今天在单位做图层合并的工作,刚开始找不到相应的接口,现在解决了,放出来与大家共享
本程序实现了对具有同类型数据结构的shapefile的图层合并,并在MapControl中显示.
ILayer pLayer;
IFeatureLayer pFeatureLayer;
IFeatureClass pFeatureClass;
IWorkspaceName pNewWSName;
IBasicGeoprocessor pBasicGeop;
IFeatureClassName pFeatureClassName;
IDatasetName pDatasetName;
IFeatureClass pOutputFeatClass;
IFeatureLayer pOutputFeatLayer;
IArray pArray;
ITable pTable;
//合并图层的集合
pArray = new ArrayClass();
for (int i = 0; i < this.axMapcontrol1.LayerCount;i++ )
{
pLayer = this.MapC_main.get_Layer(i);
pArray.Add(pLayer);
}
//定义输出图层的fields表
pLayer = this.MapC_main.get_Layer(0);
pTable = (ITable)pLayer;
pFeatureLayer=(IFeatureLayer)pLayer;
pFeatureClass = pFeatureLayer.FeatureClass;
//判断图层是否大于2个
if(this..axMapcontrol1.LayerCount< 2){
MessageBox.Show("Table QI failed");
return;
//输出文件类型
pFeatureClassName = new FeatureClassNameClass();
pFeatureClassName.FeatureType = esriFeatureType.esriFTSimple;
pFeatureClassName.ShapeFieldName = "Shape";
pFeatureClassName.ShapeType = pFeatureClass.ShapeType;
//输出shapefile的名称和位置
pNewWSName = new WorkspaceNameClass();
pNewWSName.WorkspaceFactoryProgID="esriDataSourcesFile.ShapefileWorkspaceFactory";
pNewWSName.PathName = "E:\\Cshape";
pDatasetName = (IDatasetName)pFeatureClassName;
pDatasetName.Name = "Union_result_1";
pDatasetName.WorkspaceName = pNewWSName;
//合并图层
pBasicGeop = new BasicGeoprocessorClass();
pOutputFeatClass=pBasicGeop.Merge(pArray,pTable,pFeatureClassName);
//Add the output layer to the map
pOutputFeatLayer = new FeatureLayerClass();
pOutputFeatLayer.FeatureClass = pOutputFeatClass;
pOutputFeatLayer.Name = pOutputFeatClass.AliasName;
this..axMapcontrol1.AddLayer(pOutputFeatLayer as ILayer, 0);
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作 者：温景良
<a href="http://home.cnblogs.com/u/wenjl520/">温景良(Jason)</a>
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我试验了为什么总是在pOutputFeatClass=pBasicGeop.Merge(pArray,pTable,pFeatureClassName);句的时候报错呢？是不是还要有pNewWSName.ConnectionProperties的设置啊? 我主要是想注记层和点层或者线层进行合并
看你的文章真是种享受！篇篇短小精悍！太喜欢了！
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