/// <summary>
/// 从指定要素中获取数据插入到目标要素类中，并将图形坐标系转为与目标要素类一致
/// </summary>
/// <param name="features"></param>
/// <param name="targetClass"></param>
public static void CopyDataToProjectShape(this IEnumerable <IFeature> features, IFeatureClass targetClass)
{
//获取源要素类与目标要素类相同的字段的索引，不含Shape字段
var dict = new Dictionary <int, int>(); //key：字段在源要素类的索引；value：在目标要素类中的索引
var sourceFields = features.First().Fields;
var tarShapeFieldIndex = sourceFields.FindField(targetClass.ShapeFieldName); //目标要素类的Shape字段索引
for (var i = 0; i < sourceFields.FieldCount; i++)
{
var index1 = targetClass.FindField(sourceFields.get_Field(i).Name);
if (index1 > -1 &&
index1 != tarShapeFieldIndex &&
targetClass.Fields.get_Field(index1).Editable)//获取可编辑、非Shape字段
{
dict.Add(i, index1);
}
}
CopyDataTo(features, targetClass, (sourceFeature, tarFeatureBuffer) =>
{
//赋值非Shape字段
foreach (var pair in dict)
{
tarFeatureBuffer.set_Value(pair.Value, sourceFeature.get_Value(pair.Key));
}
//投影变换，赋值Shape字段
var shape = sourceFeature.ShapeCopy;
var spatialReference = targetClass.GetSpatialRef();
shape.Project(spatialReference);
tarFeatureBuffer.Shape = shape;
});
}
/// <summary>
/// 复制源要素类的表结构，创建一个空的要素类
/// </summary>
/// <param name="sourceClass">源要素类</param>
/// <param name="targetObject">IWorkspace、IFeatureWorkspace或IFeatureDataset对象，在该对象中创建新要素类</param>
/// <param name="name">新要素类名称</param>
/// <param name="geoType">要素类的几何类型</param>
/// <param name="aliasName">新要素类别名，值为null则别名与名字相同</param>
/// <returns></returns>
public static IFeatureClass CopyStruct(this IFeatureClass sourceClass, object targetObject, string name, esriGeometryType geoType, string aliasName = null)
{
var spatialRef = sourceClass.GetSpatialRef();
var feilds = sourceClass.CloneFeatureClassFieldsSimple();
var featureClass = Create(targetObject, name, spatialRef, geoType, feilds);
if (!String.IsNullOrEmpty(aliasName))
{
featureClass.RenameFeatureClassAliasName(aliasName);
}
return(featureClass);
}
/// <summary>
/// 复制源要素类的表结构，创建一个空的要素类
/// </summary>
/// <param name="sourceClass">源要素类</param>
/// <param name="targetFullPath">新要素类的保存路径</param>
/// <param name="geoType">要素类的几何类型</param>
/// <param name="aliasName">新要素类别名，值为null则别名与名字相同</param>
/// <returns></returns>
public static IFeatureClass CopyStruct(this IFeatureClass sourceClass, string targetFullPath, esriGeometryType geoType, string aliasName = null)
{
var spatialRef = sourceClass.GetSpatialRef();
var feilds = sourceClass.CloneFeatureClassFieldsSimple();
var shapeField = FieldOpt.CreateShapeField(geoType, spatialRef);
((IFieldsEdit)feilds).AddField(shapeField);
var featureClass = FeatureClassEx.CreateToPath(targetFullPath, feilds);
if (!String.IsNullOrEmpty(aliasName))
{
featureClass.RenameFeatureClassAliasName(aliasName);
}
return(featureClass);
}
