/// <summary>
/// 在内存中创建要素类
/// </summary>
/// <returns></returns>
public IFeatureClass MemoryFeatureClass()
{
AccessGeoData accData = new AccessGeoData();
IFeatureWorkspace pFeaWorkspace = accData.FeatureWorkspace();
IFields fields = new FieldsClass();
IFieldsEdit fedits = (IFieldsEdit)fields;
IField objfield = new FieldClass();
IFieldEdit objEdit = (IFieldEdit)objfield;
objEdit.Name_2 = "OBJECTID";
objEdit.Type_2 = esriFieldType.esriFieldTypeOID;
fedits.AddField(objEdit);
IField Spfield = new FieldClass();
IFieldEdit fEdit = (IFieldEdit)Spfield;
IGeometryDef pGeoDef = new GeometryDefClass();
IGeometryDefEdit pGeoDefEdit = (IGeometryDefEdit)pGeoDef;
pGeoDefEdit.GeometryType_2 = esriGeometryType.esriGeometryPoint;
pGeoDefEdit.SpatialReference_2 = spatialRef;
fEdit.Name_2 = "Shape";
fEdit.Type_2 = esriFieldType.esriFieldTypeGeometry;
fEdit.GeometryDef_2 = pGeoDef;
fedits.AddField(Spfield);
IField fieldZ = new FieldClass();
IFieldEdit EditZ = (IFieldEdit)fieldZ;
EditZ.Name_2 = "Z";
EditZ.Type_2 = esriFieldType.esriFieldTypeDouble;
fedits.AddField(EditZ);
IFeatureClass pFeaClass = pFeaWorkspace.CreateFeatureClass("FeaturePoints", fields, null, null, esriFeatureType.esriFTSimple, "Shape", "");
return pFeaClass;
}
/// <summary>
/// 在地理数据库中创建要素类
/// </summary>
/// <param name="workspacePath">工作空间路径</param>
/// <param name="feaclassName">所创建要素类名称</param>
/// <param name="GeometeyType">枚举要素类类型: esriGeimetryType(</param>
/// <param name="gcsType">地理空间坐标系类型,格式如: (int)esriSRGeoCS3Type.esriSRGeoCS_Xian1980</param>
/// <returns></returns>
public IFeatureClass CreateFeatureClass(string workspacePath, string feaclassName, esriGeometryType GeometeyType, int gcsType)
{
AccessGeoData accData = new AccessGeoData();
IFeatureWorkspace pFeaWorkspace = accData.OpenFeatureWorkspace(workspacePath);
spatialRef = spatialRefFactory.CreateGeographicCoordinateSystem(gcsType);
//字段编辑：包括ObjectID 与 Shape
IFields fields = new FieldsClass();
IFieldsEdit fedits = (IFieldsEdit)fields;
//构建唯一标识符字段
IField objfield = new FieldClass();
IFieldEdit objEdit = (IFieldEdit)objfield;
objEdit.Name_2 = "OBJECTID";
objEdit.Type_2 = esriFieldType.esriFieldTypeOID;
fedits.AddField(objEdit);
//构建shape
IField Spfield = new FieldClass();
IFieldEdit fEdit = (IFieldEdit)Spfield;
IGeometryDef pGeoDef = new GeometryDefClass();
IGeometryDefEdit pGeoDefEdit = (IGeometryDefEdit)pGeoDef;
pGeoDefEdit.GeometryType_2 = GeometeyType;
pGeoDefEdit.SpatialReference_2 = spatialRef;
fEdit.Name_2 = "Shape";
fEdit.Type_2 = esriFieldType.esriFieldTypeGeometry;
fEdit.GeometryDef_2 = pGeoDef;
fedits.AddField(Spfield);
//附加一个可编辑字段，存放属性值
IField fieldZ = new FieldClass();
IFieldEdit EditZ = (IFieldEdit)fieldZ;
EditZ.Name_2 = "Value";
EditZ.Type_2 = esriFieldType.esriFieldTypeDouble;
fedits.AddField(EditZ);
//若有其他需求，在此处添加字段，参加Value字段添加方式
IFeatureClass pFeaClass = pFeaWorkspace.CreateFeatureClass(feaclassName, fields, null, null, esriFeatureType.esriFTSimple, "Shape", "");
return pFeaClass;
}
public IFeatureClass ReadFeatureClass(string workspacePath, string feaclassName)
{
AccessGeoData accData = new AccessGeoData();
IFeatureWorkspace pFeaWorkspace = accData.OpenFeatureWorkspace(workspacePath);
//若有其他需求，在此处添加字段，参加Value字段添加方式
IFeatureClass pFeaClass = null;
try
{
pFeaClass = pFeaWorkspace.OpenFeatureClass(feaclassName);
}
catch (Exception)
{
//throw;
}
return pFeaClass;
}