vb编程语言 val(text),text,text.text的区别及作用

Private Sub Command1_Click()Dim d If (Val(Text1.Text) > Val(Text2.Text)) Then If (Val(Text1.Text) > Val(Text3.Text)) Then Label1.Caption = "最大值" + Text1.Text Else Label1.Caption = "最大值" + Text3.Text End If Else If (Val(Text2.Text) > Val(Text3....

将Txt4的Text属性由字符串转化为数字

把text1中的数值加上text2中的数值,得出的结果再赋值给text1.如:text1.text="6"text2.text="4"text1.text=val(text1.text)+val(text2.text)text1.text就等于10 如果不加val()text1.text就会等于64

Private Sub Combo1_Click()Select Case Combo1.ListIndex Case 0 Text3.Text=val(Text2.Text)+val(Text1.Text)Case 1 Text3.Text=val(Text2.Text)-val(Text1.Text)End Select End Sub 你的代码错误所在：1、选择Combo的下拉选项时不会触发Change事件，只有改变输入框的内容时才触 发 2、...

第一题，按照阁下的题意，在窗体上放3个文本，3个标签，一个标签对应一个文本，2个命令按纽，如下图，代码如下 Private Sub Command1_Click()Dim a As Double, b As Long a = Val(Text1.Text)b = Val(Text2.Text)Text3.Text = a * b If Text2.Text = "" Then Text2.Text = 1:...

就是直接定义X为Single （单精度类型）等同于 ：dim X as Single X=Val(text1.text)

使用格式化函数将计算按你需要形式格式一下就行了：Format(val(Text2.Text) / val(Text3.Text) * 100,"0.000")

Private Sub Command1_Click()Dim a As Integer,b As Integera=Val(Text1.Text)b=Val(Text2.Text)Text3.Text=a+bEnd Sub在这段VB程序中，“a=Val(Text1.Text)b=Val(Text2.Text)”是加法的代码。代码如下：Private Sub Command1_Click()Label2.Caption = Val(Text1.Text) + Val(Text2....

Private Sub Command1_Click()Dim myMonth As IntegerDim myYear As IntegermyYear = Val(Text1.Text)myMonth = Val(Text2.Text)Text3.Text = DateDiff("d", myYear & "-" & myMonth & "-" & "1", myYear & "-" & myMonth + 1 & "-" & "1")End SubPrivate Sub Form_Load...

Private Sub Command1_Click() Dim a, b, c, x1, x2 a = Val(Text1.Text) b = Val(Text2.Text) c = Val(Text3.Text) If (b ^ 2 - 4 * a * c) > 0 Then x1 = (-b + Sqr(b ^ 2 - 4 * a * c)) / (2 * a) x2 = (-b - Sqr(b ...