Add automatically running JS Code to the server

It is not a complicated task, but a serverCodeTo control the running of a JS function during client loading. But it took a long morning, the first thing was to use

Page. clientscript. registerclientscriptblock (typeof (string), "fomrjs", JS );

This JS block will be placed before </form> and run before window. onload. If it is not complex code, such as alert, there is no problem at all. However, the JS functions I use are just complicated, and errors are reported every time. Copy the code and move the JS block between </form> and </body>. Therefore, consider how to put JS blocks out of </form>.

Find a method that can be added to the

// Add head
Htmlgenericcontrol include2 = new htmlgenericcontrol ("script ");
Include2.attributes. Add ("type", "text/JavaScript ");
Include2.innerhtml = JS;
Page. header. Controls. Add (include2 );

However, you cannot access the body or document object. You can only access the form object, corresponding to the form tag or page. controls, but add the code to the </body> field.

I had to test the onload method, but I don't want to manually add onload to the page's body tag every time. I hope this event can be written and processed purely on the server. The result is still unable to be successful because the body tag cannot be accessed.

The final method is to use registerclientscriptblock to execute a code and specify the event processing as follows:

Page. clientscript. registerstartupscript (typeof (string), "fomrjs", "window. attachevent ('onload', function () {alertwin ('title dfadsa ', 'content here', 300,200) ;}", true );
Or

Page. clientscript. registerstartupscript (typeof (string), "fomrjs", "document. body. onload = function () {alertwin ('title dfadsa ', 'Here is the content', 300,200);} ", true );