一、导出类（不适用于分页情况）
using System;
using System.Collections;
using System.Text;
using System.Data;
using System.Threading;
using System.Windows.Forms;
using System.Collections.Generic;
using Microsoft.Office;
using Excel = Microsoft.Office.Interop.Excel;
namespace WeightSystem
{
public class ExportToExcel
{
public Excel.Application m_xlApp = null;
public void OutputAsExcelFile( int a ,DataGridView dataGridView)
{
if (dataGridView.Rows.Count <= 0)
{
MessageBox.Show("无数据！", "提示", MessageBoxButtons.OK, MessageBoxIcon.Warning); return;
}
string filePath = "";
SaveFileDialog s = new SaveFileDialog();
s.Title = "保存Excel文件";
//s.Filter = "Office 2003 Excel文件(*.xls)|*.xls|Office 2007 Excel文件(*.xlsx)|*.xlsx|All files (*.*)|*.*";
s.Filter = "Office 2003 Excel文件(*.xls)|*.xls|Office 2007 Excel文件(*.xlsx)|*.xlsx";
//s.Filter = "Excel文件(*.xlsx)|*.xlsx";
s.FilterIndex = 2;//索引设成2,那么当出现对话框时,文件保存类型,默认为"exe files"
if (s.ShowDialog() == DialogResult.OK)
filePath = s.FileName;
else
return;
//第一步：将dataGridView转化为dataTable,这样可以过滤掉dataGridView中的隐藏列
DataTable tmpDataTable = new DataTable("tmpDataTable");
DataTable modelTable = new DataTable("ModelTable");
//for (int column = 0; column < dataGridView.Columns.Count; column++)
//从第2列开始，过滤掉选择，修改和删除列
if(a==1)
{
for (int column = 1; column < dataGridView.Columns.Count; column++)
{
if (dataGridView.Columns[column].Visible == true)
{
DataColumn tempColumn = new DataColumn(dataGridView.Columns[column].HeaderText, typeof(string));
tmpDataTable.Columns.Add(tempColumn);
DataColumn modelColumn = new DataColumn(dataGridView.Columns[column].Name, typeof(string));
modelTable.Columns.Add(modelColumn);
}
}
}
else if (a== 0)
{
//从第1列开始，过滤掉选择，修改和删除列
for (int column = 0; column < dataGridView.Columns.Count; column++)
{
if (dataGridView.Columns[column].Visible == true)
{
DataColumn tempColumn = new DataColumn(dataGridView.Columns[column].HeaderText, typeof(string));
tmpDataTable.Columns.Add(tempColumn);
DataColumn modelColumn = new DataColumn(dataGridView.Columns[column].Name, typeof(string));
modelTable.Columns.Add(modelColumn);
}
}
}
for (int row = 0; row < dataGridView.Rows.Count; row++)
{
if (dataGridView.Rows[row].Visible == false)
continue;
DataRow tempRow = tmpDataTable.NewRow();
for (int i = 0; i < tmpDataTable.Columns.Count; i++)
tempRow[i] = dataGridView.Rows[row].Cells[modelTable.Columns[i].ColumnName].Value;
tmpDataTable.Rows.Add(tempRow);
}
if (tmpDataTable == null)
{
return;
}
//第二步：导出dataTable到Excel
long rowNum = tmpDataTable.Rows.Count;//行数
int columnNum = tmpDataTable.Columns.Count;//列数
Excel.Application m_xlApp = new Excel.Application();
m_xlApp.DisplayAlerts = false;//不显示更改提示
m_xlApp.Visible = false;
Excel.Workbooks workbooks = m_xlApp.Workbooks;
Excel.Workbook workbook = workbooks.Add(Excel.XlWBATemplate.xlWBATWorksheet);
Excel.Worksheet worksheet = (Excel.Worksheet)workbook.Worksheets[1];//取得sheet1
try
{
string[,] datas = new string[rowNum + 1, columnNum];
for (int i = 0; i < columnNum; i++) //写入字段
datas[0, i] = tmpDataTable.Columns[i].Caption;
//Excel.Range range = worksheet.get_Range(worksheet.Cells[1, 1], worksheet.Cells[1, columnNum]);
Excel.Range range = m_xlApp.Range[worksheet.Cells[1, 1], worksheet.Cells[1, columnNum]];
range.Interior.ColorIndex = 15;//15代表灰色
range.Font.Bold = true;
range.Font.Size = 10;
int r = 0;
for (r = 0; r < rowNum; r++)
{
for (int i = 0; i < columnNum; i++)
{
object obj = tmpDataTable.Rows[r][tmpDataTable.Columns[i].ToString()];
datas[r + 1, i] = obj == null ? "" : "'" + obj.ToString().Trim();//在obj.ToString()前加单引号是为了防止自动转化格式
}
System.Windows.Forms.Application.DoEvents();
//添加进度条
}
//Excel.Range fchR = worksheet.get_Range(worksheet.Cells[1, 1], worksheet.Cells[rowNum + 1, columnNum]);
Excel.Range fchR = m_xlApp.Range[worksheet.Cells[1, 1], worksheet.Cells[rowNum + 1, columnNum]];
fchR.Value2 = datas;
worksheet.Columns.EntireColumn.AutoFit();//列宽自适应。
//worksheet.Name = "dd";
//m_xlApp.WindowState = Excel.XlWindowState.xlMaximized;
m_xlApp.Visible = false;
// = worksheet.get_Range(worksheet.Cells[1, 1], worksheet.Cells[rowNum + 1, columnNum]);
range = m_xlApp.Range[worksheet.Cells[1, 1], worksheet.Cells[rowNum + 1, columnNum]];
//range.Interior.ColorIndex = 15;//15代表灰色
range.Font.Size = 9;
range.RowHeight = 14.25;
range.Borders.LineStyle = 1;
range.HorizontalAlignment = 1;
workbook.Saved = true;
workbook.SaveCopyAs(filePath);
}
catch (Exception ex)
{
MessageBox.Show("导出异常：" + ex.Message, "导出异常", MessageBoxButtons.OK, MessageBoxIcon.Warning);
}
finally
{
EndReport();
}
m_xlApp.Workbooks.Close();
m_xlApp.Workbooks.Application.Quit();
m_xlApp.Application.Quit();
m_xlApp.Quit();
MessageBox.Show("导出成功！", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
private void EndReport()
{
object missing = System.Reflection.Missing.Value;
try
{
//m_xlApp.Workbooks.Close();
//m_xlApp.Workbooks.Application.Quit();
//m_xlApp.Application.Quit();
//m_xlApp.Quit();
}
catch { }
finally
{
try
{
System.Runtime.InteropServices.Marshal.ReleaseComObject(m_xlApp.Workbooks);
System.Runtime.InteropServices.Marshal.ReleaseComObject(m_xlApp.Application);
System.Runtime.InteropServices.Marshal.ReleaseComObject(m_xlApp);
m_xlApp = null;
}
catch { }
try
{
//清理垃圾进程
this.killProcessThread();
}
catch { }
GC.Collect();
}
}
private void killProcessThread()
{
ArrayList myProcess = new ArrayList();
for (int i = 0; i < myProcess.Count; i++)
{
try
{
System.Diagnostics.Process.GetProcessById(int.Parse((string)myProcess[i])).Kill();
}
catch { }
}
}
}
}
二、应用
//导出按钮
private void btnExport_Click(object sender, EventArgs e)
{
ExportToExcel d = new ExportToExcel();
d.OutputAsExcelFile(0, dgvTable);
}