[gdal-dev] Update existing shape file

[Frank Warmerdam]

wow wrote:
> Hi,
>   I wanna set new field value to an existing shape file which has been 
> opened with update access, but it doesn't work, my code like this:
>  
>   OGRFeature* pFeature = pLayer->GetFeature(2); 
>   int nIdx = pFeature->GetFieldIndex("Name");
>  pFeature->UnsetField(nIdx);
>  pFeature->SetField( "Name", "hanJ reiver" );
>  
>   Anyone give me some advices?

Chen Xuexia,

After modifying the in memory feature, you need to write it back to the
file using OGRLayer::SetFeature().

Best regards,
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