Is 'var' a reserved word in VB.NET? - vb.net

Question

While running the following code below, I received the following error:
Type 'var' is not defined.
Is 'var' a reserved word in VB.NET?
If not, why am I getting this error and how do I resolve it?
<WebMethod()> _
Public Shared Function SaveData(empdata As String) As String
Dim serializeData = JsonConvert.DeserializeObject(Of List(Of Employee))(empdata)
Using con = New SqlConnection(Constr)
For Each data As var In serializeData
Using cmd = New SqlCommand("INSERT INTO Employees VALUES(#Fname, #Lname,#Email,#CreatedDate)")
cmd.CommandType = CommandType.Text
cmd.Parameters.AddWithValue("#Fname", data.FName)
cmd.Parameters.AddWithValue("#Lname", data.LName)
cmd.Parameters.AddWithValue("#Email", data.EmailId)
cmd.Parameters.AddWithValue("#CreatedDate", DateTime.Now)
cmd.Connection = con
If con.State = ConnectionState.Closed Then
con.Open()
End If
cmd.ExecuteNonQuery()
con.Close()
End Using
Next
End Using
Return Nothing
End Function
'Updated:
function getAllEmpData() {
var data = [];
$('tr.data-contact-person').each(function () {
var firstName = $(this).find('.spousename01').val();
var lastName = $(this).find('.spouseaddress01').val();
var emailId = $(this).find('.spouseincome01').val();
var alldata = {
'FName': firstName,
'LName': lastName,
'EmailId': emailId
}
data.push(alldata);
});
console.log(data);
return data;
}
$("#btnSubmit").click(function () {
var data = JSON.stringify(getAllEmpData());
//console.log(data);
$.ajax({
url: 'closures.aspx/SaveData',
type: 'POST',
dataType: 'json',
contentType: 'application/json; charset=utf-8',
data: JSON.stringify({ 'empdata': data }),
success: function () {
alert("Data Added Successfully");
},
error: function () {
alert("Error while inserting data");
}
});
});