1 <StackPanel Margin="10">
2         <TextBox Text="默认"></TextBox>
3         <TextBox InputMethod.PreferredImeState="On" InputMethod.PreferredImeConversionMode="Native" Text="打开输入法"/>
4         <TextBox InputMethod.PreferredImeState="Off" Text="关闭输入法"/>
5     </StackPanel>

1 InputMethod.SetPreferredImeConversionMode(txtIpA, ImeConversionModeValues.Native);//打开输入法
2 InputMethod.SetPreferredImeState(txtIpA, InputMethodState.On);//启用用输入法
6 InputMethod.SetPreferredImeState(txtIpB, InputMethodState.Off);//禁用输入法