0
我有这样的代码:错误:从字符串转换“串行”键入“整数”是无效的
Dim dv As New DataView(_DataSet.Tables(0))
' select deleted rows
dv.RowStateFilter = DataViewRowState.Deleted
For _irow As Long = 0 To dv.Table.Rows.Count - 1
If Not IsDBNull(dv!serial) Then
txtSerial.Text = (dv!serial).ToString
Dim strconnection As String = "Data Source=EASMAR-PC;Initial Catalog=Database Connection;Integrated Security=True;"
Dim _cn As SqlConnection = New SqlConnection(strconnection)
_cn.Open()
Dim cmd As New SqlCommand
cmd.CommandText = "Delete from tblCustomer where serial= " & (dv!serial).ToString
End If
Next
我只是循环槽的数据视图(如果rowwstate被删除时,从数据库中删除) 。
我收到此错误:Conversion from string "serial" to type 'Integer' is not valid.
在这条线:If Not IsDBNull(dv!serial) Then
任何想法?
可能重复[从字符串转换 “” 长期是无效的(http://stackoverflow.com/questions/14726120 /从字符串到字符串的转换是无效的) – varocarbas
PS:实际的副本是http://stackoverflow.com/questions/20934242/conversion-from-string-to-type-long-是无效的(但是,只要它没有任何回复/接受的答案,它就不能被设置为“官方副本”)。 – varocarbas
好的。还有一件事;数据库中应该包含什么类型的“serial”? – user2968155