Attributes usage in C #

I have studied the attributes usage in C # And it is very useful. The following is a summary:

The script method written in JS on the foreground can be used not only in the properties of the foreground control, but also in the background.

That is, when loading the background page, the js method is called. There are two syntax formats:

Method 1:Control ID. Attributes. Add ("event name", "js method ");

For example, a button control button1.attributes. Add ("onclick", "Return confirm ('OK? ')");

Another statement:Control ID. attributes ["event name"] = "js method ";

For example, the front-end writes a js method: function ischeck (){......};

Button1.attributes ["onclick"] = "ischeck ()";

You can also control attributes of a text box, such as the size and width of the text box.

For example, textbox1.attributes. Add ("width", "80px ");