How to use SweetAlert before return RedirectToAction by Form Post? - asp.net-mvc

Question

Model
public class Company{
[StringLength(30)]
public string Name{ get; set; }
[StringLength(15)]
public string RegisterNo { get; set; }
}
View
<form id="form" method="post" action="/Controller/Save" style="font-size:13px;">
<div class="row pb-3">
<div class="form-row">
<div class="col-md-3">
<div class="position-relative form-group">
<label class="">Company Name</label> #Html.EditorFor(model => model.Name, new { htmlAttributes = new { #class = "form-control", #maxlength = "30" } })
</div>
</div>
</div>
<div class="form-row">
<div class="col-md-6">
<div class="position-relative form-group">
<label class="">Reg No</label> #Html.EditorFor(model => model.RegisterNo, new { htmlAttributes = new { #class = "form-control", #maxlength = "15" } })
</div>
</div>
</div>
</div>
</form>
<button name="submit">Save</button>
Controller
public ActionResult Save(Company CompDet){
string Name = CompDet.Name;
string RegNo = CompDet.RegisterNo;
//then Connect DB and Save DB
//HOW TO use SweetAlert before, return RedirectToAction
}
I'm currently using, return RedirectToAction Only.
How to add SweetAlert before RedirectToAction?
Using Ajax Post or Form Post?
Possible that using Ajax & Form Post Together?
After Saving -> Show Sweetalert success -> return redirectToAction
I'm still at the learning level. Please Help.
Thank You