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这里我使用的是 sql server 2017 数据库，我想用我的数据库中的 2 个文件进行广播 Fild1：成员 ID Fild2：用户名

如果你想在我的广播聊天中嵌入 Usernam，你会怎么做

以下是我目前用于广播的编码循环，但它不起作用

Private Shared Async Sub Broadcash(ByVal sMessage As String)

    For i As Integer = 0 To ListMember.Count - 1
        Try
            Await botclient.SendTextMessageAsync(ListMember(i), sMessage, Types.Enums.ParseMode.Default, False, 0, Nothing)
        Catch ex As Exception
            MsgBox(ex.ToString)
        End Try
    Next
    MsgBox("BC Selesai", MsgBoxStyle.Information)
End Sub


Private Sub GeneratMemberID()
    Me.MemberTableAdapter.Fill(Me.TelegrambotDataSet.Member)
    For i As Integer = 0 To TelegrambotDataSet.Member.Rows.Count - 1
        ListMember.Add(TelegrambotDataSet.Member.Rows(i).Item("MemberID"))
    Next
End Sub

Private Sub GeneratUserName()
    Me.MemberTableAdapter.Fill(Me.TelegrambotDataSet.Member)
    For i As Integer = 0 To TelegrambotDataSet.Member.Rows.Count - 1
        ListMember.Add(TelegrambotDataSet.Member.Rows(i).Item("UserName"))
    Next
End Sub
'=END=

Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
    If btnLogin.Text = "Login" Then
        MsgBox("Loginkan dulu TelegramBOT anda", MsgBoxStyle.Information)
    ElseIf txtPesan.Text = "" Then
        MsgBox("Isi pesan tidak boleh kosong", MsgBoxStyle.Information)
    Else
        Broadcash(txtPesan.Text)
    End If

End Sub

请帮我找到我使用 VB.Net的正确编码

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