關于ASP.NET 将資料導出成Excel 的總結[補充]

//打開一個空的Excel

Microsoft.Office.Interop.Excel.Application app = new Microsoft.Office.Interop.Excel.Application();

app.Workbooks.Add(true);

app.Visible = true;

//打開一個已經存在的Excel檔案

app.Workbooks.Add(路徑和檔案名);

//讀取Excel2003

conExcel.ConnectionString = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + filepath + ";Extended Properties=\"Excel 8.0;HDR=YES;IMEX=1\"";

//讀取Excel2007

conExcel.ConnectionString = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" +filepath + ";Extended Properties=\"Excel 12.0;HDR=YES\"";

//設定禁止彈出儲存和覆寫的詢問提示框

app.DisplayAlerts = false;

app.AlertBeforeOverwriting = false;

//複制到指定的地方,預設路徑為我的檔案

wb.SaveCopyAs(@"D:\111.xlsx");

//建立一個Excel并儲存到指定的路徑

app = new Microsoft.Office.Interop.Excel.Application();

wb = app.Workbooks.Add(true);

app.Cells[1, 1] = "test";

wb.SaveCopyAs(@"C:\111.xlsx");

Close();

//直接讀取Excel檔案

DataTable myT=ExcelToDataTable("D:/檔案/新武昌站點資料.xls","sheet1");

String mystr=myT.Rows[0][0].ToString();

this.textBox1.Text=mystr;

//版本檢測

string strPathResult = "";

string strVersionResult = "";

string strKeyName = "Path";

object objResult = null;

Microsoft.Win32.RegistryValueKind regValueKind;

Microsoft.Win32.RegistryKey regKey = null;

Microsoft.Win32.RegistryKey regSubKey = null;

try

{

regKey = Microsoft.Win32.Registry.LocalMachine;

if (regSubKey == null)

{//office97

regSubKey = regKey.OpenSubKey(@"SOFTWARE\Microsoft\Office\8.0\Common\InstallRoot", false);

strVersionResult = "office97";

strKeyName = "OfficeBin";

}

{//Office2000

regSubKey = regKey.OpenSubKey(@"SOFTWARE\Microsoft\Office\9.0\Common\InstallRoot", false);

strVersionResult = "office2000";

strKeyName = "Path";

{//officeXp

regSubKey = regKey.OpenSubKey(@"SOFTWARE\Microsoft\Office\10.0\Common\InstallRoot", false);

strVersionResult = "officeXP";

{//Office2003

regSubKey = regKey.OpenSubKey(@"SOFTWARE\Microsoft\Office\11.0\Common\InstallRoot", false);

strVersionResult = "office2003";

{//office2007

regSubKey = regKey.OpenSubKey(@"SOFTWARE\Microsoft\Office\12.0\Common\InstallRoot", false);

strVersionResult = "office2007";

objResult = regSubKey.GetValue(strKeyName);

regValueKind = regSubKey.GetValueKind(strKeyName);

if (regValueKind == Microsoft.Win32.RegistryValueKind.String)

strPathResult = objResult.ToString();

catch (System.Security.SecurityException ex)

throw new System.Security.SecurityException("您沒有讀取系統資料庫的權限", ex);

catch (Exception ex)

throw new Exception("讀取系統資料庫出錯!", ex);

finally

if (regKey != null)

regKey.Close();

regKey = null;

if (regSubKey != null)

regSubKey.Close();

regSubKey = null;

MessageBox.Show(strVersionResult);

//擷取行數

wb = app.Workbooks.Open(path, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Missing.Value

, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Missing.Value);

ws = (Microsoft.Office.Interop.Excel.Worksheet)wb.Worksheets[1];

//行數

string count = ws.UsedRange.Rows.Count.ToString();

//讀取某個單元格資訊

Range r = (Range)ws.Cells[1, 1];

MessageBox.Show(r.Value2.ToString());

//删除一行資料(第一個單元格的位置)

public void DelRow(int row,string fPath)

OpenApp(fPath);

Range range = ws.UsedRange;

int columns = range.Columns.Count;

for (int i = 0; i < columns; i++)

((Range)ws.Cells[row, i+1]).Delete(Missing.Value);

wb.Save();

//删除一列

public void DelCol(int col, string fPath)

int rows = range.Rows.Count;

for (int i = 0; i < rows; i++)

((Range)ws.Cells[1, col]).Delete(Missing.Value);

//删除單元格

public void DelCell(int row,int col,string fPath)

Range range = (Range)ws.Cells[row, col];

range.Delete(Missing.Value);

在這裡需要注意一下,在Excel表中,删除和清除是不一樣的,清除(Clear)隻是把内容清空,而單元格還在,删除(Del)是把一個單元格删除,下面的資料就會 自動的對其,就會造成排版問題,這是需要注意的

//釋放資源

因為引用的是COM元件,是非托管的代碼,是以釋放資源的代碼就需要手動的編寫,在網上查找了很多的代碼都不好用,下面這個是比較好的。

public void Close()

if (app == null) return;

if (wb != null)

wb.Close(false, Missing.Value, Missing.Value);

ReleaseCom(wb);

wb = null;

this.app.Quit();

ReleaseCom(app);

app = null;

GC.Collect();

static private void ReleaseCom(object o)

System.Runtime.InteropServices.Marshal.ReleaseComObject(o);//強制釋放一個對象

catch { }

o = null;

//合并單元格

ws.get_Range(ws.Cells[x1, y1], ws.Cells[x2, y2]).Merge(Type.Missing);

public void UniteCells(string ws, int x1, int y1, int x2, int y2)

GetSheet(ws).get_Range(GetSheet(ws).Cells[x1, y1], GetSheet(ws).Cells[x2, y2]).Merge(Type.Missing);

//Range可以擷取一個單元格,也可以是多個單元格

擷取一個

Range ran=(Range)ws.Cells[Row,Col];

擷取多行

Range ran=ws.Get_Range(左上角單元格,右下角單元格);

Range ran=ws.Get_Range(ws.Cells[row,col],ws.Cells[row,Col]);

//設定格式

Range ra = (Range)ws.Cells[row + row + 4, col];

ra.HorizontalAlignment = Microsoft.Office.Interop.Excel.XlHAlign.xlHAlignRight;

ra.NumberFormatLocal = "#,##0.00";

//拷貝格式将ran選中的區域複制到ra選中的區域中

Range ran = ws.get_Range(ws.Cells[3,1],ws.Cells[4,9]);

Range ra = ws.get_Range(ws.Cells[5,1],ws.Cells[6,9]);

ran.Copy(ra);

本文轉自鋼鋼部落格園部落格，原文連結：http://www.cnblogs.com/xugang/archive/2012/02/08/2342129.html，如需轉載請自行聯系原作者