public async Task <bool> CheckIfUsernameExists(string username)
{
bool userExists = false;
try
{
using (SqlConnection con = new SqlConnection(this.ConnectionString))
{
SqlCommand cmd = new SqlCommand(UserQueries.CountUserByUserName(), con);
cmd.Parameters.Add("@UserName", SqlDbType.VarChar, 50).Value = username;
await con.OpenAsync();
SqlDataReader reader = await cmd.ExecuteReaderAsync();
while (await reader.ReadAsync())
{
int numberOfUsers;
GetNumberOfUsers(out numberOfUsers, reader);
if (numberOfUsers > 0)
{
userExists = true;
}
}
}
}
catch (Exception ex)
{
this.logger.LogError(ex.Message);
throw ex;
}
return(userExists);
}