Function Syntax: LayersImportExport Version: 1.0 Date: 20.07.2026 07:05:08 Version: 1.0 Date: 19.07.2026 1:38:28PM N/A 🚀 LayersImportExport_016 LayersImportExport_016 is an AutoCAD and Civil 3D 2024 .NET utility for extracting, editing, exporting, importing, previewing, and applying drawing and Xref layer properties. It combines layer export, layer import, live-drawing updates, Xref-layer reset, visual previews, project-folder presets, Undo, and diagnostics in one modeless C# interface. Main Commands 🧰 Run LAYERSIMPORTEXPORT_016 to open the combined dialog on the Extract / Export tab. 📤 Run LAYEREXPORT_016 to open the Extract / Export workflow directly. 📥 Run LAYERIMPORT_016 to open the Load / Import workflow directly. ⚙️ Run LAYERSETTINGS_016 to open the project-folder Settings tab directly. SEO Optimized Description 📐 This AutoCAD layer import and export tool transfers layer standards between drawings and UTF-8 CSV or XML files while supporting property editing, filtering, preview, live Apply, and Undo. 🔍 The utility supports CAD standards management, Civil 3D production, layer audits, drawing cleanup, project template coordination, multi-DWG extraction, Xref layer control, and repeatable layer-state deployment. 🧠 It can read the active drawing or scan a directory of DWG files, process selected layer fields, preview nested block and Xref geometry, create missing layers, update existing layers, and restore Xref-dependent layer properties from the source DWG. 📌 LayersImportExport_016 is useful for CAD technicians, Civil 3D users, BIM and CAD coordinators, survey drafting, utility projects, construction documentation, drawing-standard enforcement, and large project layer administration. Functionalities 🚀 Combined modeless workflow - provides Extract / Export, Load / Import, and Settings tabs in one resizable C# dialog. 📂 Current drawing or DWG directory - extracts layers from the active drawing or scans a selected folder of drawing files. ⏳ Background directory scan - processes multi-DWG extraction with progress, current-file reporting, cancellation, and failed-file summaries. 📄 CSV and XML exchange - exports and imports UTF-8 layer records in CSV or XML format. 🎨 Layer property fields - supports Colour, Linetype, Lineweight, Plot, PlotStyle, On, Frozen, FrozenInVP, Locked, and Description. 🌈 ACI and true colour - round-trips AutoCAD Colour Index values and TC:R,G,B true-colour values. 🧩 Create and update layers - creates missing layers, updates existing layers, or performs both operations according to the Import options. 🔢 Apply progress and totals - reports created, updated, skipped, and failed counts and supports cooperative cancellation. ✏️ Editable layer grids - renames pending rows, changes colour, linetype, and lineweight, and toggles layer states before Export or Apply. ☑️ Multi-row editing - applies colour, linetype, lineweight, and state changes across the complete selected row set. 🔍 Per-column filters - combines case-insensitive text filters or explicit * and ? wildcard patterns for every displayed property. ✅ Apply Export edits to drawing - writes selected edited Export-grid rows back to existing layers in the live drawing after confirmation. ↩️ Layer snapshot Undo - restores the latest Import Apply, Export Apply, or Xref reset operation from a saved layer snapshot. 🧱 Xref layer workflows - includes Xref layers, restricts output to Xrefs, filters by Xref owner, and reads nested Xref content. 🖱️ Pick Xref in drawing - resolves a selected Xref insert, nested entity, or attributed object and isolates its layers for export. 🔄 Reset Xref layers - reads the resolved source DWG and restores locally overridden XRefName|Layer definitions. 🖼️ Interactive GDI+ preview - supports wheel zoom, drag pan, double-click fit, refresh, selected-layer fit, and crash-safe geometry drawing. 🎯 Nested layer preview - recursively samples entities inside blocks and Xrefs and applies accumulated transforms to display their correct world position. 🏙️ Drawing context preview - shows the selected layer in its resolved colour and optionally displays the complete current space as gray context. 🧭 UCS preview control - previews geometry in WCS, the Current UCS, or any named UCS stored in the drawing. 🖥️ Exact AutoCAD rendering - optionally uses the AutoCAD GraphicsSystem for native entity appearance, including linetypes, colours, lineweights, and block content. 🛠️ Build 016 rendering diagnostics - logs GraphicsSystem initialization, rebuild summaries, added and skipped entities, context counts, exception types, and stack information. 📁 Project folder database - manages named Export and Import folders through a persistent, schema-versioned JSON list. ⭐ Default folder selection - highlights and auto-selects separate default Export and Import locations and can match folders from the active DWG name. 🛡️ Corruption-safe settings - backs up an unreadable project-folder database before reseeding defaults and continues to read the legacy format. 📝 Logs and diagnostics - provides a live timestamped log, clipboard copy, saved log files, and a troubleshooting diagnostics ZIP. 🧪 Side-by-side test builds - generates build-numbered DLL and command names so several NETLOADed versions can coexist in one AutoCAD session. Practical Result ✅ The result is a complete AutoCAD layer standards workflow that extracts, filters, edits, previews, exports, imports, applies, resets, and restores layer definitions across active drawings, Xrefs, and directories of DWG files. This makes LayersImportExport_016 useful for Civil 3D production, CAD quality control, project setup, layer audits, drawing exchange, template coordination, and large multi-drawing layer administration. Important Note Apply to drawing, Import Apply, Reset XRef Layers, and Undo directly modify the active drawing's layer table. Review filtered rows, selected fields, create or update settings, Xref choices, and confirmation messages before proceeding. Exact AutoCAD rendering depends on the AutoCAD GraphicsSystem and may be version-sensitive. This package contains source code rather than a compiled plug-in, so build the .NET Framework 4.8 class library with the required AutoCAD or Civil 3D references and NETLOAD the generated DLL.