【代码】C#导出Excel

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Microsoft.Office.Interop.Excel;
using Microsoft.Office.Core;
using System.Windows.Forms;
using System.Data.SqlClient;
using System.Data.OleDb;
using System.Threading;

namespace UI
{
public class Excel
{
public void RExcel(string name,DataGridView dgv)
{
//总可见列数，总可见行数
int colCount = dgv.Columns.GetColumnCount(DataGridViewElementStates.Visible);
int rowCount = dgv.Rows.GetRowCount(DataGridViewElementStates.Visible);
//dataGridView 没有数据提示
if (dgv.Rows.Count == 0 || rowCount == 0)
{
MessageBox.Show("表中没有数据", "提示");
}
else
{
//选择创建文件的路径
SaveFileDialog save = new SaveFileDialog();
save.Filter = "excel files(*.xlsx)|*.xlsx";
save.Title = "请选择要导出数据的位置";
save.FileName = name + DateTime.Now.ToLongDateString();
if (save.ShowDialog() == DialogResult.OK)
{
string fileName = save.FileName;
//MessageBox.Show(save.FileName);
// 创建Excel对象
Microsoft.Office.Interop.Excel.Application excel = new Microsoft.Office.Interop.Excel.Application();
if (excel == null)
{
MessageBox.Show("Excel无法启动", "提示");
return;
}
//创建Excel工作薄
Microsoft.Office.Interop.Excel.Workbook excelBook = excel.Workbooks.Add(true);
Microsoft.Office.Interop.Excel.Worksheet excelSheet = (Microsoft.Office.Interop.Excel.Worksheet)excelBook.Worksheets[1];
//excel.Application.Workbooks.Add(true);
//生成字段名称
int k = 0;
for (int i = 0; i < dgv.ColumnCount; i++)
{
if (dgv.Columns[i].Visible)  //不导出隐藏的列
{
excel.Cells[1, k + 1] = dgv.Columns[i].HeaderText;
k++;
}
}
//填充数据
for (int i = 0; i < dgv.RowCount; i++)
{
k = 0;
for (int j = 0; j < dgv.ColumnCount; j++)
{
if (dgv.Columns[j].Visible)  //不导出隐藏的列
{
if (dgv[j, i].ValueType == typeof(string))
{
excel.Cells[i + 2, k + 1] = "" + dgv[j, i].Value.ToString();
}
else
{
excel.Cells[i + 2, k + 1] = dgv[j, i].Value.ToString();
}
}
k++;
}
}
try
{
excelBook.Saved = true;
excelBook.SaveCopyAs(fileName);
MessageBox.Show("导出成功！");
}
catch
{
MessageBox.Show("导出失败，文件可能正在使用中", "提示");
}

}
}
}
}
}

private void btnExcel_Click(object sender, EventArgs e)//调用
{
string name = "";
Excel ex = new Excel();
ex.RExcel(name,dataGridView1);
}