using System;
using System.Collections.Generic;
using System.Text;
using System.Data;
using System.Runtime.InteropServices;
using System.Data.OleDb;
using System.IO;
using System.Windows.Forms;
using System.Collections;
using System.Drawing;
using Microsoft.Office.Interop.Excel;
using DevExpress.XtraGrid.Views.Grid;
namespace HDSafetyClient.Function
{
/// <summary>
/// winForm程序导入导出EXCEL
/// </summary>
/// <remarks>
/// 使用方法：
/// 读取EXCEL数据:ImportExcel();
/// 导出EXCEL:SaveAsExcel(system.data.datatable);
/// </remarks>
public class ExcelHelper
{
/// <summary>
/// 用oledb方式读取excel到datatable
/// </summary>
/// <remarks></remarks>
/// <param name="strPath">文件存放路径</param>
/// <returns></returns>
private static System.Data.DataTable GetData(string strPath)
{
System.Data.DataTable dt = new System.Data.DataTable();
try
{
string strCon = "Provider=Microsoft.Jet.OLEDB.4.0;" "Data Source=" strPath ";" "Extended Properties=Excel 8.0;";
string strSheetName = "";
using (OleDbConnection con = new OleDbConnection(strCon))
{
con.Open();
System.Data.DataTable dtTemp = con.GetOleDbSchemaTable(OleDbSchemaGuid.Tables, null);
strSheetName = dtTemp.Rows[0][2].ToString().Trim();
}
String strCmd = "select * from [" strSheetName "]";
OleDbDataAdapter cmd = new OleDbDataAdapter(strCmd, strCon);
cmd.Fill(dt);
}
catch (Exception) { throw; }
return dt;
}
/// <summary>
/// winform程序，点击程序上的按钮，找到Excel文件，打开后把这个Excel里的数据导入到oracle数据库里
/// </summary>
/// <param name="file">文件路径</param>
/// <returns></returns>
public static DataSet ImportExcel(string file)
{
FileInfo fileInfo = new FileInfo(file);
if (!fileInfo.Exists)
return null;
string strConn = @"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" file ";Extended Properties='Excel 8.0;HDR=NO;IMEX=1'";
OleDbConnection objConn = new OleDbConnection(strConn);
DataSet dsExcel = new DataSet();
try
{
objConn.Open();
string strSql = "select * from [Sheet1$]";
OleDbDataAdapter odbcExcelDataAdapter = new OleDbDataAdapter(strSql, objConn);
odbcExcelDataAdapter.Fill(dsExcel);
return dsExcel;
}
catch (Exception ex)
{
throw ex;
}
}
/// <summary>--导出到Excel--
/// Guo Jin
/// </summary>
/// <param name="dtExcel">数据源</param>
/// <param name="filePath">导出文件路径</param>
/// <param name="colsName">要导出的字段</param>
/// <param name="sheetName">工作簿名称</param>
/// <returns></returns>
public static int SaveAsExcel(System.Data.DataTable dtExcel, string filePath, Hashtable colsName, string sheetName)
{
int result = 0;
if (filePath.Length != 0)
{
//导出到execl
System.Reflection.Missing miss = System.Reflection.Missing.Value;
Microsoft.Office.Interop.Excel.ApplicationClass excel = new Microsoft.Office.Interop.Excel.ApplicationClass();
try
{
excel.Application.Workbooks.Add(true);
excel.Visible = false;//若是true，则在导出的时候会显示Excel界面。
if (excel == null)
{
result = 2;
return result;
}
Microsoft.Office.Interop.Excel.Workbooks books = (Microsoft.Office.Interop.Excel.Workbooks)excel.Workbooks;
Microsoft.Office.Interop.Excel.Workbook book = (Microsoft.Office.Interop.Excel.Workbook)(books.Add(miss));
Microsoft.Office.Interop.Excel.Worksheet sheet = (Microsoft.Office.Interop.Excel.Worksheet)book.ActiveSheet;
sheet.Name = sheetName;
//生成列名称
excel.Cells[1, 1] = "序号";
int ind = 0;
foreach (System.Collections.DictionaryEntry obj in colsName)
{
excel.Cells[1, ind 2] = obj.Value.ToString();//列名
ind ;
}
Microsoft.Office.Interop.Excel.Range range = excel.get_Range(excel.Cells[1, 1], excel.Cells[1, ind 1]);
range.Interior.Color = System.Drawing.Color.FromArgb(255, 204, 153).ToArgb();
range.Borders.LineStyle = 1; //设置单元格边框的粗细
//range.BorderAround(XlLineStyle.xlContinuous, XlBorderWeight.xlThick, XlColorIndex.xlColorIndexAutomatic, System.Drawing.Color.Black.ToArgb()); //给单元格加边框
//range.Interior.ColorIndex = 39; //填充颜色为淡紫色
//填充数据 行
for (int i = 0; i < dtExcel.Rows.Count; i )
{
// 列
int col = 0;
foreach (System.Collections.DictionaryEntry obj in colsName)
{
for (int j = 0; j < dtExcel.Columns.Count; j )
{
if (obj.Key.Equals(dtExcel.Columns[j].Caption))
{
if (dtExcel.Rows[i][j].ToString().GetType() == typeof(string))
{
excel.Cells[i 2, col 2] = "'" dtExcel.Rows[i][j].ToString().Trim();
}
else
{
excel.Cells[i 2, col 2] = dtExcel.Rows[i][j].ToString().Trim();
}
col ;
break;
}
}
}
//序号
excel.Cells[i 2, 1] = "'" (i 1);
}
sheet.SaveAs(filePath, miss, miss, miss, miss, miss, Microsoft.Office.Interop.Excel.XlSaveAsAccessMode.xlNoChange, miss, miss, miss);
book.Close(false, miss, miss);
books.Close();
excel.Quit();
System.Runtime.InteropServices.Marshal.ReleaseComObject(sheet);
System.Runtime.InteropServices.Marshal.ReleaseComObject(book);
System.Runtime.InteropServices.Marshal.ReleaseComObject(books);
System.Runtime.InteropServices.Marshal.ReleaseComObject(excel);
GC.Collect();
System.Diagnostics.Process.Start(filePath);
result = 1;
}
catch (Exception)
{
result = 3;
}
finally
{
//excel.Quit();
//KillSpecialExcel(excel);
}
}
else
result = 0;
return result;
}
/// <summary>--从DataGridView中把数据导出--
/// Guo Jin
/// </summary>
/// <param name="dgv"></param>
/// <param name="isShowExcle">是否显示excel</param>
/// <returns></returns>
public static bool DataGridviewShowToExcel(GridView dgv, bool isShowExcle)
{
if (dgv.RowCount == 0)
return false;
//建立Excel对象
Microsoft.Office.Interop.Excel.Application excel = new Microsoft.Office.Interop.Excel.Application();
excel.Application.Workbooks.Add(true);
excel.Visible = isShowExcle;
//生成字段名称
for (int i = 0; i < dgv.Columns.Count; i )
{
if (dgv.Columns[i].Caption != "主键" && dgv.Columns[i].Caption != "查看" && dgv.Columns[i].Caption != "修改" && dgv.Columns[i].Caption != "删除" && dgv.Columns[i].Caption != "11111")
excel.Cells[1, i 1] = dgv.Columns[i].Caption;
}
//填充数据
for (int i = 0; i < dgv.RowCount; i )
{
for (int j = 0; j < dgv.Columns.Count; j )
{
if (dgv.Columns[j].Caption != "主键" && dgv.Columns[j].Caption != "查看" && dgv.Columns[j].Caption != "修改" && dgv.Columns[j].Caption != "删除" && dgv.Columns[j].Caption != "11111")
excel.Cells[i 2, j 1] = dgv.GetRowCellValue(i, dgv.Columns[j]).ToString();
}
}
return true;
}
public static bool TabPageShowToExcel(TabPage tPage, bool isShowExcle)
{
//建立Excel对象
Microsoft.Office.Interop.Excel.Application excel = new Microsoft.Office.Interop.Excel.Application();
excel.Application.Workbooks.Add(true);
excel.Visible = isShowExcle;
//生成字段名称
excel.Cells[1, 1] = "企业日常检查记录";
