“Sometimes it's useful to use one of the selected colors or fonts the user has chosen in theWindows Control Panel Personalization applet (or the older Display Settings in Windows XP),such as Window caption, Desktop color, and Selection color. Further
string str1 = ((ComboBoxItem)this.cboBoxRate1553B.Items[this.cboBoxRate1553B.SelectedIndex]).Tag.ToString(); string str2 = (this.cboBoxRate1553B.SelectedItem as ComboBoxItem).Tag.ToString(); 不知道为什么只能先转换为var 或者string类型,再转化为其他类型. I have a combo box lik