Button1_CLick error

Each time I execute the code on my local page I receive an error that Button1_Click is undefined. I can not see where I am doing so much with this code that it generates this error. Can someone point me in the right direction or simply tell me what I should add or change.

The button code on my UI page:

post1.aspx

<%@ Page Title="" Language="VB" MasterPageFile="~/Site.Search.master" AutoEventWireup="false" CodeFile="post1.aspx.vb" Inherits="post1" %>

<asp:Content ID="Content1" ContentPlaceHolderID="MainContent" Runat="Server">
<div>
    <asp:TextBox ID="name" runat="server"></asp:TextBox>
</div>
    <div>
        <asp:Button ID="Button1" runat="server" Text="Button" OnClientClick="Button1_Click" />
    </div>
    <div>
    </div>
</asp:Content>

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The insert code (stored procedure) on my code behind page:

post1.aspx.vb

Imports System.Data
Imports System.Data.SqlClient

Partial Class post1
    Inherits System.Web.UI.Page

    Protected Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button1.Click

        Dim strConnString As String = ConfigurationManager.ConnectionStrings("SQL2008R2_504887_golivefitnesConnectionString").ConnectionString
        Dim con As New SqlConnection(strConnString)
        Dim cmd As New SqlCommand()
        cmd.CommandType = CommandType.StoredProcedure
        cmd.CommandText = "namesearchs"
        cmd.Parameters.Add("@nameser", SqlDbType.VarChar).Value = name.Text.Trim()
        'cmd.Parameters.Add("@LastName", SqlDbType.VarChar).Value = txtLastName.Text.Trim()
        'cmd.Parameters.Add("@BirthDate", SqlDbType.DateTime).Value = txtBirthDate.Text.Trim()
        'cmd.Parameters.Add("@City", SqlDbType.VarChar).Value = txtCity.Text.Trim()
        'cmd.Parameters.Add("@Country", SqlDbType.VarChar).Value = txtCountry.Text.Trim()
        cmd.Connection = con
        Try
            con.Open()
            cmd.ExecuteNonQuery()
            'lblMessage.Text = "Record inserted successfully"
        Catch ex As Exception
            Throw ex
        Finally
            con.Close()
            con.Dispose()
        End Try

    End Sub

End Class

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Note: The insert works correctly in the database but I still receive the error that Button1_Click is undefined.