复制代码 代码如下:
[DllImport("User32.dll", CharSet = CharSet.Auto)]
public static extern int GetWindowThreadProcessId(IntPtr hwnd, out int ID);
private void ExportToExcel(string fielName)
{
//实例化一个Excel.Application对象
Microsoft.Office.Interop.Excel.Application excel = new Microsoft.Office.Interop.Excel.Application();

try
{
if (dgv_Result.DataSource == null)
return;
if (dgv_Result.Rows.Count == 0)
return;

//新增加一个工作簿，Workbook是直接保存，不会弹出保存对话框，加上Application会弹出保存对话框，值为false会报错
Microsoft.Office.Interop.Excel.Workbook xlBook = excel.Workbooks.Add(true);

//1.添加表头
excel.Cells[1, 1] = tyclass;
for (int i = 0; i < dgv_Result.Columns.Count; i++)
{

excel.Cells[2, i + 1] = dgv_Result.Columns[i].Name;
}

#region 2.实现Excel多维表头 采用合并单元格的方式
Microsoft.Office.Interop.Excel.Worksheet sheet = (Microsoft.Office.Interop.Excel.Worksheet)xlBook.ActiveSheet;
Microsoft.Office.Interop.Excel.Range excelRange = sheet.get_Range(sheet.Cells[1, 1], sheet.Cells[1, 2]);
Microsoft.Office.Interop.Excel.Range excelRange1 = sheet.get_Range(sheet.Cells[1, 3], sheet.Cells[1, 4]);
Microsoft.Office.Interop.Excel.Range excelRange2 = sheet.get_Range(sheet.Cells[1,5], sheet.Cells[1, 6]);
Microsoft.Office.Interop.Excel.Range excelRange3 = sheet.get_Range(sheet.Cells[1,7], sheet.Cells[1, 8]);
Microsoft.Office.Interop.Excel.Range excelRange4 = sheet.get_Range(sheet.Cells[1, 2], sheet.Cells[1, 3]);
Microsoft.Office.Interop.Excel.Range excelRange5 = sheet.get_Range(sheet.Cells[1, 6], sheet.Cells[1, 7]);
Microsoft.Office.Interop.Excel.Range excelRange6 = sheet.get_Range(sheet.Cells[1, 4], sheet.Cells[1,5]);
excelRange.Merge(excelRange.MergeCells);
excelRange1.Merge(excelRange1.MergeCells);
excelRange4.Merge(excelRange4.MergeCells);
excelRange2.Merge(excelRange2.MergeCells);
excelRange3.Merge(excelRange3.MergeCells);
excelRange5.Merge(excelRange5.MergeCells);
excelRange6.Merge(excelRange6.MergeCells);
Microsoft.Office.Interop.Excel.Range columnRange = sheet.get_Range("A1", "H2"); //得到 Range 范围 A-H 表示1-8列，1-2表示跨几行
columnRange.HorizontalAlignment = Microsoft.Office.Interop.Excel.XlHAlign.xlHAlignCenter;
columnRange.Font.Size = 10;
columnRange.Font.Bold = true;

#endregion

#region 3.添加行数据，直接给Range赋值可提高效率

Microsoft.Office.Interop.Excel.Range range = sheet.get_Range("A3", "H" + (dgv_Result.Rows.Count + 2).ToString()); //得到 Range 范围
string[,] AryData = new string[dgv_Result.Rows.Count-1, dgv_Result.Columns.Count];
for (int i = 0; i < dgv_Result.Rows.Count - 1; i++)
{
for (int j = 0; j < dgv_Result.Columns.Count; j++)
{

AryData[i,j] = dgv_Result.Rows[i].Cells[j].Value.ToString();
}
}
range.Value2 = AryData;
range.HorizontalAlignment = Microsoft.Office.Interop.Excel.XlHAlign.xlHAlignCenter;
#endregion

sheet.Cells.Columns.AutoFit();//设置Excel表格的 列宽
excel.SheetsInNewWorkbook = 1;//设置Excel单元格对齐方式
excel.DisplayAlerts = false; //设置禁止弹出保存和覆盖的询问提示框
excel.AlertBeforeOverwriting = false;
//保存excel文件
xlBook.SaveAs(fielName, Microsoft.Office.Interop.Excel.XlFileFormat.xlWorkbookNormal, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Microsoft.Office.Interop.Excel.XlSaveAsAccessMode.xlExclusive, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing);
MessageBox.Show("导出成功！", "提示");
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, "错误提示");
}
finally
{
IntPtr pt = new IntPtr(excel.Hwnd);
int k = 0;
GetWindowThreadProcessId(pt, out k);
System.Diagnostics.Process p = System.Diagnostics.Process.GetProcessById(k);
p.Kill();

}

}