VB.NET “System.Data.OleDb.OleDbException”类型的未经处理的异常在 System.Data.dll 中发生

[liangwei423]

我是初学者，这个问题怎么解决 什么原因啊 谢谢大家了
下面是 源代码：
Imports System.Data.OleDb
Public Class Form1

Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
Dim str As String = "Provider = Microsoft.Jet.OLEDB.4.0;Data Source = F:\VB.example\1005"
Dim conn As New OleDbConnection(str)
Dim fldnames, sturec As String
conn.Open()
'建立command对象，并发送从stuinfo表中读取所有记录的SQL命令
Dim command As New OleDbCommand("Select * From [shuju]", conn)
Dim dr As OleDbDataReader
dr = command.ExecuteReader
TextBox1.Text = ""
fldnames = ""
For i = 0 To dr.FieldCount - 1
fldnames = fldnames & dr.GetName(i) & ""
Next
TextBox1.Text = TextBox1.Text & fldnames & vbCrLf
Do While dr.Read()
sturec = ""
For i = 0 To dr.FieldCount - 1
sturec = sturec & dr.Item(i).ToString & ""
Next
'讲当前记录添加到文本框中
TextBox1.Text = TextBox1.Text & sturec & vbCrLf
Loop
dr.Close() '关闭oledbdatareader对象
conn.Close()
End Sub

[ivanwfy]

Data Source = F:\VB.example\1005" 这句是不是错了，数据库没有扩展名的么

[楚狂歌]

1005是文件夹还是MDB文件？自己去路径下找

[楚狂歌]

最好加上Try-catch结构

[betteran00]

我也遇到了这个问题,你是怎么解决的呀?