[英]how can i execute this code faster?
在我的“帳單”表單中,我有一個按鈕可以將datagridview數據插入兩個訪問數據庫中。 我使用此代碼插入到第一個數據庫:
Private Sub inserttotblbill()
Dim billcon As OleDbConnection = New OleDbConnection(constr)
Dim billcmd As New OleDbCommand
For i = 0 To dgv.Rows.Count - 1
billcon.Open()
billcmd.Connection = billcon
billcmd.CommandText = ("insert into tblbill(inum,snum,idate,cname,iname,iprc,iqnt,ipaid,itotal,iuser,itype) " _
& " values('" _
& TextBox1.Text _
& "','" _
& TextBox6.Text _
& "','" _
& TextBox2.Text _
& "','" _
& TextBox3.Text _
& "','" _
& dgv.Rows(i).Cells(0).Value _
& "','" _
& dgv.Rows(i).Cells(1).Value _
& "','" _
& dgv.Rows(i).Cells(2).Value _
& "','" _
& TextBox4.Text _
& "','" _
& dgv.Rows(i).Cells(3).Value _
& "','" _
& username _
& "','" _
& Label2.Text _
& "')")
If Not ListBox1.Items.Contains(dgv.Rows(i).Cells(4).Value) Then
ListBox1.Items.Add(dgv.Rows(i).Cells(4).Value)
End If
billcmd.ExecuteNonQuery()
billcon.Close()
Next i
end sub
我使用此代碼插入到第二個數據庫:
Private Sub inserttoreport()
Dim rptcon As OleDbConnection = New OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0; Data Source=" & Application.StartupPath & "\report.mdb; Jet OLEDB:Database Password=KNOZ1003")
Dim rptcmd As New OleDbCommand
For k = 0 To dgv.Rows.Count - 1
rptcon.Open()
rptcmd.Connection = rptcon
If dgv.Rows(k).Cells(4).Value = "101" Then
rptcmd.CommandText = ("insert into tab1(f1,f2,f3,f4,f5,f6,f7,f8,f9,f10,f11,f12,f13) " _
& " values('" _
& TextBox1.Text _
& "','" _
& TextBox6.Text _
& "','" _
& TextBox2.Text _
& "','" _
& TextBox3.Text _
& "','" _
& dgv.Rows(k).Cells(0).Value _
& "','" _
& dgv.Rows(k).Cells(1).Value _
& "','" _
& dgv.Rows(k).Cells(2).Value _
& "','" _
& TextBox4.Text _
& "','" _
& dgv.Rows(k).Cells(3).Value _
& "','" _
& TextBox5.Text _
& "','" _
& Label2.Text _
& "','" _
& username _
& "','" _
& xxxx _
& "')")
ElseIf dgv.Rows(k).Cells(4).Value = "102" Then
rptcmd.CommandText = ("insert into tab2(f1,f2,f3,f4,f5,f6,f7,f8,f9,f10,f11,f12,f13) " _
& " values('" _
& TextBox1.Text _
& "','" _
& TextBox6.Text _
& "','" _
& TextBox2.Text _
& "','" _
& TextBox3.Text _
& "','" _
& dgv.Rows(k).Cells(0).Value _
& "','" _
& dgv.Rows(k).Cells(1).Value _
& "','" _
& dgv.Rows(k).Cells(2).Value _
& "','" _
& TextBox4.Text _
& "','" _
& dgv.Rows(k).Cells(3).Value _
& "','" _
& TextBox5.Text _
& "','" _
& Label2.Text _
& "','" _
& username _
& "','" _
& xxxx _
& "')")
End If
rptcmd.ExecuteNonQuery()
rptcon.Close()
Next k
End Sub
但是,當我按下按鈕執行上述代碼時,我需要花些時間才能使其更快?
首先,請將連接移出循環:
billcon.Open()
billcmd.Connection = billcon
For i = 0 To dgv.Rows.Count - 1
' ...
Next
billcon.Close()
您可以使用多線程來加速代碼。 任務類別
這也是vb的版本。 嘗試將背景螺紋用於身高體重手柄。
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