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This could make any area to be transparent
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Jane
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Use esriSimpleFillStyle.esriSFSHollow. Or even esriSimpleLineStyle.esriSLSNull;esriSLSNull can be used.

Use esriSimpleLineStyle.esriSLSNull;

Use esriSimpleFillStyle.esriSFSHollow. Or even esriSimpleLineStyle.esriSLSNull can be used.

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Jane
  • 1
  • 1

Use esriSimpleLineStyle.esriSLSNull;