一、需求描述：EXCEL原有的重複項識別功能，在識別身份證號碼上存在識別錯誤。非重複項也識別爲重複項。
二、編寫Excel VSTO外接程序
1．創建新項目-Excel VSTO 外接程序，項目名：Dedupe
2.右鍵項目-添加-新建項-Office/SharePoint-功能區-添加
3.添加功能按鈕
4編寫功能代碼：
using Microsoft.Office.Tools.Ribbon; using System; using System.Collections.Generic; using System.Drawing; using System.Linq; using System.Text.RegularExpressions; using System.Windows.Forms; using Excel = Microsoft.Office.Interop.Excel; namespace Dedupe { public partial class Ribbon1 { public static Excel.Application App => Globals.ThisAddIn.Application; public static Excel.Workbook Workbook => App.ActiveWorkbook; public static Excel.Worksheet Worksheet => Workbook.ActiveSheet; public static Excel.Range SelectRange => Worksheet.Application.Selection as Excel.Range; private void Ribbon1_Load(object sender, RibbonUIEventArgs e) { } private void button1_Click(object sender, RibbonControlEventArgs e) { var range = SelectRange; if (range != null && range.Count > 1) { if (range.Count>1000000) { MessageBox.Show("選中單元格數量過大，請分批處理") ; return; } object[,] o = range.SpecialCells(Excel.XlCellType.xlCellTypeVisible).get_Value(); List<string> listAll = new List<string>(); List<string> listRepeat = new List<string>(); foreach (var cell in o) { if (cell != null) { listAll.Add(cell.ToString().Trim()); } } foreach (var cell in o) { if (cell != null) { List<string> list = listAll.Where(q => q == cell.ToString().Trim()).ToList(); if (list != null && list.Count > 1) { if (!listRepeat.Contains(cell.ToString().Trim())) { listRepeat.Add(cell.ToString()); } } } } //標記重複數據 if (listRepeat != null && listRepeat.Count > 0) { foreach (var item in listRepeat) { foreach (Excel.Range cell in range.SpecialCells(Excel.XlCellType.xlCellTypeVisible)) { int i = cell.Row; int j = cell.Column; if (cell.Value != null && (Convert.ToString(cell.Value)).Trim() == item) { cell.Interior.Color = ColorTranslator.ToOle(Color.OrangeRed); } } } } } else { MessageBox.Show("請選擇一個以上的單元格"); return; } } private void button2_Click(object sender, RibbonControlEventArgs e) { var range = SelectRange; object[,] o = range.SpecialCells(Excel.XlCellType.xlCellTypeVisible).get_Value(); if (o != null) { foreach (Excel.Range cell in range.SpecialCells(Excel.XlCellType.xlCellTypeVisible)) { cell.Interior.ColorIndex = 0; } } else { MessageBox.Show("請選擇一個或以上的單元格"); return; } } private void button3_Click(object sender, RibbonControlEventArgs e) { var range = SelectRange; if (range != null && range.Count > 0) { object[,] o = range.SpecialCells(Excel.XlCellType.xlCellTypeVisible).get_Value(); if (o != null) { List<string> listAll = new List<string>(); List<string> listError = new List<string>(); foreach (var cell in o) { if (cell != null) { listAll.Add(cell.ToString().Trim()); } } foreach (var cell in listAll) { if (!listError.Contains(cell)) { if (!Regex.Match(cell, "^[1-9]\\d{5}[1-9]\\d{3}((0\\d)|(1[0-2]))(([0|1|2]\\d)|3[0-1])\\d{4}$").Success) { listError.Add(cell); } } } //標記錯誤數據 if (listError != null && listError.Count > 0) { foreach (var item in listError) { foreach (Excel.Range cell in range.SpecialCells(Excel.XlCellType.xlCellTypeVisible)) { int i = cell.Row; int j = cell.Column; if (cell.Value != null && (Convert.ToString(cell.Value)).Trim() == item) { cell.Interior.Color = ColorTranslator.ToOle(Color.Yellow); } } } } } else { MessageBox.Show("請選擇一個或以上的單元格"); } } else { MessageBox.Show("請選擇一個或以上的單元格"); } } } }
4.右鍵項目發佈（F5可以直接調試）
5.安裝setup.exe
6.打開EXCEL，先打開EXCEL功能，勾選確認：文件-選項-自定義功能區-開發工具/加載項
7.加載項查看功能
8.開發工具裏面卸載
三、實際效果
