Question

str = dgemp_monthlyshare.Item(3, i).Value 'value to fetch from datagrid
db = CInt(Val(str))
Double.TryParse(str, dub)              
qr = "insert into tbshare_purchase(share_purchase) values('" + dub + "')"' here generates error

需要检查查询语句，因为即使将字符串转换为double后它也会生成错误。我正在使用access2000和vb.net 2005

Answer 1

尝试

qr = "insert into tbshare_purchase(share_purchase) values(" & cstr(dub) & ")"'

Answer 2

我明白了！ MS-access需要如下格式的字符串来存储数字。

qr = "insert into tbshare_purchase(share_purchase) values(@share_purchase)"' `     `da = New OleDbDataAdapter(qr, con)' 'da.SelectCommand.Parameters.AddWithValue("@share_purchase", 'Convert.ToInt32(str))' –

保存双数据类型会生成错误

2 个答案: