//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(jīng)存在的Excel文件
Microsoft.Office.Interop.Excel.Application app = new Microsoft.Office.Interop.Excel.Application();
app.Workbooks.Add(路徑和文件名);
app.Visible = true;
//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(shè)置禁止彈出保存和覆蓋的詢問提示框
app.DisplayAlerts = false;
app.AlertBeforeOverwriting = false;
//復(fù)制到指定的地方,默認路徑為我的文檔
wb.SaveCopyAs(@"D:\111.xlsx");
//新建一個Excel并保存到指定的路徑
app = new Microsoft.Office.Interop.Excel.Application();
wb = app.Workbooks.Add(true);
app.Cells[1, 1] = "test";
app.DisplayAlerts = false;
app.AlertBeforeOverwriting = false;
wb.SaveCopyAs(@"C:\111.xlsx");
Close();
//直接讀取Excel文件
DataTable myT=ExcelToDataTable("D:/文件/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";
}
if (regSubKey == null)
{//Office2000
regSubKey = regKey.OpenSubKey(@"SOFTWARE\Microsoft\Office\9.0\Common\InstallRoot", false);
strVersionResult = "office2000";
strKeyName = "Path";
}
if (regSubKey == null)
{//officeXp
regSubKey = regKey.OpenSubKey(@"SOFTWARE\Microsoft\Office\10.0\Common\InstallRoot", false);
strVersionResult = "officeXP";
strKeyName = "Path";
}
if (regSubKey == null)
{//Office2003
regSubKey = regKey.OpenSubKey(@"SOFTWARE\Microsoft\Office\11.0\Common\InstallRoot", false);
strVersionResult = "office2003";
strKeyName = "Path";
}
if (regSubKey == null)
{//office2007
regSubKey = regKey.OpenSubKey(@"SOFTWARE\Microsoft\Office\12.0\Common\InstallRoot", false);
strVersionResult = "office2007";
strKeyName = "Path";
}
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("您沒有讀取注冊表的權(quán)限", ex);
}
catch (Exception ex)
{
throw new Exception("讀取注冊表出錯!", ex);
}
finally
{
if (regKey != null)
{
regKey.Close();
regKey = null;
}
if (regSubKey != null)
{
regSubKey.Close();
regSubKey = null;
}
}
MessageBox.Show(strVersionResult);
//獲取行數(shù)
app = new Microsoft.Office.Interop.Excel.Application();
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(shù)
string count = ws.UsedRange.Rows.Count.ToString();
//讀取某個單元格信息
Range r = (Range)ws.Cells[1, 1];
MessageBox.Show(r.Value2.ToString());
//刪除一行數(shù)據(jù)(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();
Close();
}
//刪除一列
public void DelCol(int col, string fPath)
{
OpenApp(fPath);
Range range = ws.UsedRange;
int rows = range.Rows.Count;
for (int i = 0; i < rows; i++)
{
((Range)ws.Cells[1, col]).Delete(Missing.Value);
}
wb.Save();
Close();
}
//刪除單元格
public void DelCell(int row,int col,string fPath)
{
OpenApp(fPath);
Range range = (Range)ws.Cells[row, col];
range.Delete(Missing.Value);
wb.Save();
Close();
}
在這里需要注意一下,在Excel表中,刪除和清除是不一樣的,清除(Clear)只是把內(nèi)容清空,而單元格還在,刪除(Del)是把一個單元格刪除,下面的數(shù)據(jù)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組件,是非托管的代碼,所以釋放資源的代碼就需要手動的編寫,在網(wǎng)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)
{
try
{
System.Runtime.InteropServices.Marshal.ReleaseComObject(o);//強制釋放一個對象
}
catch { }
finally
{
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)
//合并單元格
{
GetSheet(ws).get_Range(GetSheet(ws).Cells[x1, y1], GetSheet(ws).Cells[x2, y2]).Merge(Type.Missing);
}
//Range可以獲取一個單元格,也可以是多個單元格
獲取一個
Range ran=(Range)ws.Cells[Row,Col];
獲取多行
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(shè)置格式
Range ra = (Range)ws.Cells[row + row + 4, col];
ra.HorizontalAlignment = Microsoft.Office.Interop.Excel.XlHAlign.xlHAlignRight;
ra.NumberFormatLocal = "#,##0.00";
//拷貝格式將ran選中的區(qū)域復(fù)制到ra選中的區(qū)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);
