Error in c# code .Please check.

public async Task Register([FromBody]SignUp signUp)
{
try
{
SmartWatchUser user = await userManager.FindByEmailAsync(signUp.Email);
if (user != null)
return BadRequest("Username \"" + user.Email + "\" is already taken");
SmartWatchUser smartWatchUser = new SmartWatchUser
{
Email = signUp.Email,
FirstName = signUp.UserName?.Split(" ")?[0],
LastName = signUp.UserName?.Split(" ")?[1],
UserName = signUp.Email,
Status = UserStatus.New,
LockoutEnabled = false
};
var result = await userManager.CreateAsync(smartWatchUser, signUp.Password);
if (result.Succeeded)
{
var roleResult = await userManager.AddToRoleAsync(smartWatchUser, "AppUser");
return Ok("User Registered Successfully!");
}
else
return Ok(string.Join(",", result.Errors.Select(a=>a.Description).ToArray()));
}
catch (Exception ex)
{
//TODO logging
return StatusCode(500, ex.Message);
}
}

This is my signup code in .net core with entityfram work code first approach. I have face this error 'Index was outside the bounds of the array'. Please solve this what's problem this code.

4 Replies

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Salman Beg6y ago
In the line number 11 and 12, you are using Index 0 and 1 but as per the error signUp.UserName is empty or null and due to that reason it is throwing exception. If you put a breakpoint then easily you can understand it. To handle the error you can do like this, if(signUp.UserName!=null) then rest of code. Thanks.
6y ago
Sir i can"t understand please provide .Demo solution.
Rajanikant Hawaldar6y ago
signUp.UserName may be empty or null or it may be contained one word.thats the reason your getting error.
Salman Beg6y ago
Hi. I think the error is coming in the Split method. Put debugger and check whether 0 and 1 index value exists or not. If not exists and you are trying to access then it will throw Index was outside the bounds of the array error. Thanks.