Initial_commit_SecMPS_v2

api_sqlsugar/VolPro.Core/Generic/GenericExcelTemplateHelper.cs

@@ -0,0 +1,71 @@
+using OfficeOpenXml;
+using OfficeOpenXml.FormulaParsing.Excel.Functions.Math;
+using OfficeOpenXml.Style;
+using System;
+using System.Collections.Generic;
+using System.Drawing;
+using System.Linq;
+using System.Runtime.InteropServices;
+using VolPro.Core.UserManager;
+using VolPro.Core.Utilities;
+
+namespace VolPro.Core.Generic
+{
+    /// <summary>
+    /// 通用导入模板 Excel 生成辅助类（基于 TableColumnField 元数据）
+    /// </summary>
+    internal static class GenericExcelTemplateHelper
+    {
+        /// <summary>
+        /// 根据表配置生成导入模板 Excel 的二进制内容
+        /// </summary>
+        /// <param name="tableDisplayName">表中文名/标题</param>
+        /// <param name="columns">表字段配置</param>
+        /// <returns>Excel 文件字节数组</returns>
+        public static byte[] BuildTemplateBytes(string tableDisplayName, List<TableColumnField> columns)
+        {
+            if (columns == null || columns.Count == 0)
+            {
+                return [];
+            }
+            //仅导出实际表字段
+            var exportColumns = columns
+                .Where(c => c.IsDisplay == 1 && c.ReferenceField == 0)
+                .ToList();
+
+            if (exportColumns.Count == 0)
+            {
+                return [];
+            }
+            using var package = new ExcelPackage();
+
+            string sheetName = string.IsNullOrWhiteSpace(tableDisplayName)
+                ? (exportColumns.First().TableName ?? "sheet1")
+                : tableDisplayName;
+
+            var worksheet = package.Workbook.Worksheets.Add(sheetName);
+
+            int colIndex = 1;
+            foreach (var col in exportColumns)
+            {
+                worksheet.Cells[1, colIndex].Style.Fill.PatternType = ExcelFillStyle.Solid;
+                worksheet.Cells[1, colIndex].Style.Fill.BackgroundColor.SetColor(col.IsNull == 0 ? Color.Red : Color.White);
+                string columnName = col.ColumnName;
+                worksheet.Cells[1, colIndex].Value = string.IsNullOrWhiteSpace(col.ColumnCnName)
+                    ? columnName
+                    : col.ColumnCnName.Translator();
+                colIndex++;
+            }
+            if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
+            {
+                // 自动列宽
+                if (worksheet.Dimension != null)
+                {
+                    worksheet.Cells[worksheet.Dimension.Address].AutoFitColumns();
+                }
+            }
+            return package.GetAsByteArray();
+        }
+    }
+}
+