SqlParameter 构造函数

 CONSTRUCTOR(
	xValue,
	nIO,
	nODBCType,
	nSize
) CLIPPER

[ClipperCallingConventionAttribute(new string[] { ... })]
public SqlParameter(
	__Usual xValue = default,
	__Usual nIO = default,
	__Usual nODBCType = default,
	__Usual nSize = default
)