C#Winform导出Excel

View Code
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using Microsoft.Office.Interop.Excel;
namespace SaleApplication.Class
{
class ExportExcelOfWinform
{
public static bool OutToExcelFromDataGridView(string title, DataGridView dgv, bool isShowExcel)
{
int titleColumnSpan = 0;//标题的跨列数
string fileName = "";//保存的excel文件名
int columnIndex = 1;//列索引
if (dgv.Rows.Count == 0)
return false;
/*保存对话框*/
SaveFileDialog sfd = new SaveFileDialog();
sfd.Filter = "导出Excel(*.xls)|*.xls";
sfd.FileName = title + DateTime.Now.ToString("yyyyMMddhhmmss");

if (sfd.ShowDialog() == DialogResult.OK)
{
fileName = sfd.FileName;
/*建立Excel对象*/
Microsoft.Office.Interop.Excel.Application excel = new Microsoft.Office.Interop.Excel.Application();
if (excel == null)
{
MessageBox.Show("无法创建Excel对象,可能您的计算机未安装Excel!");
return false;
}
try
{
excel.Application.Workbooks.Add(true);
excel.Visible = isShowExcel;
/*分析标题的跨列数*/
foreach (DataGridViewColumn column in dgv.Columns)
{
if (column.Visible == true)
titleColumnSpan++;
}
/*合并标题单元格*/
Microsoft.Office.Interop.Excel.Worksheet worksheet = (Microsoft.Office.Interop.Excel.Worksheet)excel.ActiveSheet;
//worksheet.get_Range("A1", "C10").Merge();
worksheet.get_Range(worksheet.Cells[1, 1] as Range, worksheet.Cells[1, titleColumnSpan] as Range).Merge();
/*生成标题*/
excel.Cells[1, 1] = title;
(excel.Cells[1, 1] as Range).HorizontalAlignment = XlHAlign.xlHAlignCenter;//标题居中
//生成字段名称
columnIndex = 1;
for (int i = 0; i < dgv.ColumnCount; i++)
{
if (dgv.Columns[i].Visible == true)
{
excel.Cells[2, columnIndex] = dgv.Columns[i].HeaderText;
(excel.Cells[2, columnIndex] as Range).HorizontalAlignment = XlHAlign.xlHAlignCenter;//字段居中
columnIndex++;
}
}
//填充数据
for (int i = 0; i < dgv.RowCount; i++)
{
columnIndex = 1;
for (int j = 0; j < dgv.ColumnCount; j++)
{
if (dgv.Columns[j].Visible == true)
{
if (dgv[j, i].ValueType == typeof(string))
{
excel.Cells[i + 3, columnIndex] = "'" + dgv[j, i].Value.ToString();
}
else
{
excel.Cells[i + 3, columnIndex] = dgv[j, i].Value.ToString();
}
(excel.Cells[i + 3, columnIndex] as Range).HorizontalAlignment = XlHAlign.xlHAlignLeft;//字段居中
columnIndex++;
}
}
}
worksheet.SaveAs(fileName, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing);
}
catch { }
finally
{
excel.Quit();
excel = null;
GC.Collect();
}
//KillProcess("Excel");
return true;
}
else
{
return false;
}
}
private static void KillProcess(string processName)//杀死与Excel相关的进程
{
System.Diagnostics.Process myproc = new System.Diagnostics.Process();//得到所有打开的进程
try
{
foreach (System.Diagnostics.Process thisproc in System.Diagnostics.Process.GetProcessesByName(processName))
{
if (!thisproc.CloseMainWindow())
{
thisproc.Kill();
}
}
}
catch (Exception Exc)
{
throw new Exception("", Exc);
}
}

}
}