dwLength 字段
Represents an unsigned integer that contains the length of the data in the union.
命名空间： Microsoft.SqlServer.Dts.Runtime.Wrapper
程序集： Microsoft.SqlServer.DTSRuntimeWrap（在 Microsoft.SqlServer.DTSRuntimeWrap.dll 中）
语法
声明
Public dwLength As UInteger
用法
Dim instance As DTP_VARIANT
Dim value As UInteger
value = instance.dwLength
instance.dwLength = value
public uint dwLength
public:
unsigned int dwLength
val mutable dwLength: uint32
public var dwLength : uint
注释
For types like Long, this does not provide useful information, but for types like DT_BYTES, this value tells you how much data is actually available.