private void button1_Click(object sender, EventArgs e) { if (mLayerCombox.Text == "" || mFeildCombox.Text == "")//判断输入合法性 { MessageBox.Show("没有相应的图层"); return; } ITinEdit pTin = new TinClass(); //寻找Featurelayer IFeatureLayer pFeatureLayer = mSceneControl.Scene.get_Layer(mLayerCombox.SelectedIndex) as IFeatureLayer; if (pFeatureLayer != null) { IEnvelope pEnvelope = new EnvelopeClass(); IFeatureClass pFeatureClass = pFeatureLayer.FeatureClass; IQueryFilter pQueryFilter = new QueryFilterClass(); IField pField = null; //找字段 pField = pFeatureClass.Fields.get_Field(pFeatureClass.Fields.FindField(mFeildCombox.Text)); if (pField.Type == esriFieldType.esriFieldTypeInteger || pField.Type == esriFieldType.esriFieldTypeDouble || pField.Type == esriFieldType.esriFieldTypeSingle) //判断类型 { IGeoDataset pGeoDataset = pFeatureLayer as IGeoDataset; pEnvelope = pGeoDataset.Extent; //设置空间参考系 ISpatialReference pSpatialReference; pSpatialReference = pGeoDataset.SpatialReference; //选择生成TIN的输入类型 esriTinSurfaceType pSurfaceTypeCount = esriTinSurfaceType.esriTinMassPoint; switch (mTINType.Text) { case "点": pSurfaceTypeCount = esriTinSurfaceType.esriTinMassPoint; break; case "直线": pSurfaceTypeCount = esriTinSurfaceType.esriTinSoftLine; break; case "光滑线": pSurfaceTypeCount = esriTinSurfaceType.esriTinHardLine; break; } //创建TIN pTin.InitNew(pEnvelope); object missing = Type.Missing; //生成TIN pTin.AddFromFeatureClass(pFeatureClass, pQueryFilter, pField, pField, pSurfaceTypeCount, ref missing); pTin.SetSpatialReference(pGeoDataset.SpatialReference); //创建Tin图层并将Tin图层加入到场景中去 ITinLayer pTinLayer = new TinLayerClass(); pTinLayer.Dataset = pTin as ITin; mSceneControl.Scene.AddLayer(pTinLayer, true); } else { MessageBox.Show("该字段的类型不符合构建TIN的条件"); } } }