vb.net小程序_vb小程序制作简单

VB.net做一个小程序 求教

Private Sub Form1_Load(sender As Object, e As EventArgs) Handles MyBase.Load

Dim oleDbConnection1 As OleDb.OleDbConnection

Dim oledbDataAdapter As OleDb.OleDbDataAdapter

Dim oledbData As DataSet = New DataSet

oleDbConnection1 = New System.Data.OleDb.OleDbConnection(strConnect)

Dim strSql As String

strSql = "select *" " from xx"

Dim oledbCommand As OleDb.OleDbCommand

oledbCommand.CommandText = strSql

oledbCommand.CommandType = CommandType.Text

oledbCommand.Connection = oleDbConnection1

oledbDataAdapter.SelectCommand = oledbCommand

oleDbConnection1.Open()

oledbDataAdapter.Fill(oledbData, "gy_bingrenxx")

oleDbConnection1.Close()

'在窗体上添加一个DataGridView控件,在这个位置加一句代码

DataGridView1.DataSource = oledbDataAdapter.Tables("gy_bingrenxx")

End Sub

VB.NET写的智能设备小程序,需要GC么?Application.exit是否能释放资源?

如果一个程序要用Application.exit来退出,那说明太失败了...

一般来说,都是用close关闭就可以了.

用.NET平台开发,只要你在操作数据库或者IO的时候没有忘记关闭资源连接,一般是不需要你手动释放的.

vb.net的小程序

你要做一个考试系统?这可不是小程序,不过如果是超精简的话,我倒可以写个思路给你.

定义全局变量 questions() as string,questionid as integer,answers() as string

在form_load中,将问题和答案读入questions()和answers()中,然后将第一个问题显示在label中,设置questionid=1

之后在command1_click(index as integer)中用select语句根据questionid将答案和回答比较,然后显示下一题,同时更改questionid...大概就这样

问题结束后就OK了,之后要加什么可以自己加上去~

求写一个VB.Net小程序

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click

Dim d(,) As Integer

Dim n As Integer

Dim i As Integer

Dim j As Integer

Randomize()

ReDim d(n, n)

Label1.Text = ""

For i = 1 To n

For j = 1 To n

Label1.Text = Label1.Text d(i, j) " "

Next

Label1.Text = Label1.Text vbCrLf

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