导出Excel总结

先贴一段最最简单的代码，直接生成Excel

 

 public bool ExportDataGridView(DataGridView dgv, bool isShowExcel)
        {
            if (dgv.Rows.Count == 0)
            {
                return false;
            }
            Microsoft.Office.Interop.Excel.Application excel = new Microsoft.Office.Interop.Excel.Application();
            excel.Application.Workbooks.Add(true);
            excel.Visible = isShowExcel;

            for (int i = 0; i < dgv.ColumnCount; i++)
            {
                excel.Cells[1, i + 1] = dgv.Columns[i].HeaderText;
            }

            for (int i = 0; i<dgv.RowCount - 1; i++)
            {
                for (int j = 0; j < dgv.ColumnCount; j++)
                {
                    if (dgv[j, i].ValueType == typeof(string))
                    {
                        excel.Cells[i + 2, j + 1] = "" + dgv[j, i].Value.ToString();
                    }
                    else
                    {
                        excel.Cells[i + 2, j + 1] = dgv[j, i].Value.ToString();
                    }
                }
            }

            return true;
        }

 

具体的需要弹出对话框，设置格式的：

 

        [DllImport("User32.dll", CharSet = CharSet.Auto)]
        public static extern int GetWindowThreadProcessId(IntPtr hwnd, out   int ID);   
        public void print(System.Windows.Forms.DataGridView dataGridView1)
        {
            //实例化一个Excel.Application对象  
            Microsoft.Office.Interop.Excel.Application app = new Microsoft.Office.Interop.Excel.Application();
            //导出到execl   
            try
            {
                //让后台执行设置为不可见，为true的话会看到打开一个Excel，然后数据在往里写  
                app.Visible = false;
               
                //没有数据的话就不往下执行   
                if (dataGridView1.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.Workbooks workbooks = app.Workbooks;
                Microsoft.Office.Interop.Excel.Workbook workbook = workbooks.Add(true);

                //新建wSheet
                Microsoft.Office.Interop.Excel.Worksheet wSheet = (Microsoft.Office.Interop.Excel.Worksheet)workbook.Worksheets.Add(Type.Missing, Type.Missing, Type.Missing, Type.Missing);
                wSheet.Name ="报警数据";

                //生成Excel中列头名称   
                for (int i = 6; i < dataGridView1.Columns.Count-1; i++)
                {
                    wSheet.Cells[1, i - 5] = dataGridView1.Columns[i].HeaderText;
                    wSheet.get_Range(wSheet.Cells[1, i - 5], wSheet.Cells[1, i - 5]).HorizontalAlignment = Microsoft.Office.Interop.Excel.XlHAlign.xlHAlignCenter;
                    wSheet.get_Range(wSheet.Cells[1, i - 5], wSheet.Cells[1, i - 5]).Font.Bold = true;
                    //设置行高
                    wSheet.get_Range(wSheet.Cells[1, i - 5], wSheet.Cells[1, i - 5]).RowHeight = 20;
                }
                //把DataGridView当前页的数据保存在Excel中   
                for (int i = 0; i < dataGridView1.Rows.Count - 1; i++)
                {
                    for (int j = 6; j < dataGridView1.Columns.Count-1; j++)
                    {
                   
                        wSheet.Cells[i + 2, j - 5] = "'" + dataGridView1[j, i].Value.ToString();
                        //设置行高
                        wSheet.get_Range(wSheet.Cells[i + 2, j - 5], wSheet.Cells[i + 2, j - 5]).RowHeight = 20;
                        //画表格线
                        wSheet.get_Range(wSheet.Cells[i + 2, j - 5], wSheet.Cells[i + 2, j - 5]).BorderAround(
                            Microsoft.Office.Interop.Excel.XlLineStyle.xlContinuous, Microsoft.Office.Interop.Excel.XlBorderWeight.xlThin,
                            Microsoft.Office.Interop.Excel.XlColorIndex.xlColorIndexAutomatic, Type.Missing);
                    }
                    
                }

                app.DisplayAlerts = false;
                app.AlertBeforeOverwriting = false;

                //文件的名称
                string FileName = app.GetSaveAsFilename(DateTime.Now.ToShortDateString()+"报警数据"
                + ".xls", "Excel文件 (*.xls), *.xls", 1, "报警数据", "报警数据").ToString();

                //保存Excel文件
                workbook.SaveAs(FileName, Type.Missing, Type.Missing, Type.Missing,
                    Type.Missing, Type.Missing, Microsoft.Office.Interop.Excel.XlSaveAsAccessMode.xlExclusive,
                    Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing);

                //关闭workbook
                workbook.Close(Type.Missing, Type.Missing, Type.Missing);
                workbooks.Close();
                app.Quit();

                //删除Excel进程
                IntPtr t = new IntPtr(app.Hwnd);
                int k = 0;
                GetWindowThreadProcessId(t, out   k);
                System.Diagnostics.Process p = System.Diagnostics.Process.GetProcessById(k);
                p.Kill();                   
                app = null;

            }
            catch (Exception ex)
            {
                IntPtr t = new IntPtr(app.Hwnd);
                int k = 0;
                GetWindowThreadProcessId(t, out   k);
                System.Diagnostics.Process p = System.Diagnostics.Process.GetProcessById(k);
                p.Kill();
                app = null;

                MessageBox.Show(ex.Message, "错误提示");
            }
        }
        #endregion