我是新手，所以我要求一些余地和理解。我正在使用VB.NET来筛选网站上的表格并将其放入数据集中。我可以把它DataGridView并使用Insert将数据集保存到MS Access数据库。当我第二天使用该程序并添加新记录时，会出现问题。我无法弄清楚如何仅添加新记录。有人可以帮我弄清楚如何只将新记录添加到MS Access数据库而不是完整的数据集吗？
这是我的Insert代码：
Private Sub Button5_Click(sender As Object, e As EventArgs) Handles Button5.Click
Try
con2.ConnectionString = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=O:\Maintenance\XXXXXX.accdb;"
com2.Connection = con2
com2.CommandText = "INSERT INTO INCOMING2 ([DriverNumber],[Name],[Terminal],[Region],[PostDate],[InspectionDate],[Citation],[InspState],[UnitType],[InspLevel],[Basic],[Section],[Description],[OOS],[Severity],[OOSWeight],[TimeWeight],[Points],[License],[State],[VIN],[Unit],[CostCenter],[UnitDesc],[HomeTerm],[TerminalName],[ShopEmail],[TerminalEmail],[TermMgr],[Count]) VALUES " & _
"(@DriverNumber,@Name,@Terminal,@Region,@PostDate,@InspectionDate,@Citation,@InspState,@UnitType,@InspLevel,@Basic,@Section,@Description,@OOS,@Severity,@OOSWeight,@TimeWeight,@Points,@License,@State,@VIN,@Unit,@CostCenter,@UnitDesc,@HomeTerm,@TerminalName,@ShopEmail,@TerminalEmail,@TermMgr,@Count)"
con2.Open()
For Each dr As DataRow In table.Rows
With com2.Parameters
.Clear()
.AddWithValue("@DriverNumber", dr("Driver Number"))
.AddWithValue("@Name", dr("Name"))
.AddWithValue("@Terminal", dr("Terminal"))
.AddWithValue("@Region", dr("Region"))
.AddWithValue("@PostDate", Convert.ToDateTime(dr("Post Date")))
.AddWithValue("@InspectionDate", Convert.ToDateTime(dr("Inspection Date")))
.AddWithValue("@Citation", dr("Citation"))
.AddWithValue("@InspState", dr("Insp State"))
.AddWithValue("@UnitType", dr("Unit Type"))
.AddWithValue("@InspLevel", dr("Insp Level"))
.AddWithValue("@Basic", dr("Basic"))
.AddWithValue("@Section", dr("Section"))
.AddWithValue("@Description", dr("Description"))
.AddWithValue("@OOS", dr("OOS"))
.AddWithValue("@Severity", dr("Severity"))
.AddWithValue("@OOSWeight", dr("OOS Weight"))
.AddWithValue("@TimeWeight", dr("Time Weight"))
.AddWithValue("@Points", dr("Points"))
.AddWithValue("@License", dr("License"))
.AddWithValue("@State", dr("State"))
.AddWithValue("@VIN", dr("VIN"))
.AddWithValue("@Unit", dr("Unit"))
.AddWithValue("@CostCenter", dr("Cost Center"))
.AddWithValue("@UnitDesc", dr("Unit Descr"))
.AddWithValue("@HomeTerm", dr("Home Term"))
.AddWithValue("@TerminalName", dr("Terminal Name"))
.AddWithValue("@ShopEmail", dr("Shop E-mail"))
.AddWithValue("@TerminalEmail", dr("Terminal E-mail"))
.AddWithValue("@TermMgr", dr("Term Mgr"))
.AddWithValue("@Count", dr("Count"))
End With
'com2 = New OleDb.OleDbCommand(Query, con2)
com2.ExecuteNonQuery()
Next
MessageBox.Show("Captured Data has Updated Incoming CSA", "Required", MessageBoxButtons.OK, MessageBoxIcon.Exclamation)
con2.Close()
Catch ex As Exception
MsgBox(ex.ToString)
Finally
If con2.State = ConnectionState.Open Then
con2.Close()
End If
ds.Tables.Clear()
End Try
End Sub
答案 0 :(得分：1)
尝试
con2.ConnectionString = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=O:\Maintenance\BWALLER\CSA AUTO\CSA.accdb;"
com2.Connection = con2
com2.CommandText = "DELETE FROM T_INCOMING2"
con2.Open()
com2.ExecuteNonQuery()
con2.Close()
com2.Connection = con2
