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  3. Judgment ID is not empty, how to do? If (Request.Params ["ID"]! = Null)

Judgment ID is not empty, how to do? If (Request.Params ["ID"]! = Null)

xiaoxiao2021-03-06  103

Int ID;

Try {

ID = int.parse (Request.QueryString ["ID"];

}

Catch {

ID = 1;

}

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