C#调用浏览器打开特定网页

protected void LB1_Click1(object sender, EventArgs e)

    {

        MessageBox.Show( null, "将打开百度", "来自网页的消息",MessageBoxButtons.OKCancel,MessageBoxIcon.Information); 

        System.Diagnostics.Process.Start("Http://www.baidu.com");
    }

        private void button1_Click(object sender, EventArgs e)

        {

            Process.Start("iexplore.exe", @"http:\\www.baidu.com");

        }