VB2010实例(1)_字符大小写转换

最新推荐文章于 2021-07-27 19:29:40 发布

ngbshzhn

最新推荐文章于 2021-07-27 19:29:40 发布

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分类专栏： # VB2010实例文章标签： VB2010 实例

本文链接：https://blog.youkuaiyun.com/ngbshzhn/article/details/104034368

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这篇博客介绍了如何在VB2010中实现字符大小写的转换。通过一个实例，展示了在TextBox输入时实时将小写字母转为大写，大写字母转为小写，其他字符则显示星号。用户可以通过清空按钮清除文本框内容，或点击退出按钮关闭窗口。

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Public Class Form1

Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Label3.Text = "e.KeyChar:"
Label4.Text = "e.KeyChar的值："
End Sub
'清除文体框
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
TextBox1.Text = ""
TextBox2.Text = ""
End Sub
'退出
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
Me.Close()
End Sub

Private Sub TextBox1_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles TextBox1.KeyPress
Label