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請幫助我。我在創建的支票打印系統中添加了一個刪除方法,但在它運行良好之前,但是當我將其中的Check_Number
字段的數據類型從text
更改爲number
時,它們不再刪除數據行我選擇。我不記得更改刪除部分的任何代碼。你們有沒有想法如何解決這個問題?先謝謝你。更強大!從datagrid視圖中刪除記錄
不同Bank_ [BANKNAME]具有FF字段和數據類型:
ID - AutoNumber
Check_Number - Number
Company_ID - Text
我VN_ZAM
表具有FF字段和數據類型:
ID - AutoNumber
Voucher_Number - Number
Check_Number - Text
Bank_Type - Text
Company_ID - Text
我SS
表具有FF字段和數據類型(這也是數據網格視圖中的數據取自的地方):
ID - AutoNumber
Check_No - Text
Voucher_No - Text
Issue_Date - Date/Time
Company_Name - Text
Bank_Type - Text
Amount_in_Figure - Number
Amount_in_Words - Text
Payee - Text
我datagridview的順序是這樣的:
ID | Check_No | Voucher_No | Issue_Date | Company_Name |Bank_Type | Amount_in_Figure | Amount_in_Words | Payee
。
Private Sub btnDelete_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnDelete.Click
Dim provider As String
Dim dataFile As String
Dim connString As String
Dim myConnection As OleDbConnection = New OleDbConnection
Dim sql As String
Dim sql1 As String
Dim sql2 As String
Dim answer As Integer
answer = MsgBox("Are you sure you want to delete this record?", vbYesNo + vbDefaultButton1, "Information")
'If answer = vbYes Then
provider = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source ="
dataFile = "C:\Users\Pc\Documents\Visual Studio 2010\Projects\bankCheckSystem\dbcheckprintsystem.accdb"
connString = provider & dataFile
myConnection.ConnectionString = connString
myConnection.Open()
sql = "DELETE * FROM SS WHERE ID =" & dgvSSCheckRecords.SelectedRows(0).Cells(0).Value.ToString()
If dgvSSCheckRecords.SelectedRows(0).Cells(12).Value.ToString() = "ZAM" Then
sql1 = "DELETE * FROM VN_ZAM WHERE Company_ID = '" & dgvSSCheckRecords.SelectedRows(0).Cells(4).Value.ToString() & "_" & dgvSSCheckRecords.SelectedRows(0).Cells(0).Value.ToString() & "' "
Dim cmd As OleDbCommand = New OleDbCommand(sql, myConnection)
Dim cmd1 As OleDbCommand = New OleDbCommand(sql1, myConnection)
'cmd.ExecuteNonQuery()
'cmd1.ExecuteNonQuery()
If dgvSSCheckRecords.SelectedRows(0).Cells(5).Value.ToString() = "BDO" Then
sql2 = "DELETE * FROM Bank_BDO WHERE Company_ID = '" & dgvSSCheckRecords.SelectedRows(0).Cells(4).Value.ToString() & "_" & dgvSSCheckRecords.SelectedRows(0).Cells(0).Value.ToString() & "' AND Check_Number ='" & dgvSSCheckRecords.SelectedRows(0).Cells(1).Value.ToString() & "'"
Dim cmd2 As OleDbCommand = New OleDbCommand(sql2, myConnection)
cmd.ExecuteNonQuery()
cmd1.ExecuteNonQuery()
cmd2.ExecuteNonQuery()
ElseIf dgvSSCheckRecords.SelectedRows(0).Cells(5).Value.ToString() = "BPI" Then
sql2 = "DELETE * FROM Bank_BPI WHERE Company_ID = '" & dgvSSCheckRecords.SelectedRows(0).Cells(4).Value.ToString() & "_" & dgvSSCheckRecords.SelectedRows(0).Cells(0).Value.ToString() & "' AND Check_Number ='" & dgvSSCheckRecords.SelectedRows(0).Cells(1).Value.ToString() & "'"
Dim cmd2 As OleDbCommand = New OleDbCommand(sql2, myConnection)
cmd.ExecuteNonQuery()
cmd1.ExecuteNonQuery()
cmd2.ExecuteNonQuery()
End if
End Sub
我不熟悉的 「刪除*」 語法。你能提供一個參考嗎? – Strawberry
我不確定你的意思是不熟悉「刪除」語法,但它是一個查詢,用於從數據庫中永久刪除記錄。 https://www.tutorialspoint.com/mysql/mysql-delete-query.htm謝謝。 @Strawberry – Louie
這是'「DELETE」',而不是'「DELETE *」' – Strawberry