public static object GetFieldValue(this OSGeo.OGR.Feature feature, string fieldName)
{
if (feature == null || string.IsNullOrEmpty(fieldName))
{
throw new Exception("参数设置错误");
}
using var fieldDefn = feature.GetFieldDefnRef(fieldName);
object value;
switch (fieldDefn.GetFieldType())
{
case OSGeo.OGR.FieldType.OFTString:
value = feature.GetFieldAsString(fieldName);
break;
case OSGeo.OGR.FieldType.OFTInteger:
value = feature.GetFieldAsInteger(fieldName);
break;
case OSGeo.OGR.FieldType.OFTInteger64:
value = feature.GetFieldAsInteger64(fieldName);
break;
case OSGeo.OGR.FieldType.OFTReal:
value = feature.GetFieldAsDouble(fieldName);
break;
default:
throw new NotImplementedException();
}
return(value);
}
public static object GetFieldValue(this OSGeo.OGR.Feature feature, int index)
{
if (feature == null || index < 0 || index >= feature.GetFieldCount())
{
throw new Exception("参数设置错误");
}
using var fieldDefn = feature.GetFieldDefnRef(index);
object value;
switch (fieldDefn.GetFieldType())
{
case OSGeo.OGR.FieldType.OFTString:
value = feature.GetFieldAsString(index);
break;
case OSGeo.OGR.FieldType.OFTInteger:
value = feature.GetFieldAsInteger(index);
break;
case OSGeo.OGR.FieldType.OFTInteger64:
value = feature.GetFieldAsInteger64(index);
break;
case OSGeo.OGR.FieldType.OFTReal:
value = feature.GetFieldAsDouble(index);
break;
default:
throw new NotImplementedException();
}
return(value);
}
/// <summary>
/// Get value from Ogr feature
/// </summary>
/// <param name="feature">Ogr feature</param>
/// <param name="i">Field index</param>
/// <returns>Value</returns>
public static object GetOgrValue(OSGeo.OGR.Feature feature, int i)
{
switch (feature.GetFieldDefnRef(i).GetFieldType())
{
case OSGeo.OGR.FieldType.OFTString:
return(feature.GetFieldAsString(i));
case OSGeo.OGR.FieldType.OFTInteger:
return(feature.GetFieldAsInteger(i));
case OSGeo.OGR.FieldType.OFTDateTime:
return(GetFieldAsDateTime(feature, i));
case OSGeo.OGR.FieldType.OFTReal:
return(feature.GetFieldAsDouble(i));
default:
return(null);
}
}