Updatepanel reports Microsoft JScript runtime error: SYS. webforms. pagerequestmanagerparsererrorexception: Solution

 

When updatepanel1 is used, the following errors are often reported. When the Textbox Control is output, both English and numbers and general Simplified Chinese can be used normally, but some with special symbols such as <> ,. /', the following error is reported,

Microsoft JScript runtime error: SYS. webforms. pagerequestmanagerparsererrorexception: the message was Ed from the server cocould not be parsed. common causes for this error are when the response is modified by cballs to response. write (), response filters, httpmodules,
Or server trace is enabled.
Details: Error parsing near '<B> oops! Looks like '.

 

Solution:

Add in aspx

Validaterequest = "false"

: