ArcGIS Engine获取栅格数据属性值

ArcGIS Engine提供获取栅格数据的接口，要获取栅格数据，首先要将IRaster转为IRaster2，然后获取IRatster2的属性表ITable，最后从ITable中获取值字段。

获取栅格数据

            ILayer pLayer = axMapControl1.get_Layer(0);
            IRasterLayer pRasterLayer = pLayer as IRasterLayer;

转为IRaster2

IRaster2 pRaster = (IRaster2)pRasterLayer.Raster;

读取属性表

ITable table = pRaster.AttributeTable;

纯栅格数据可能没有属性表，即为null,因此应首先判断table是否为null，再进行下一步操作。

获得属性值

            string attr = "";
            for (int i = 0; i < table.Fields.FieldCount; i++)
            {
                attr += table.Fields.Field[i].Name;
            }

全部代码(函数)：

        private void 读取栅格属性表ToolStripMenuItem_Click(object sender, EventArgs e)
        {
            ILayer pLayer = axMapControl1.get_Layer(0);
            IRasterLayer pRasterLayer = pLayer as IRasterLayer;
            IRaster2 pRaster = (IRaster2)pRasterLayer.Raster;
            ITable table = pRaster.AttributeTable;
            if (table == null)
            {
                MessageBox.Show("无属性值");
                return;
            }

            string attr = "";
            for (int i = 0; i < table.Fields.FieldCount; i++)
            {
                attr += table.Fields.Field[i].Name;
            }
            MessageBox.Show(attr);
        }

转载自：https://blog.csdn.net/ScapeD/article/details/82877667