比如说,你要点一下按钮,就访问google,那就拖个button出来,写入下代码,记得添加引用:
using System.Diagnostics;
private void button1_Click(object sender, EventArgs e)
        {
            Process myProcess = new Process();
            myProcess.StartInfo.FileName = "iexplore.exe";
            myProcess.StartInfo.Arguments = "http://www.google.com";
            myProcess.Start();

        }