From aeb569d1cb8ea2ac7a8411119db28a11b0a0e00f Mon Sep 17 00:00:00 2001
From: dd <822360096@qq.com>
Date: Sun, 13 Mar 2022 15:04:52 +0800
Subject: [PATCH] =?UTF-8?q?=E6=96=B0=E5=A2=9EMiniExcelDynamic=E7=B1=BB?=
 =?UTF-8?q?=EF=BC=8C=E5=AF=B9=E5=A4=9Asheet=E9=81=8D=E5=8E=86=E6=8F=90?=
 =?UTF-8?q?=E9=80=9F?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 src/MiniExcel/MiniExcelDynamic.cs | 111 ++++++++++++++++++++++++++++++
 1 file changed, 111 insertions(+)
 create mode 100644 src/MiniExcel/MiniExcelDynamic.cs

diff --git a/src/MiniExcel/MiniExcelDynamic.cs b/src/MiniExcel/MiniExcelDynamic.cs
new file mode 100644
index 0000000..0162c00
--- /dev/null
+++ b/src/MiniExcel/MiniExcelDynamic.cs
@@ -0,0 +1,111 @@
+using MiniExcelLibs.OpenXml;
+using MiniExcelLibs.Utils;
+using MiniExcelLibs.Zip;
+using System;
+using System.Collections.Generic;
+using System.Data;
+using System.IO;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace MiniExcelLibs
+{
+    public class MiniExcelDynamic
+    {
+        FileStream stream;
+        ExcelOpenXmlZip archive;
+        ExcelOpenXmlSheetReader excelOpenXmlSheetReader;
+        public delegate void MyDelegate(string str);//用于输出异常信息
+        public MyDelegate ShowMsgHandler;
+
+        public bool Open(string path, IConfiguration configuration = null)
+        {
+            bool result = false;
+            if(!File.Exists(path))return result;
+            try
+            {
+                stream = File.Open(path, FileMode.Open, FileAccess.Read, FileShare.ReadWrite);
+                archive = new ExcelOpenXmlZip(stream);
+                if (ExcelTypeHelper.GetExcelType(stream, ExcelType.UNKNOWN) != ExcelType.XLSX) return false;
+                excelOpenXmlSheetReader = new ExcelOpenXmlSheetReader(stream, configuration);
+                result = true;
+            }
+            catch(Exception ex)
+            {
+                result = false;
+                showMsg(ex.Message);
+            }
+            return result;
+        }
+
+        public void Close()
+        {
+            stream?.Close();
+            archive?.Dispose();
+            //excelOpenXmlSheetReader?.Dispose();
+        }
+
+        public IEnumerable<T> Query<T>(string sheetName = null, string startCell = "A1") where T : class, new()
+        {
+            return excelOpenXmlSheetReader.Query<T>(sheetName, startCell);
+        }
+        public IEnumerable<dynamic> Query(bool useHeaderRow = false, string sheetName = null, string startCell = "A1")
+        {
+            return excelOpenXmlSheetReader.Query(useHeaderRow, sheetName, startCell);
+        }
+        public DataTable QueryAsDataTable(bool useHeaderRow = true, string sheetName = null, string startCell = "A1")
+        {
+            if (sheetName == null) /*Issue #279*/
+                sheetName = stream.GetSheetNames().First();
+
+            var dt = new DataTable(sheetName);
+            var first = true;
+            var rows = excelOpenXmlSheetReader.Query(useHeaderRow, sheetName, startCell);
+
+            var keys = new List<string>();
+            foreach (IDictionary<string, object> row in rows)
+            {
+                if (first)
+                {
+                    foreach (var key in row.Keys)
+                    {
+                        if (!string.IsNullOrEmpty(key)) // avoid #298 : Column '' does not belong to table
+                        {
+                            var column = new DataColumn(key, typeof(object)) { Caption = key };
+                            dt.Columns.Add(column);
+                            keys.Add(key);
+                        }
+                    }
+
+                    dt.BeginLoadData();
+                    first = false;
+                }
+
+                var newRow = dt.NewRow();
+                foreach (var key in keys)
+                {
+                    newRow[key] = row[key]; //TODO: optimize not using string key
+                }
+
+                dt.Rows.Add(newRow);
+            }
+
+            dt.EndLoadData();
+            return dt;
+        }
+        public List<string> GetSheetNames()
+        {
+            List<string> sheetNames=new List<string>();
+            if (stream == null)return sheetNames;
+            sheetNames = excelOpenXmlSheetReader.GetWorkbookRels(archive.entries).Select(s => s.Name).ToList();
+            
+            return sheetNames;
+        }
+
+        private void showMsg(string msg)
+        {
+            if(ShowMsgHandler!=null) ShowMsgHandler(msg);
+        }
+    }
+}
-- 
Gitee