设置TextBox控件属性 ImeMode=Disable ShortcutsEnabled=False VB.NET Private Sub TextBox1_KeyDown(sender As Object, e As KeyEventArgs) Handles TextBox1.KeyDown If e.KeyCode = Keys.Space Then e.SuppressKeyPress = True End Sub C# private void TextBox1_KeyDown(o
Dim Str As String = "" Private Sub txtRecond_KeyUp(sender As System.Object, e As System.Windows.Forms.KeyEventArgs) Handles txtRecond.KeyUp txtRecond.Text = Regex.Replace(txtRecond.Text, "[^0-9]", "") If txtRecond.Text = &quo
因为在 IValueConverter 实现中,当文本不能转换为目标类型时返回 DependencyProperty.UnsetValue ,Validation.GetHasError 返回 true ,为何要绕一个圈让用户输入不能转换的文本,然后再获取错误状态呢?不如直接不让用户输入错误文本,于是写了一个 Behavior 派生类: using System; using System.Collections.Generic; using System.Linq; using System.