Warning: file_get_contents(/data/phpspider/zhask/data//catemap/1/vb.net/14.json): failed to open stream: No such file or directory in /data/phpspider/zhask/libs/function.php on line 167

Warning: Invalid argument supplied for foreach() in /data/phpspider/zhask/libs/tag.function.php on line 1116

Notice: Undefined index: in /data/phpspider/zhask/libs/function.php on line 180

Warning: array_chunk() expects parameter 1 to be array, null given in /data/phpspider/zhask/libs/function.php on line 181
如何在vb.net的列表框中添加列表项_Vb.net_Listbox - Fatal编程技术网

如何在vb.net的列表框中添加列表项

如何在vb.net的列表框中添加列表项,vb.net,listbox,Vb.net,Listbox,我正试图通过下面的代码在listbox中添加列表项 如果我错了,请纠正我。。 下面的代码给出了奇怪的输出 Try Dim adapter As New OleDbDataAdapter con = New OleDbConnection(connectionString) con.Open() Dim dt As New DataTable Dim ds As New DataSet sqlstr =

我正试图通过下面的代码在listbox中添加列表项 如果我错了,请纠正我。。 下面的代码给出了奇怪的输出

Try
        Dim adapter As New OleDbDataAdapter
        con = New OleDbConnection(connectionString)
        con.Open()
        Dim dt As New DataTable
        Dim ds As New DataSet
        sqlstr = "select * from partyinfo "
        ds.Tables.Add(dt)
        adapter.SelectCommand = New OleDbCommand(sqlstr, con)
        adapter.Fill(dt)
        lbpartylink.DataSource = ds.Tables(0)
        lbpartyunlink.ValueMember = "partyid"
        lbpartyunlink.DisplayMember = "partyname"
        con.Close()
    Catch ex As Exception
        MsgBox("error found")
    End Try
我写的是我的错

lbpartylink.DataSource = ds.Tables(0)
代替
lbpartyulink.DataSource=ds.Tables(0)

您得到的奇怪结果是什么?你能说得更具体些吗?另一方面,如果从未使用过数据集,为什么还要创建它呢?