DatasetGrid data = m_workspace.Datasources[0].Datasets["DEM25"] as DatasetGrid;
            ExportSetting setting = new ExportSetting();
            setting.TargetFilePath = @"E:\aaaa.asc";
            setting.SourceData = data;
            setting.TargetFileType = FileType.GRD;
            DataExport dataexport = new DataExport();
            dataexport.ExportSettings.Add(setting);
            ExportResult result = dataexport.Run();
代码的话如上,但是需要保证你这个数据是能正常导出的,如果在idesktop中就不能导出的话,那有组价也同样不能导出,你可以将你的数据发出来看一下,上传百度网盘发出来,如果数据不方便公开,可以将链接私信我