1、查找數據

1）、利用FeaturCursor進行空間查詢

//利用構造的Envelope（矩形框），查找和Envelope相交的FeatureClass的要素集

//結果數據利用循環FeatureCursor.nextFeature獲得

IEnvelope envelope =?new?EnvelopeClass();

envelope.PutCoords(508786, 681196, 513033, 684341);

//空間查詢

ISpatialFilter spatialFilter =?new?SpatialFilterClass();

spatialFilter.Geometry = envelope;

String shpFld = featureClass.ShapeFieldName;

spatialFilter.GeometryField = shpFld;

spatialFilter.SpatialRel = esriSpatialRelEnum.esriSpatialRelIntersects;//相交

IQueryFilter queryFilter =?new?QueryFilterClass();

queryFilter = (IQueryFilter)spatialFilter;

IFeatureCursor searchCursor = featureClass.Search(queryFilter,?true);

IFeature feature = searchCursor.NextFeature();

int?n = 0;

while?(feature !=?null){

????n++;

????feature = baseCursor.NextFeature();

}

2）、利用FeatureCursor在選擇集中進行查詢

IFeatureSelection pFeatureSelectio = pFeatureLayer as IFeatureSelection;?

ICursor ppCursor;
pFeatureSelectio.SelectionSet.Search(null, false, out ppCursor);

IFeatureCursor pFeatureCursor = ppCursor as IFeatureCursor;?

IFeature pFeature = pFeatureCursor.NextFeature();

3）、利用FeatureCursor進行屬性查詢

IQueryFilter pQueryFilter = new QueryFilterClass();? ? ? ? ? ? ? ? ? ? ? ? ? ?

pQueryFilter.WhereClause = "PROJECTCODE = '" + this.ProjectNumTextBox.Text.Trim() + "'";

IFeatureCursor pFeatureCursor = LineFeaClass.Search(pQueryFilter, false);? ? ? ? ? ? ? ? ? ? ? ? ? ?

IFeature pFeatureIfExit = pFeatureCursor.NextFeature();

?

2、?插入數據

1）、利用Insert Cursors和featureBuffer

IFeatureBuffer featureBuffer = featureClass.CreateFeatureBuffer();IFeatureCursor featureCursor = featureClass.Insert(true);object featureOID;?????? featureBuffer.set_Value(featureBuffer.Fields.FindField("InstBy"), "B Pierce");for (int ic = 0; ic < 99; ic++) {?? featureBuffer.Shape = geometry;? ???featureOID = featureCursor.InsertFeature(featureBuffer);}featureBuffer.set_Value(featureBuffer.Fields.FindField("InstBy"), "K Johnston");for (int ic = 0; ic < 99; ic++){?? featureBuffer.Shape = geometry ?? featureOID = featureCursor.InsertFeature(featureBuffer);}featureCursor.Flush();

2）、直接進行數據插入（Feature.Store方法）

?IFeature newLineFeature = LineFeaClass.CreateFeature();? ? ? ? ? ? ? ? ? ? ? ? ? ?

newLineFeature.Shape = pFeature.Shape;
int ii = newLineFeature.Fields.FindField(AreaZonalName);?

?if (ii > 0)? ? ? ? ? ? ? ? ? ? ? ? ? ?

{? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?

newLineFeature.set_Value(ii, this.AnalysAreaComboBox.Text.Trim());
}

newLineFeature.Store();

3、數據刪除?delete?

IFeatureClass featureClass = featureWorkspace.OpenFeatureClass("Parcels");

IQueryFilter queryFilter =?new?QueryFilterClass();

queryFilter.WhereClause = "ZONING_S = 'R'";

IFeatureCursor updateCursor = featureClass.Update(queryFilter,?false);

IFeature feature = updateCursor.NextFeature();

int?m = 0;

while?(feature !=?null)

{

????m++;

????updateCursor.DeleteFeature(feature);

????feature = updateCursor.NextFeature();

}

4、?數據更新?update?

IFeatureClass featureClass =?featureWorkspace.OpenFeatureClass("Parcels");

// 屬性查詢

IQueryFilter queryFilter =?new?QueryFilterClass();

queryFilter.WhereClause = "ZONING_S = 'U'";

//利用FeatureCursor進行數據更新

IFeatureCursor updateCursor = featureClass.Update(queryFilter,?false);

int?fieldindex = featureClass.FindField("ZONING_S");

IFeature feature = updateCursor.NextFeature();

int?m = 0;

while?(feature !=?null)

{

????m++;

????feature.set_Value(fieldindex, "X");

????updateCursor.UpdateFeature(feature);

????feature = updateCursor.NextFeature();

}

轉載于:https://www.cnblogs.com/suncarry/archive/2011/06/04/2072465.html

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