编辑框调用输入法(转载，未验证)

        private void txtSearch_Enter(object sender, EventArgs e)
        {
            txtSearch.ImeMode = System.Windows.Forms.ImeMode.On;
            //InputLanguage.CurrentInputLanguage=InputLanguage.FromCulture(System.Globalization.CultureInfo.GetCultureInfo("zh-CN"));

            string[] languagename = new string[] { "五笔", "拼音", "中文" };
            bool bResult = false;
            for (int i = 0; i < languagename.Length; i++)
            {
                foreach (InputLanguage lang in InputLanguage.InstalledInputLanguages)
                {
                    if (lang.LayoutName.IndexOf(languagename[i]) >= 0)
                    {
                        InputLanguage.CurrentInputLanguage = lang;
                        bResult = true;
                        break;
                    }
                }

                if (bResult)
                    break;
            }
        }

　　源位置：http://blog.csdn.net/keenweiwei/article/details/7407827