页面上有两个按钮：Button1,Button2。我怎么在Button2中调用Button1中的事件

页面上有两个按钮：Button1,Button2。我如何在Button2中调用Button1中的事件？
例如：在Button2中调用Button1.click事件，怎么做？

[解决办法]
js document.getElementById( 'Button1 ').click();

c# Button1_Click(null,null)
[解决办法]
c#

Button1_Click(this,e)
[解决办法]
private void button2_Click(object sender, EventArgs e)
{
this.button1_Click(sender, e);
}

[解决办法]
private void button2_Click(object sender, EventArgs e)
{
this.button1.PerformClick();
}