Redirect to URL with POST method in Asp.Net Core3.1

Question

I am usig Asp.net core 3.1 and I must to redirect user to a url with Post Action, what should I do? is it possible?

public async Task<IActionResult> RedirectTo() { // do something to generate a url // redirectUrl = "https://xx.com/?token=zzzzz" redirect and Post to redirectUrl //how ??????????????????? }

You can't redirect to a POST method. What exactly are you thinking to POST here anyway? — DavidG
– DavidG, Commented Feb 22, 2021 at 12:15
I want to direct the user to the bank portal. According to the bank document, I have to post 'redirectUrl' to the bank portal. I actually want to navigate user to this path by post action. is it possible???!?! — Amir133
– Amir133, Commented Feb 22, 2021 at 12:26

Athanasios Kataras · Accepted Answer · 2021-02-22 12:20:33Z

Check here for more information as to why this is not supported

You can't really do it BUT, there is a clever workaround here

 HttpResponse response = HttpContext.Current.Response; response.Clear(); StringBuilder s = new StringBuilder(); s.Append("<html>"); s.AppendFormat("<body onload='document.forms[\"form\"].submit()'>"); s.AppendFormat("<form name='form' action='{0}' method='post'>", url); foreach (string key in data) { s.AppendFormat("<input type='hidden' name='{0}' value='{1}' />", key, data[key]); } s.Append("</form></body></html>"); response.Write(s.ToString()); response.End();

What this does, is create on html response with a form that will post a request to the required page with javascript.

You need to be in the same domain for this to work. If you redirect, then you can only do so with GET - parameters.

Thanks, But can you write your code clear or describe more? because I dont know where and how use your trick. thanks

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