hello,
I'm begginer and i need help!!
I need do validation in mvc core to check if username already exists..
My source code dont work. it returns 0 where it should be 1. That is, 0 would usually exist and 1 user already exists.
I put it in controller:
public JsonResult CheckUsernameAvailability(string userdata)
{
System.Threading.Thread.Sleep(200);
var SeachData = db.StudentDetails.Where(x => x.StuName == userdata).SingleOrDefault();
if (SeachData != null)
{
return Json(1);
}
else{
return Json(0);
}
}
View:
<label class="control-label col-sm-2" for="User">Username:</label>
<div class="col-sm-10">
<input class="form-control" type="text" id="Username" name="Username" placeholder="Enter Username" onchange="UserCheck()">
</div>
</div>
<div class="row">
<label class="col-sm-2"></label>
<div class="col-sm-10">
<p id="Status" />
</div>
</div>
<div class="row">
<label class="control-label col-sm-2" for="Pwd">Password:</label>
<div class="col-sm-10">
<input class="form-control" type="Password" id="Password" name="Password" placeholder="Enter Password" onchange="UserCheck()">
</div>
</div>
</div>
</div>
<script>
function UserCheck() {
$("#Status").html("Checking...");
$.post("@Url.Action("CheckUsernameAvailability", "Home")",
{
userdata: $("#Username").val()
},
function (data) {
if (data == 1) {
$("#Status").html('<font color="Green">Available !. you can take it.</font>');
$("#Username").css("border-color", "Green");
}
else {
$("#Status").html('<font color="Red">That name is taken.Try Another.</font>');
$("#Username").css("border-color", "Red");
}
});
}
</script>
thanks.