com2.CommandText = "DELETE FROM INCOMING3"
con2.Open()
com2.ExecuteNonQuery()
con2.Close()
com2.Connection = con2
com2.CommandText = "INSERT INTO T_INCOMING2 ([DriverNumber],[Name],[Terminal],[Region],[PostDate],[InspectionDate],[Citation],[InspState],[UnitType],[InspLevel],[Basic],[Section],[Description],[OOS],[Severity],[OOSWeight],[TimeWeight],[Points],[License],[State],[VIN],[Unit],[CostCenter],[UnitDesc],[HomeTerm],[TerminalName],[ShopEmail],[TerminalEmail],[TermMgr],[Count]) VALUES " & _
"(@DriverNumber,@Name,@Terminal,@Region,@PostDate,@InspectionDate,@Citation,@InspState,@UnitType,@InspLevel,@Basic,@Section,@Description,@OOS,@Severity,@OOSWeight,@TimeWeight,@Points,@License,@State,@VIN,@Unit,@CostCenter,@UnitDesc,@HomeTerm,@TerminalName,@ShopEmail,@TerminalEmail,@TermMgr,@Count) "
con2.Open()
For Each dr As DataRow In table.Rows
With com2.Parameters
.Clear()
.AddWithValue("@DriverNumber", dr("Driver Number"))
.AddWithValue("@Name", dr("Name"))
.AddWithValue("@Terminal", dr("Terminal"))
.AddWithValue("@Region", dr("Region"))
.AddWithValue("@PostDate", Convert.ToDateTime(dr("Post Date")))
.AddWithValue("@InspectionDate", Convert.ToDateTime(dr("Inspection Date")))
.AddWithValue("@Citation", dr("Citation"))
.AddWithValue("@InspState", dr("Insp State"))
.AddWithValue("@UnitType", dr("Unit Type"))
.AddWithValue("@InspLevel", dr("Insp Level"))
.AddWithValue("@Basic", dr("Basic"))
.AddWithValue("@Section", dr("Section"))
.AddWithValue("@Description", dr("Description"))
.AddWithValue("@OOS", dr("OOS"))
.AddWithValue("@Severity", dr("Severity"))
.AddWithValue("@OOSWeight", dr("OOS Weight"))
.AddWithValue("@TimeWeight", dr("Time Weight"))
.AddWithValue("@Points", dr("Points"))
.AddWithValue("@License", dr("License"))
.AddWithValue("@State", dr("State"))
.AddWithValue("@VIN", dr("VIN"))
.AddWithValue("@Unit", dr("Unit"))
.AddWithValue("@CostCenter", dr("Cost Center"))
.AddWithValue("@UnitDesc", dr("Unit Descr"))
.AddWithValue("@HomeTerm", dr("Home Term"))
.AddWithValue("@TerminalName", dr("Terminal Name"))
.AddWithValue("@ShopEmail", dr("Shop E-mail"))
.AddWithValue("@TerminalEmail", dr("Terminal E-mail"))
.AddWithValue("@TermMgr", dr("Term Mgr"))
.AddWithValue("@Count", dr("Count"))
End With
com2.ExecuteNonQuery()
Next
con2.Close()
com2.CommandText = "INSERT INTO INCOMING2 " & _
"SELECT T_INCOMING2.* " & _
"FROM INCOMING2 RIGHT JOIN T_INCOMING2 ON INCOMING2.[Name] = T_INCOMING2.[Name] AND INCOMING2.[PostDate] = T_INCOMING2.[PostDate] AND INCOMING2.[Section] = T_INCOMING2.[Section] " & _
"WHERE ((((T_INCOMING2.[Name]) Not In (INCOMING2.[Name])) And ((T_INCOMING2.[PostDate]) Not In (INCOMING2.[PostDate])) And ((T_INCOMING2.[Section]) Not In (INCOMING2.[Section]))));"
con2.Open()
com2.ExecuteNonQuery()
con2.Close()
com2.CommandText = "INSERT INTO INCOMING3 " & _
"SELECT * " & _
"FROM INCOMING2;"
con2.Open()
com2.ExecuteNonQuery()
con2.Close()
com2.Connection = con2
MessageBox.Show("Captured Data has Updated Incoming CSA", "Required", MessageBoxButtons.OK, MessageBoxIcon.Exclamation)
Catch ex As Exception
MsgBox(ex.ToString)
Finally
If con2.State = ConnectionState.Open Then
con2.Close()
End If
ds.Tables.Clear()
End Try