/// <summary>
/// Adds shapefile feature attributes to a <see cref="MapFeature"/> as metadata.
/// </summary>
/// <param name="targetFeature">The <see cref="MapFeature"/> whose metadata will be updated.</param>
/// <param name="sourceFeatureIndex">The index of the feature in the shapefile on which the <see cref="MapFeature"/> is based.</param>
/// <remarks> Attributes with <see cref="DBNull"/> value are translated to a <c>null</c> value in the
/// <see cref="MapFeature.MetaData"/>.</remarks>
protected void CopyMetaDataIntoFeature(MapFeature targetFeature, int sourceFeatureIndex)
{
DataRow dataRow = ShapeFile.GetAttributes(sourceFeatureIndex, 1).Rows[0];
List <Field> columns = ShapeFile.DataTable.Columns.OfType <Field>().ToList();
for (var i = 0; i < columns.Count; i++)
{
object dataRowValue = dataRow[i];
object newValue = null;
Field column = columns[i];
if (!(dataRowValue is DBNull))
{
if (column.TypeCharacter != 'C' && dataRowValue is string)
{
string nullValue = string.Join(string.Empty, Enumerable.Repeat('*', column.Length));
if (!Equals(dataRowValue, nullValue))
{
newValue = dataRowValue;
}
}
else
{
newValue = dataRowValue;
}
}
targetFeature.MetaData[column.ColumnName] = newValue;
}
}
