VB If statement based on serial input - vb.net

Question

I am trying to execute an If Statement in Visual Basic based on serial input from my arduino. The arduino is sending the data just fine, and the VB serial monitor tool shows the output fine. The condition will not execute. I tried multiple solutions on SoF and SE. Here is my code:
My VB code:
Imports System.IO.Ports
Public Class Form1
Private WithEvents SerialPort As New SerialPort()
Private Sub Form1_Load(sender As Object, e As EventArgs) Handles MyBase.Load
SerialPort.PortName = "COM13" ' change to your serial port name
SerialPort.BaudRate = 9600
SerialPort.Open()
End Sub
Private Sub SerialPort_DataReceived(sender As Object, e As SerialDataReceivedEventArgs) Handles SerialPort.DataReceived
Dim receivedData As String = SerialPort.ReadExisting()
If receivedData = "1" Then
Label1.Text = "High Gas"
' do something
ElseIf receivedData = "0" Then
Label1.Text = "Low Gas"
' do something else
Else
' do a default action
End If
End Sub
End Class
My Arduino code:
int mq=A0;
int x;
void setup()
{
pinMode(A0,INPUT);
Serial.begin(9600);
}
void loop()
{
x=analogRead(A0);
delay(500);
if (x < 93 ){
Serial.println("0");}
if (x > 98 ){
Serial.println("1");}
}
I tried all the solutions I was able to find on SoF and SE. This includes using ReadChar, ReadLine, etc methods. I also tried changing the Arduino serial output from numeric to string and vice versa.