private void m_cbWritingSystem_SelectedIndexChanged(object sender, EventArgs e)
{
var ws = m_cbWritingSystem.SelectedItem as IWritingSystem;
if (ws == null)
{
Debug.Assert(m_cbWritingSystem.SelectedIndex == -1);
return;
}
m_tbSearchText.WritingSystemCode = ws.Handle;
ITsStrFactory tsf = TsStrFactoryClass.Create();
m_tbSearchText.Tss = tsf.MakeString(m_tbSearchText.Text.Trim(), ws.Handle);
}