vb入門+vs2010(20180208)
1.創建窗體
在彈出菜單中選擇【添加】---->【Windows窗體】,然後輸入窗體名(我都用的默認名),單擊完成
2.添加控件
在窗體上添加一個Button按鈕
3.添加代碼
Public Class Form1
Private Sub Button1_Click(sender As System.Object, e As System.EventArgs) Handles Button1.Click
‘-----------------------if多重判斷用例--------------------------
‘ If CInt(TextBox1.Text) > 5 Then
‘ MessageBox.Show("你輸入的數大於5")
‘ ElseIf CInt(TextBox1.Text) = 5 Then
‘ MessageBox.Show("你輸入的數等於5")
‘ Else
‘ MessageBox.Show("你輸入的數小於5")
‘
‘ End If
‘-----------------------select case用例-------------------------
‘Dim a As Integer = CInt(TextBox1.Text)
‘Select Case a
‘ Case 1, 3, 5, 7, 9
‘ MessageBox.Show("你輸入的是小於10的單數")
‘ Case 8 To 12
‘ MessageBox.Show("你輸入的是8到12之間的數")
‘ Case 13 To 25
‘ MessageBox.Show("你輸入的是13到25之間的數")
‘ Case 31 To 35, Is > 50
‘ MessageBox.Show("你輸入的是31到35之間的數或大於50的數")
‘End Select
‘----------------------for.....next語句用例---------------------
‘Dim i, s As Integer
‘For i = 0 To 100
‘ s = s + i
‘Next
‘MessageBox.Show("累計和為" & (s))
‘----------------------for.....each語句用例---------------------
‘ Dim i As Integer
‘ Dim a() As String = {"第二章", "語法學習", "學習"}
‘ For Each a(i) In a
‘ MessageBox.Show(a(i))
‘ Next
End Sub
End Class
今天就寫這麽些吧!
明天繼續!
vb入門+vs2010(20180208)