申请人的身份证明及有关指定委托的证明文件；
Proof of the applicant's identity and the relevant designation;
在创建控件的基础句柄所在线程上异步执行指定委托。
Executes the specified delegate asynchronously on the thread that the control's underlying handle was created on.
在创建控件的基础句柄所在线程上，用指定的参数异步执行指定委托。
Executes the specified delegate asynchronously with the specified arguments, on the thread that the control's underlying handle was created on.
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