vb.net实验小程序的简单介绍
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。
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在form添加一个label 和四个command1(组成一个控件组修改index属性，按顺序设置为ABCD)和一个command2(可要可不要，这个是作为跳过用的)
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
command2_Click()就直接显示下一题和更改questionid
问题结束后就OK了，之后要加什么可以自己加上去~
VB.NET怎么编模拟袖珍计算器的完整程序？
Public C护激篙刻蕻灸戈熏恭抹lass Form1
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim c As Char
c = Trim(TextBox3.Text)
Select Case c
Case "+"
TextBox4.Text = Val(TextBox1.Text) + Val(TextBox2.Text)
Case "-"
TextBox4.Text = Val(TextBox1.Text) - Val(TextBox2.Text)
Case "*"
TextBox4.Text = Val(TextBox1.Text) * Val(TextBox2.Text)
Case "\"
If Val(TextBox2.Text) = 0 Then
MsgBox("分母为0")
Else
TextBox4.Text = Val(TextBox1.Text) \ Val(TextBox2.Text)
End If
Case "/"
If Val(TextBox2.Text) = 0 Then
MsgBox("分母为0")
Else
TextBox4.Text = Val(TextBox1.Text) / Val(TextBox2.Text)
End If
End Select
End Sub
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
End
End Sub
End Class
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
Dim strConnect As String = "Provider= OraOLEDB.Oracle;Data Source=888;User ID=888;Password=888;"
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 有关循环的小程序
添加一个按钮和一个文本框，X不要太大，会溢出的！
Try
Dim i, j As Integer
Dim sum As Long
i = 1
sum = 0
For j = 1 To TextBox1.Text
sum += i
i = i * 2
Next
MessageBox.Show("结果：" sum.ToString())
Catch ex As Exception
MessageBox.Show(ex.Message, "Warning", MessageBoxButtons.OK, MessageBoxIcon.Warning)
End Try
文章题目：vb.net实验小程序的简单介绍
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