今天預實現(xiàn)一功能，將txt中的數(shù)據(jù)轉(zhuǎn)到excel表中，做為matlab的數(shù)據(jù)源。搜集一些c#操作excel的程序。步驟如下：
下載一個Microsoft.Office.Interop.Excel.dll 在項目中引用。
編寫代碼如下：
string path = "c://date//xyu.txt"; StreamReader sr = new StreamReader(path); string strLine = sr.ReadLine(); int rowNum = 1; object missing = System.Reflection.Missing.Value; ApplicationClass app = new ApplicationClass(); app.Application.Workbooks.Add(true); Workbook book = (Workbook)app.ActiveWorkbook; Worksheet sheet = (Worksheet)book.ActiveSheet; while (!string.IsNullOrEmpty(strLine)) { string[] tempArr; tempArr = strLine.Split(','); for (int k = 1; k <= tempArr.Length; k++) { sheet.Cells[rowNum, k] = tempArr[k - 1]; } strLine = sr.ReadLine(); rowNum++; } //保存excel文件 book.SaveCopyAs("D://source.xls"); //關(guān)閉文件 book.Close(false, missing, missing); //退出excel app.Quit(); MessageBox.Show("轉(zhuǎn)化成功！");以上代碼可以實現(xiàn)功能，由于txt中的數(shù)據(jù)有60501行，數(shù)據(jù)量太大。我估算了一下，用以上代碼轉(zhuǎn)到excel要用大約2-3分鐘。我一共要轉(zhuǎn)9個txt。一共要用20多分鐘。這樣作出系統(tǒng)顯然是讓人難以忍受的。接著找資料，發(fā)現(xiàn)用rang方法可以提高速率。只用大約3-4秒鐘的時間，提高效率幾十倍。代碼如下：
string path = "c://date//xyu.txt"; StreamReader sr = new StreamReader(path); string strLine = sr.ReadLine(); int rowNum = 1; object missing = System.Reflection.Missing.Value; ApplicationClass app = new ApplicationClass(); app.Application.Workbooks.Add(true); Workbook book = (Workbook)app.ActiveWorkbook; Worksheet sheet = (Worksheet)book.ActiveSheet; Range r = sheet.get_Range("A1", "C1"); //獲取行數(shù) object[,] objectData = new object[65535, 3]; while (!string.IsNullOrEmpty(strLine)) { string[] tempArr; tempArr = strLine.Split(','); for (int k = 1; k <= tempArr.Length; k++) { objectData[rowNum-1, k-1] = tempArr[k - 1]; } strLine = sr.ReadLine(); rowNum++; } r = r.get_Resize(65535, 3); r.Value2 = objectData; r.EntireColumn.AutoFit(); //保存excel文件 book.SaveCopyAs("D://source.xls"); //關(guān)閉文件 book.Close(false, missing, missing); //退出excel app.Quit(); MessageBox.Show("轉(zhuǎn)化成功！");新聞熱點
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