int rowInd = 1;
foreach (LinkLabel lkb in tPage.Controls)
{
rowInd ;
excel.Cells[rowInd, 1] = lkb.Text;
}
return true;
}
//获得当前你选择的Excel Sheet的所有名字
private string[] GetExcelSheetNames(string filePath)
{
Microsoft.Office.Interop.Excel.ApplicationClass excelApp = new Microsoft.Office.Interop.Excel.ApplicationClass();
Microsoft.Office.Interop.Excel.Workbooks wbs = excelApp.Workbooks;
Microsoft.Office.Interop.Excel.Workbook wb = wbs.Open(filePath, Type.Missing, Type.Missing, Type.Missing, Type.Missing,
Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing,
Type.Missing, Type.Missing, Type.Missing, Type.Missing);
int count = wb.Worksheets.Count;
string[] names = new string[count];
for (int i = 1; i <= count; i )
{
names[i - 1] = ((Microsoft.Office.Interop.Excel.Worksheet)wb.Worksheets[i]).Name;
}
return names;
}
private void ReleaseExcel(Microsoft.Office.Interop.Excel.Application m_objExcel)
{
m_objExcel.Quit();
//System.Runtime.InteropServices.Marshal.ReleaseComObject((object)m_objExcel);
//System.Runtime.InteropServices.Marshal.ReleaseComObject((object)m_objBooks);
//System.Runtime.InteropServices.Marshal.ReleaseComObject((object)m_objBook);
//System.Runtime.InteropServices.Marshal.ReleaseComObject((object)sheet);
//sheet = null;
//m_objBook = null;
//m_objBooks = null;
m_objExcel = null;
GC.Collect(0);
}
#region KillAllExcel 停止EXCEL进程
private bool KillAllExcel(Microsoft.Office.Interop.Excel.Application m_objExcel)
{
try
{
if (m_objExcel != null) // isRunning是判断xlApp是怎么启动的flag.
{
m_objExcel.Quit();
System.Runtime.InteropServices.Marshal.ReleaseComObject(m_objExcel);
//释放COM组件，其实就是将其引用计数减1
//System.Diagnostics.Process theProc;
foreach (System.Diagnostics.Process theProc in System.Diagnostics.Process.GetProcessesByName("EXCEL"))
{
//先关闭图形窗口。如果关闭失败...有的时候在状态里看不到图形窗口的excel了，
//但是在进程里仍然有EXCEL.EXE的进程存在，那么就需要杀掉它:p
if (theProc.CloseMainWindow() == false)
{
theProc.Kill();
}
}
m_objExcel = null;
return true;
}
}
catch
{
return false;
}
return true;
}
#endregion
#region Kill Special Excel Process
[DllImport("User32.dll", CharSet = CharSet.Auto)]
static extern int GetWindowThreadProcessId(IntPtr hWnd, out int lpdwProcessId);
private static void KillSpecialExcel(Microsoft.Office.Interop.Excel.Application m_objExcel)
{
try
{
if (m_objExcel != null)
{
int lpdwProcessId;
GetWindowThreadProcessId(new IntPtr(m_objExcel.Hwnd), out lpdwProcessId);
System.Diagnostics.Process.GetProcessById(lpdwProcessId).Kill();
}
}
catch (Exception ex)
{
Console.WriteLine("Delete Excel Process Error:" ex.Message);
}
}
#endregion
/// <summary>
/// 导入EXCEL
/// </summary>
/// <returns> System.Data.DataTable</returns>
public static System.Data.DataTable ImportExcel()
{
System.Data.DataTable dt;
OpenFileDialog openfile = new OpenFileDialog();
openfile.Filter = "Excel表格文件(*.xls)|*.xls";
if (openfile.ShowDialog() == DialogResult.OK)
{
try
{
dt = GetData(openfile.FileName);//获得Excel
}
catch (Exception ex)
{
throw ex;
}
}
else
{
dt = null;
}
return dt;
}
public static System.Data.DataTable ImportExcel1(string file)
{
System.Data.DataTable dt;
try
{
dt = GetData(file);
}
catch (Exception ex)
{
throw ex;
}
return dt;
}
}
}
