WPF 字符串溢出判断,字符串长度是否超过控件宽度

TextBloc可以将TextTrimming属性设置为CharacterEllipsis

 

其他控件可以在控件大小变更或者其他事件上附加下列方法

        private void OnEllipsis(object sender, SizeChangedEventArgs e)
        {
            FormattedText formattedText = new FormattedText(
                this.Header.ToString(),
                Thread.CurrentThread.CurrentCulture,
                this.FlowDirection,
                new Typeface(this.FontFamily, this.FontStyle, this.FontWeight, this.FontStretch),
                this.FontSize,
                this.Foreground);

            this.IsEllipsis = formattedText.Width > e.NewSize.Width;
        }