c#操作excel方式三:使用Microsoft.Office.Interop.Excel.dll讀取Excel檔案
阿新 • • 發佈：2019-02-17
1、引用Microsoft.Office.Interop.Excel.dll
2、引用名稱空間、使用別名
using System.Reflection;
using Excel = Microsoft.Office.Interop.Excel;
3.寫入excel
寫入函式
public void ToExcel(string strTitle) { int nMax = 9; int nMin = 4; int rowCount = nMax - nMin + 1;//總行數 const int columnCount = 4;//總列數 //建立Excel物件 Excel.Application excelApp = new Excel.ApplicationClass(); //新建工作簿 Excel.Workbook workBook = excelApp.Workbooks.Add(true); //新建工作表 Excel.Worksheet worksheet = workBook.ActiveSheet as Excel.Worksheet; ////設定標題 //Excel.Range titleRange = worksheet.get_Range(worksheet.Cells[1, 1], worksheet.Cells[1, columnCount]);//選取單元格 //titleRange.Merge(true);//合併單元格 //titleRange.Value2 = strTitle; //設定單元格內文字 //titleRange.Font.Name = "宋體";//設定字型 //titleRange.Font.Size = 18;//字型大小 //titleRange.Font.Bold = false;//加粗顯示 //titleRange.HorizontalAlignment = Excel.XlHAlign.xlHAlignCenter;//水平居中 //titleRange.VerticalAlignment = Excel.XlVAlign.xlVAlignCenter;//垂直居中 //titleRange.Borders.LineStyle = Excel.XlLineStyle.xlContinuous;//設定邊框 //titleRange.Borders.Weight = Excel.XlBorderWeight.xlThin;//邊框常規粗細 //設定表頭 string[] strHead = new string[columnCount] { "序號", "範圍", "分組1", "分組2" }; int[] columnWidth = new int[4] { 8, 16, 8, 10 }; for (int i = 0; i < columnCount; i++) { //Excel.Range headRange = worksheet.Cells[2, i + 1] as Excel.Range;//獲取表頭單元格 Excel.Range headRange = worksheet.Cells[1, i + 1] as Excel.Range;//獲取表頭單元格,不用標題則從1開始 headRange.Value2 = strHead[i];//設定單元格文字 headRange.Font.Name = "宋體";//設定字型 headRange.Font.Size = 12;//字型大小 headRange.Font.Bold = false;//加粗顯示 headRange.HorizontalAlignment = Excel.XlHAlign.xlHAlignCenter;//水平居中 headRange.VerticalAlignment = Excel.XlVAlign.xlVAlignCenter;//垂直居中 headRange.ColumnWidth = columnWidth[i];//設定列寬 // headRange.Borders.LineStyle = Excel.XlLineStyle.xlContinuous;//設定邊框 // headRange.Borders.Weight = Excel.XlBorderWeight.xlThin;//邊框常規粗細 } //設定每列格式 for (int i = 0; i < columnCount; i++) { //Excel.Range contentRange = worksheet.get_Range(worksheet.Cells[3, i + 1], worksheet.Cells[rowCount - 1 + 3, i + 1]); Excel.Range contentRange = worksheet.get_Range(worksheet.Cells[2, i + 1], worksheet.Cells[rowCount - 1 + 3, i + 1]);//不用標題則從第二行開始 contentRange.HorizontalAlignment = Excel.XlHAlign.xlHAlignCenter;//水平居中 contentRange.VerticalAlignment = Excel.XlVAlign.xlVAlignCenter;//垂直居中 //contentRange.Borders.LineStyle = Excel.XlLineStyle.xlContinuous;//設定邊框 // contentRange.Borders.Weight = Excel.XlBorderWeight.xlThin;//邊框常規粗細 contentRange.WrapText = true;//自動換行 contentRange.NumberFormatLocal = "@";//文字格式 } //填充資料 for (int i = nMin; i <= nMax; i++) { int k = i - nMin; //excelApp.Cells[k + 3, 1] = string.Format("{0}", k + 1); //excelApp.Cells[k + 3, 2] = string.Format("{0}-{1}", i - 0.5, i + 0.5); //excelApp.Cells[k + 3, 3] = string.Format("{0}", k + 3); //excelApp.Cells[k + 3, 4] = string.Format("{0}", k + 4); excelApp.Cells[k + 2, 1] = string.Format("{0}", k + 1); excelApp.Cells[k + 2, 2] = string.Format("{0}-{1}", i - 0.5, i + 0.5); excelApp.Cells[k + 2, 3] = string.Format("{0}", k + 3); excelApp.Cells[k + 2, 4] = string.Format("{0}", k + 4); } //設定Excel可見 excelApp.Visible = true; }
寫入按鈕函式:
private void button1_Click(object sender, EventArgs e)
{
ToExcel("方式3");
}結果:
4.讀取excel
新增一個opendiog用於選擇要讀取的excel
名稱空間
using System.Diagnostics;讀取函式:
private void OpenExcel(string strFileName) { object missing = System.Reflection.Missing.Value; Excel.Application excel = new Excel.ApplicationClass();//lauch excel application if (excel == null) { this.label1.Text="Can't access excel"; } else { excel.Visible = false; excel.UserControl = true; // 以只讀的形式開啟EXCEL檔案 Excel.Workbook wb = excel.Application.Workbooks.Open(strFileName, missing, true, missing, missing, missing, missing, missing, missing, true, missing, missing, missing, missing, missing); //取得第一個工作薄 Excel.Worksheet ws = (Excel.Worksheet)wb.Worksheets.get_Item(1); //取得總記錄行數 (包括標題列) int rowsint = ws.UsedRange.Cells.Rows.Count; //得到行數 //int columnsint = mySheet.UsedRange.Cells.Columns.Count;//得到列數 //取得資料範圍區域 (不包括標題列) Excel.Range rng1 = ws.Cells.get_Range("A2", "A" + rowsint); Excel.Range rng2 = ws.Cells.get_Range("B2", "B" + rowsint); Excel.Range rng3 = ws.Cells.get_Range("C2", "C" + rowsint); Excel.Range rng4 = ws.Cells.get_Range("D2", "D" + rowsint); object[,] arry1 = (object[,])rng1.Value2; //get range's value object[,] arry2 = (object[,])rng2.Value2; object[,] arry3 = (object[,])rng3.Value2; //get range's value object[,] arry4 = (object[,])rng4.Value2; //將新值賦給一個數組 string[,] arry = new string[rowsint - 1, 4]; //for (int i = 1; i <= rowsint - 1; i++) for (int i = 1; i <= rowsint - 2; i++) { arry[i - 1, 0] = arry1[i, 1].ToString(); arry[i - 1, 1] = arry2[i, 1].ToString(); arry[i - 1, 2] = arry3[i, 1].ToString(); arry[i - 1, 3] = arry4[i, 1].ToString(); } string a = ""; for (int i = 0; i <= rowsint - 3; i++) { a += arry[i, 0] + "|" + arry[i, 1] + "|" + arry[i, 2] + "|" + arry[i, 3]+"\n"; } this.label1.Text=a; } excel.Quit(); excel = null; Process[] procs = Process.GetProcessesByName("excel"); foreach (Process pro in procs) { pro.Kill();//沒有更好的方法,只有殺掉程序 } GC.Collect(); }
讀取按鈕程式碼:
private void button1_Click(object sender, EventArgs e)
{
if (openFileDialog.ShowDialog() == DialogResult.OK)
{
OpenExcel(openFileDialog.FileName);
}
}結果;
