重载解析失败，因为没有缩小转换就无法调用可访问的“新"

Overload resolution failed because no accessible 'new' can be called without a narrowing conversion.

Private Sub bt_hapus_Click(sender As Object, e As EventArgs) Handles bt_hapus.Click
        Try
            Dim sqlda As New SqlClient.SqlDataAdapter("Delete from tblpasien where No_Rkm_Mds=" & Me.No_Rkm_MdsTextBox.Text, Me.KlinikGigiDataSet)
            sqlda.Fill(dbpasien, "tblpasien")
            MsgBox("Data telah berhasil dihapus")
            bersih()
            pasif()
            normal()
        Catch ex As Exception
            MsgBox(ex.Message)
        End Try
    End Sub

所有源代码:

Public Class frm_pasien
    Dim dbpasien As New DataSet
    Dim dvpasien As New DataView
    Dim tekan As Integer
    Dim cari As Integer

    Private Sub TblpasienBindingNavigatorSaveItem_Click(sender As Object, e As EventArgs) Handles TblpasienBindingNavigatorSaveItem.Click
        Me.Validate()
        Me.TblpasienBindingSource.EndEdit()
        Me.TableAdapterManager.UpdateAll(Me.KlinikGigiDataSet)

    End Sub

    Private Sub Form1_Load(sender As Object, e As EventArgs) Handles MyBase.Load
        'TODO: This line of code loads data into the 'KlinikGigiDataSet.tblpembayaran' table. You can move, or remove it, as needed.
        Me.TblpembayaranTableAdapter.Fill(Me.KlinikGigiDataSet.tblpembayaran)
        'TODO: This line of code loads data into the 'KlinikGigiDataSet.tblpasien' table. You can move, or remove it, as needed.
        Me.TblpasienTableAdapter.Fill(Me.KlinikGigiDataSet.tblpasien)

    End Sub

    Private Sub BindingNavigatorDeleteItem_Click(sender As Object, e As EventArgs) Handles BindingNavigatorDeleteItem.Click

    End Sub

    Private Sub BindingNavigatorAddNewItem_Click(sender As Object, e As EventArgs) Handles BindingNavigatorAddNewItem.Click

    End Sub

    Private Sub bt_keluar_Click(sender As Object, e As EventArgs) Handles bt_keluar.Click
        Dim pesan As DialogResult = MsgBox("Apakah anda yakin akan keluar", MsgBoxStyle.OkCancel)
        If pesan = DialogResult.OK Then
            Me.Close()
        Else
            Exit Sub
        End If
    End Sub


    Private Sub bt_hapus_Click(sender As Object, e As EventArgs) Handles bt_hapus.Click
        Try
            Dim sqlda As New SqlClient.SqlDataAdapter("Delete from tblpasien where No_Rkm_Mds=" & Me.No_Rkm_MdsTextBox.Text, Me.KlinikGigiDataSet)
            sqlda.Fill(dbpasien, "tblpasien")
            MsgBox("Data telah berhasil dihapus")
            bersih()
            pasif()
            normal()
        Catch ex As Exception
            MsgBox(ex.Message)
        End Try
    End Sub

    Private Sub bersih()
        Me.No_Rkm_MdsTextBox.Clear()
        Me.NamaTextBox.Clear()
        Me.UmurTextBox.Clear()
        Me.Tgl_LhrTextBox.Clear()
        Me.AlamatTextBox.Clear()
        Me.No_HpTextBox.Clear()
        Me.No_Rkm_MdsTextBox.Focus()
    End Sub

    Private Sub pasif()
        Me.No_Rkm_MdsTextBox.Enabled = False
        Me.NamaTextBox.Enabled = False
        Me.UmurTextBox.Enabled = False
        Me.Tgl_LhrTextBox.Enabled = False
        Me.AlamatTextBox.Enabled = False
        Me.No_HpTextBox.Enabled = False
    End Sub

    Private Sub normal()
        Me.bt_tambah.Enabled = True
        Me.bt_edit.Enabled = True
        Me.bt_simpan.Enabled = False
        Me.bt_reset.Enabled = False
        Me.bt_hapus.Enabled = False
        Me.bt_keluar.Enabled = True
    End Sub
    Private Sub binding()
        Me.No_Rkm_MdsTextBox.DataBindings.Clear()
        Me.No_Rkm_MdsTextBox.DataBindings.Add("Text", dvpasien, "Id")
        Me.NamaTextBox.DataBindings.Clear()
        Me.NamaTextBox.DataBindings.Add("Text", dvpasien, "Nama")
        Me.UmurTextBox.DataBindings.Clear()
        Me.UmurTextBox.DataBindings.Add("Text", dvpasien, "Alamat")
        Me.Tgl_LhrTextBox.DataBindings.Clear()
        Me.Tgl_LhrTextBox.DataBindings.Add("Text", dvpasien, "Ttl")
        Me.AlamatTextBox.DataBindings.Clear()
        Me.AlamatTextBox.DataBindings.Add("value", dvpasien, "Jkl")
        Me.No_HpTextBox.DataBindings.Clear()
        Me.No_HpTextBox.DataBindings.Add("Text", dvpasien, "Pekerjaan")
    End Sub

    Private Sub No_Rkm_MdsTextBox_TextChanged(sender As Object, e As EventArgs) Handles No_Rkm_MdsTextBox.TextChanged
        If Len(Me.No_Rkm_MdsTextBox.Text) < 10 Then
            Exit Sub
        End If
        dvpasien.Sort = "Id"
        Try
            cari = dvpasien.Find(Me.No_Rkm_MdsTextBox.Text)
            If cari = -1 Then
                If tekan = 1 Then
                    Me.No_Rkm_MdsTextBox.Focus()
                Else
                    MsgBox("Data tidak ada")
                    bersih()
                End If

            Else
                If tekan = 1 Then
                    MsgBox("Data sudah ada")
                    bersih()
                Else
                    binding()
                    tampilgrid()
                    Me.bt_edit.PerformClick()
                End If

            End If
        Catch ex As Exception
            MsgBox(ex.Message)
        End Try
    End Sub

    Private Sub tampilgrid()
        Throw New NotImplementedException
    End Sub    
End Class

请帮助这是我讲师的论文.

Dim dbpasien As New DataSet()

Using dbpasien As DataSet = New DataSet()