Asp.net (C #) Cross-origin and cross-origin Cookie writing

Solution:
Copy codeThe Code is as follows:
// The called page in www. B .com needs to write the P3P header to remove IE from blocking Cookie writing.
Context. Response. AddHeader ("P3P", "CP = cao psa our ");

// When calling the content in www. B .com through ajax in www.A.com, it is a cross-origin access and jsonp needs to be used. To work with jsonp, add the following two sentences to generate a jsonp response.
Context. Response. ContentType = "text/plain ";
Context. Response. Write (string. Format ("{0} ('OK')", context. Request ["callback"]);


Copy codeThe Code is as follows:
// Call jsonp for cross-origin access
JQuery. ajax ({
Url: url,
Type: 'get ',
Data: data,
DataType: 'jsonp ',
Success: function (data ){
Window. location. href = toURL;
}
});