轉(zhuǎn)載自：http://blog.sina.com.cn/s/blog_84f7fbbb010199gx.html

從ACCESS讀取數(shù)據(jù)到ArcGIS個人數(shù)據(jù)庫并創(chuàng)建Feature Class(point)

轉(zhuǎn)載：http://www.cnblogs.com/qiushuixizhao/p/3242685.html

如何創(chuàng)建一個要素數(shù)據(jù)類 IField，IFieldEdit，IFields，IFieldsEditI，GeometryDef，IGeometryDefEdit接口

如何創(chuàng)建一個要素數(shù)據(jù)類?
創(chuàng)建要素類用到了IFeatureWorkspace.CreateFeatureClass方法，在這個方法中有眾多的參數(shù)，為了滿足這些參數(shù)，我們要學(xué)習(xí)和了解下面的接口.?
IField，IFieldEdit，IFields，IFieldsEditI，GeometryDef，IGeometryDefEdit接口?
字段對應(yīng)表中的一列，一個要素類必須有至少2個字段，而多個字段的集合就構(gòu)成了字段集，在要素類中，有一個特殊的字段，描述了空間對象，我們稱之為幾何字段，其中GeometryDef是用來設(shè)計幾何字段的。這個幾何字段定義了要素類的類型,比如說我們要在Catalog創(chuàng)建一個點要素類，那么我們必須指定他的類型為Point。

而上面這6個接口，其實是三類，以Edit結(jié)尾的接口是可寫的，也就是說對字段，字段集合，以及幾何字段的編輯都是通過后者完成的。空間數(shù)據(jù)的一個重要屬性就是參考系，參考系也是在GeometryDef中定義的。?
注意 在NET中，會遇到以“_2”結(jié)尾的屬性，這些屬性是可寫的。

IGeometryDefEdit Interface接口

Members

?? All ? Properties ? Methods ? Inherited ? Non-inherited ?Description

?	AvgNumPoints	The estimated average number of points per feature.
?	AvgNumPoints	The estimated average number of points per feature.
?	GeometryType	The enumerated geometry type.
?	GeometryType	The geometry type.
?	GridCount	The number of spatial index grids.
?	GridCount	The number of spatial index grids.
?	GridSize	The size of a spatial index grid.
?	GridSize	The size of a spatial index grid.
?	HasM	Indicates if the feature class has measure (M) values.
?	HasM	Indicates if the feature class will support M values.
?	HasZ	Indicates if the feature class will support Z values.
?	HasZ	Indicates if the featureClass has Z values.
?	SpatialReference	The spatial reference for the dataset.
?	SpatialReference	The spatial reference of the dataset.

?

?

//定義一個幾何字段，類型為點類型 ISpatialReference pSpatialReference = axMapControl1.ActiveView.FocusMap.SpatialReference; //空間參考系IGeometryDefEdit pGeoDef = new GeometryDefClass(); IGeometryDefEdit pGeoDefEdit = pGeoDef as IGeometryDefEdit; pGeoDefEdit.GeometryType_2 = esriGeometryType.esriGeometryPoint; pGeoDefEdit.SpatialReference_2 = pSpatialReference; //定義一個字段集合對象 IFields pFields = new FieldsClass(); IFieldsEdit pFieldsEdit = (IFieldsEdit)pFields; //定義單個的字段 IField pField = new FieldClass(); IFieldEdit pFieldEdit = (IFieldEdit)pField; pFieldEdit.Name_2 = "SHAPE"; pFieldEdit.Type_2 = esriFieldType.esriFieldTypeGeometry; pFieldsEdit.AddField(pField); pFieldEdit.GeometryDef_2 = pGeoDef; //定義單個的字段，并添加到字段集合中 pField = new FieldClass(); pFieldEdit = (IFieldEdit)pField; pFieldEdit.Name_2 = "STCD"; pFieldEdit.Type_2 = esriFieldType.esriFieldTypeString; pFieldsEdit.AddField(pField); //定義單個的字段，并添加到字段集合中 pField = new FieldClass(); pFieldEdit = (IFieldEdit)pField; pFieldEdit.Name_2 = "SLM10"; pFieldEdit.Type_2 = esriFieldType.esriFieldTypeString; pFieldsEdit.AddField(pField); //定義單個的字段，并添加到字段集合中 pField = new FieldClass(); pFieldEdit = (IFieldEdit)pField; pFieldEdit.Name_2 = "SLM20"; pFieldEdit.Type_2 = esriFieldType.esriFieldTypeString; pFieldsEdit.AddField(pField); //定義單個的字段，并添加到字段集合中 pField = new FieldClass(); pFieldEdit = (IFieldEdit)pField; pFieldEdit.Name_2 = "SLM40"; pFieldEdit.Type_2 = esriFieldType.esriFieldTypeString; pFieldsEdit.AddField(pField); IWorkspaceFactory pFtWsFct = new AccessWorkspaceFactory(); IFeatureWorkspace pWs = pFtWsFct.OpenFromFile(@"E:\arcgis\Engine\s.mdb", 0) as IFeatureWorkspace; IFeatureClass pFtClass = pWs.CreateFeatureClass("Test", pFields, null, null, esriFeatureType.esriFTSimple, "SHAPE", null)

?創(chuàng)建字段

方法一：IQueryFilter接口

Description
IQueryFilterfilters data based on an attribute query. A string defining a where clause is required. An optional list of columns may be included to specify the column values to be retrieved. If no columns are specified, all values will be returned.

When To Use
When you need to filter data based on attribute values or the relationships between attributes.

Members

?

Method　　 　　　　　　AddField 　　　　　　　　　Appends a single field name to the list of sub-fields.
Read/write property 　　OutputSpatialReference 　　 ?The spatial reference in which to output geometry for a given field.
Read/write property 　　SubFields 　　　　　　　　　The comma delimited list of field names for the filter.
Read/write property 　　WhereClause 　　　　　　　The where clause for the filter.

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轉(zhuǎn)載于:https://www.cnblogs.com/marvelousone/p/7457436.html

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