出错信息:“project project1.exe raised exception class evarianttypecasterror with message 'Could not convert
variant of type(Null)into type(String)'.process stopped.
use step or run to continue"
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请请,mssql与ado连接后,调用出错????
出错信息:“project project1.exe raised exception class evarianttypecasterror with message 'Could not convert variant of type(Null)into type(String)'.process stopped. use step or run to continue"