怎么判断数据集是否打开
如何判断数据集是否打开？
如何判断数据集是否打开？
------解决方案--------------------
CRecordset::IsOpen
BOOL IsOpen( ) const;
Return Value
Nonzero if the recordset object’s Open or Requery member function has previously been called and the recordset has not been closed; otherwise 0.
Remarks
Call this member function to determine if the recordset is already open.
CRecordset Overview | Class Members | Hierarchy Chart
------解决方案--------------------
recordset 有State 属性，如等于adStateOpen，即为打开。
如何判断数据集是否打开？
------解决方案--------------------
CRecordset::IsOpen
BOOL IsOpen( ) const;
Return Value
Nonzero if the recordset object’s Open or Requery member function has previously been called and the recordset has not been closed; otherwise 0.
Remarks
Call this member function to determine if the recordset is already open.
CRecordset Overview | Class Members | Hierarchy Chart
------解决方案--------------------
recordset 有State 属性，如等于adStateOpen，即为打开。