.PostUrlEncoded("https://www.chilkatsoft.com/something",req);
if (http.LastMethodSuccess == false) {
    Debug.WriteLine(http.LastErrorText);
    return;
}

// This is the request that is sent:
// Notice that utf-8 is used in the query param (the letter 'Æ' is %C3%A6)

// 	POST /something HTTP/1.1
// 	Host: www.chilkatsoft.com
// 	Content-Type: application/x-www-form-urlencoded
// 	Content-Length: 15
// 
// 	name=M%C3%A6RSK

// ---------------------------------------------------------------
// Switch to windows-1252

req.Charset = "windows-1252";

resp = http.PostUrlEncoded("https://www.chilkatsoft.com/something",req);
if (http.LastMethodSuccess == false) {
    Debug.WriteLine(http.LastErrorText);
    return;
}

// This is the request that is sent:
// Notice that windows-1252 is used in the query param (the letter 'Æ' is %E6)

// 	POST /something HTTP/1.1
// 	Host: www.chilkatsoft.com
// 	Content-Type: application/x-www-form-urlencoded
// 	Content-Length: 12
// 
// 	name=M%E6RSK

// ---------------------------------------------------------------
// Let's do the same with SynchronousRequest, switching back to utf-8

req.Path = "/something";
req.HttpVerb = "POST";
req.ContentType = "application/x-www-form-urlencoded";

req.Charset = "utf-8";

resp = http.SynchronousRequest("www.chilkatsoft.com",443,true,req);
if (http.LastMethodSuccess == false) {
    Debug.WriteLine(http.LastErrorText);
    return;
}

// This is the request that is sent:
// Notice that utf-8 is used in the query param (the letter 'Æ' is %C3%A6)

// 	POST /something HTTP/1.1
// 	Host: www.chilkatsoft.com
// 	Content-Type: application/x-www-form-urlencoded
// 	Content-Length: 15
// 
// 	name=M%C3%A6RSK

// ---------------------------------------------------------------
// Let's do a PostXml where the query params are in the HTTP request start line, 
// and the Content-Type is text/xml where the body of the request is XML.

req.Path = "/something";
req.HttpVerb = "POST";
req.ContentType = "text/xml";
success = req.LoadBodyFromString("<test>123</test>","utf-8");
req.Charset = "utf-8";

// Remember... our request object still contains the query param added in the above call to AddParam.

resp = http.SynchronousRequest("www.chilkatsoft.com",443,true,req);
if (http.LastMethodSuccess == false) {
    Debug.WriteLine(http.LastErrorText);
    return;
}

// This is the request that is sent:
// Notice that utf-8 is used in the query param (the letter 'Æ' is %C3%A6)

// 	POST /something?name=M%C3%A6RSK HTTP/1.1
// 	Host: www.chilkatsoft.com
// 	Content-Type: text/xml
// 	Content-Length: 16
// 
// 	<test>123</test>


 

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