C # json serialization of unexpected characters I unexpected characters & #239; solution,

C # json serialization of unexpected characters I unexpected character encoding solution,

This problem occurs when DataContractJsonSerializer is used today.

This is a tough problem. After a long time, I checked the object and json string repeatedly, but I didn't find any problems, and the error prompt was still eye-catching.

Solutions released
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Json string Trim () removes leading and trailing spaces before serialization, json. Trim ()

Are you surprised ~