รบกวนถามเรื่อง ASP.NET + MySQL ไม่แสดงภาษาไทย (คำถามยอดฮิต -___-")

<add name="ConnectionString" connectionString="Server=localhost;port=3306;Database=mercdb;uid=root;pwd=pass;charset=utf8;" />

<globalization requestEncoding="utf-8" responseEncoding="utf-8" fileEncoding="utf-8" culture="th-TH" uiCulture="th-TH"/>

Dim connStr As String = ConfigurationManager.ConnectionStrings("ConnectionString").ConnectionString
Dim objConn As New MySql.Data.MySqlClient.MySqlConnection
Dim dtAdapter As MySql.Data.MySqlClient.MySqlDataAdapter
Dim dt As New DataTable

objConn = New MySql.Data.MySqlClient.MySqlConnection(connStr)
objConn.Open()

Dim strSQL As String
strSQL = "select * from customer"

dtAdapter = New MySql.Data.MySqlClient.MySqlDataAdapter(strSQL, objConn)
dtAdapter.Fill(dt)

dtAdapter = Nothing

objConn.Close()
objConn = Nothing

Return dt