private void AddFields(string shapeFilePath, string fieldName, esriFieldType type)
{
_shapeOp.FilePath = shapeFilePath;
IFeatureClass pFeatureClass = _shapeOp.OpenFeatureClass();
if (pFeatureClass.Fields.FindField(fieldName) == -1)
{
_shapeOp.AddField(pFeatureClass, fieldName, type);
GC.Collect();
}
}
