private void button1_Click(object sender, EventArgs e)
{
if(formSendData==null||formSendData.IsDisposed)
{
formSendData = new FormDataShow();
}
formSendData.Show();
dataShow += formSendData.ShowData;
formSendData.FormClosing += new FormClosingEventHandler(formSendData_FormClosing);
}
