Can not create object of specified Activex control

Question

i have developed the user control in C#.NET & register using regasm .but when i have used this another software it will display the error message like "Failed to create graphic object  from type PrisonerControl.  " or register using regsvr32 it will show following message
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RegSvr32
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D:\ABc\ABc\bin\Debug\ABc.dll was loaded, but the DllRegisterServer entry point was not found.
 
This file can not be registered.
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OK
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Exposing Windows Forms Controls as ActiveX controls[^]
used the same coding in this example

how to set the entry point to activeX dll?

thanks