保存每個項目while循環vb.net

Question

我需要使我的storedprocedure更新，因爲messabox讀取datagridview的每個項目。它只保存消息箱讀取的最後一條記錄。需要幫助:(

For Each row As DataGridViewRow In DataGridView1.Rows 
       Dim strunitprice As String = CDbl(row.Cells(7).FormattedValue) + Val(CDbl(TXTNET.Text)) 

       'opening the connection 
       x = MessageBox.Show(CDbl(row.Cells(7).FormattedValue) + Val(CDbl(TXTNET.Text))) 
       If x = DialogResult.OK Then 
        Label27.Text = CDbl(row.Cells(7).FormattedValue) + Val(CDbl(TXTNET.Text)) 
       End If 

Dim dr5 As SqlDataReader 
     Dim myCommand As SqlCommand 
     connectme.Open() 
     myCommand = New SqlCommand("Select * from quotation", connectme) 
     dr5 = myCommand.ExecuteReader() 

     While dr5.Read() 
      connectme1.Close() 

      Dim c As New SqlCommand("updatequotation", connectme1) 
      Dim Adapter As SqlDataAdapter = New SqlDataAdapter(c) 
      c.CommandType = CommandType.StoredProcedure 
      c.Parameters.Add("@Customer_Name", SqlDbType.NVarChar).Value = txtclientname.Text 
      c.Parameters.Add("@Date_Today", SqlDbType.VarChar).Value = Label7.Text 
      c.Parameters.Add("@Net_Income", SqlDbType.VarChar).Value = TXTNET.Text 
      c.Parameters.Add("@Unit_Price", SqlDbType.VarChar).Value = Label27.Text 
      connectme1.Open() 
      c.ExecuteNonQuery() 
      connectme1.Close() 
     End While 
     dr5.Close() 
     connectme.Close() 


      Next row 
     End If 

Answer 1

你爲什麼要關閉連接，然後創建命令出來的。從while循環中取出的Connection.close（），並再次運行代碼。它應該工作。