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Delphi(Pascal) code:
try
szSelected:= dbgrdShowData.SelectedField.Text;

except
MessageBox(Handle,'»¹Ã»ÓÐÑ¡ÔñÒª²é¿´µÄÐÅÏ¢£¬ÇëÑ¡Ôñ','´íÎó',MB_ICONERROR);
end;


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---------------------------
Debugger Exception Notification
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Project ExamInfoManager.exe raised exception class EAccessViolation with message 'Access violation at address 0047F73D in module 'ExamInfoManager.exe'. Read of address 000000D2'. Process stopped. Use Step or Run to continue.
---------------------------
OK  Help 
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procedure RunFunction;  
  type  
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  var  
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