如何在System.Data.SqlClient上的字符集UTF-8中插入字符

Question

首先，我对我的英语感到抱歉 我有问题插入我的本地数据库字符，字符是泰语 这是我的模块

 Imports System.Data
Imports System.Data.SqlClient
Module Module_all
    Friend strConnString As String = "Data Source=(LocalDB)\v11.0;AttachDbFilename=D:\VB\Bank_Project\DB\DB1.mdf;Integrated Security=True;Connect Timeout=1000;characterEncoding=UTF-8"
    Friend objCmd As New SqlCommand
    Friend objConn As New SqlConnection
    Friend sql As String
End Module

非常感谢您的回答

sql = "SELECT COUNT(*) FROM Employee "
    Dim cmd As New SqlCommand(sql, objConn)
    Dim intNumRows As Integer = cmd.ExecuteScalar()
    Dim Id As Integer = intNumRows + 1
    Dim op As String
    If (ListBox1.SelectedIndex = 0) Then
        op = "ออมทรัพย์"
    ElseIf (ListBox1.SelectedIndex = 1) Then
        op = "ฝากประจำ"
    End If
    cmd = New SqlCommand("Insert into Customer Values('" & Id & "','" & Text_pass.Text.Trim() & "','" & Text_money.Text.Trim() & "','" & Text_name.Text.Trim() & "','" & Text_ad.Text.Trim() & "','" & Text_mail.Text.Trim() & "','" & Text_tel.Text.Trim() & "','" & Text_money.Text.Trim() & "')", objConn)

    cmd.ExecuteNonQuery()