C# 切换输入法

我用你的代码试了,是好使的.

因为comboBox你做了筛选，所以comboBox的id和 InputLanguage的id是对不上的
你把后面的改成这样试试

private void comboBox1_SelectedIndexChanged(object sender, EventArgs e)
{
InputLanguageCollection ilc = InputLanguage.InstalledInputLanguages;
foreach (InputLanguage il in ilc)
{
if (il.LayoutName.Contains(comboBox1.Text))
{
InputLanguage.CurrentInputLanguage = il;
this.richTextBox1.Text = il.LayoutName;
}
}

        void comboBox1_SelectedIndexChanged(object sender, EventArgs e)
        {
        //用SelectedItem 属性，你那个SelectedIndex会有问题
            InputLanguage a = this.comboBox1.SelectedItem as InputLanguage;
            if (a != null)
            {
                InputLanguage.CurrentInputLanguage = a;
            }
        }