Asp.net dynamically loads user-defined controls and converts them to HTML code

If the page is simply created using JS, a large number CodeAnd is not intuitive.
In Asp.net, we can create user-defined controls and return the HTML code of user-defined controls through Ajax requests. Copy codeThe Code is as follows: public static string rangeruscontrol (string controlname)
{
Stringbuilder build = new stringbuilder ();
Htmltextwriter htmlwriter = new htmltextwriter (New stringwriter (build ));
Usercontrol UC = new usercontrol ();
Control CTRL = UC. loadcontrol (controlname + ". ascx "); // load the textbox txtbox1 = ctrl. findcontrol ("textbox1") as textbox; // obtain the control whose ID is "textbox1"
Txtbox1.text = "test"; // initialize string result for the control;
Try
{
CTRL. rendercontrol (htmlwriter );
}
Catch {}
Finally
{
Htmlwriter. Flush ();
Result = build. tostring ();
}
Return result; // return the HTML code of the control.
}
Htmlwriter. Flush ();