Winform 中 dataGridView 导出到Excel中的方法总结

      最近，在做CS端数据导出到Excel中时网上找了很多代码感觉都不是自己想要的，通过自己的整理归纳得到一个比较通用的方法，就给大家分享一下；

       该方法需要用到两个参数(即对象),一个  DataGridView对象 另外一个是我自己添加的一个进度条的对象，这样导出数据的时候会出现一个进度条，废话就不多说了，直接上源码，大家有什么想法可以留言一起讨论。

  第一种方式：

 

   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)|*.xlsx";
            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 && dgv.Columns[i].HeaderText != "删除")
                        {
                            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 && dgv.Columns[j].HeaderText != "删除")
                            {
                                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);
            }
        }

　　第二种方式

 public static void DataGridViewToExcel(DataGridView dgv,ProgressBar tempProgressBar)
        {
            #region   验证可操作性     

            //申明保存对话框      
            SaveFileDialog dlg = new SaveFileDialog();
            //默然文件后缀      
            dlg.DefaultExt = "xlsx";
            //文件后缀列表      
            dlg.Filter = "EXCEL文件(*.XLS)|*.xlsx";
            //默然路径是系统当前路径      
            dlg.InitialDirectory = Directory.GetCurrentDirectory();
            //打开保存对话框      
            if (dlg.ShowDialog() == DialogResult.Cancel) return;
            //返回文件路径      
            string fileNameString = dlg.FileName;
            //验证strFileName是否为空或值无效      
            if (fileNameString.Trim() == " ")
            { return; }
            //定义表格内数据的行数和列数      
            int rowscount = dgv.Rows.Count;
            int colscount = dgv.Columns.Count;
            //行数必须大于0      
            if (rowscount <= 0)
            {
                MessageBox.Show("没有数据可供保存 ", "提示 ", MessageBoxButtons.OK, MessageBoxIcon.Information);
                return;
            }

            //列数必须大于0      
            if (colscount <= 0)
            {
                MessageBox.Show("没有数据可供保存 ", "提示 ", MessageBoxButtons.OK, MessageBoxIcon.Information);
                return;
            }

            //行数不可以大于65536      
            if (rowscount > 65536)
            {
                MessageBox.Show("数据记录数太多(最多不能超过65536条)，不能保存 ", "提示 ", MessageBoxButtons.OK, MessageBoxIcon.Information);
                return;
            }

            //列数不可以大于255      
            if (colscount > 255)
            {
                MessageBox.Show("数据记录行数太多，不能保存 ", "提示 ", MessageBoxButtons.OK, MessageBoxIcon.Information);
                return;
            }

            //验证以fileNameString命名的文件是否存在，如果存在删除它      
            FileInfo file = new FileInfo(fileNameString);
            if (file.Exists)
            {
                try
                {
                    file.Delete();
                }
                catch (Exception error)
                {
                    MessageBox.Show(error.Message, "删除失败 ", MessageBoxButtons.OK, MessageBoxIcon.Warning);
                    return;
                }
            }
            #endregion
            Microsoft.Office.Interop.Excel.Application objExcel = null;
            Microsoft.Office.Interop.Excel.Workbook objWorkbook = null;
            Microsoft.Office.Interop.Excel.Worksheet objsheet = null;
            try
            {
                //申明对象      
                objExcel = new Microsoft.Office.Interop.Excel.Application();
                objWorkbook = objExcel.Workbooks.Add(Missing.Value);
                objsheet = (Microsoft.Office.Interop.Excel.Worksheet)objWorkbook.ActiveSheet;
                //设置EXCEL不可见      
                objExcel.Visible = false;

                //向Excel中写入表格的表头      
                int displayColumnsCount = 1;
                for (int i = 0; i <= dgv.ColumnCount - 1; i++)
                {
                    if (dgv.Columns[i].Visible == true&& dgv.Columns[i].HeaderText.Trim()!="删除" && dgv.Columns[i].HeaderText.Trim() !="")
                    {
                        objExcel.Cells[1, displayColumnsCount] = dgv.Columns[i].HeaderText.Trim();
                        displayColumnsCount++;
                    }
                }
                //设置进度条      
                tempProgressBar.Refresh();
                tempProgressBar.Visible = true;
                tempProgressBar.Minimum =1;
                tempProgressBar.Maximum =dgv.RowCount;
                tempProgressBar.Step = 1;
                //向Excel中逐行逐列写入表格中的数据      
                for (int row = 0; row <= dgv.RowCount - 1; row++)
                {
                    tempProgressBar.PerformStep();

                    displayColumnsCount = 1;
                    for (int col = 0; col < colscount; col++)
                    {
                        if (dgv.Columns[col].Visible == true&& dgv.Columns[col].HeaderText!="删除" && dgv.Columns[col].HeaderText.Trim() != "")
                        {
                            try
                            {
                                string Val = dgv.Rows[row].Cells[col].Value.ToString().Trim();
                                if (Val.Length >8)
                                {
                                  Val = "'" + Val;//加单引号
                                }
                                objExcel.Cells[row + 2, displayColumnsCount] = Val;
                                displayColumnsCount++;
                            }
                            catch (Exception)
                            {

                            }

                        }
                    }
                }
                //隐藏进度条      
                tempProgressBar.Visible = false;
                //保存文件      
                objWorkbook.SaveAs(fileNameString, Missing.Value, Missing.Value, Missing.Value, Missing.Value,
                        Missing.Value, Microsoft.Office.Interop.Excel.XlSaveAsAccessMode.xlShared, Missing.Value, Missing.Value, Missing.Value,
                        Missing.Value, Missing.Value);
            }
            catch (Exception error)
            {
                MessageBox.Show(error.Message, "警告 ", MessageBoxButtons.OK, MessageBoxIcon.Warning);
                return;
            }
            finally
            {
                //关闭Excel应用      
                if (objWorkbook != null) objWorkbook.Close(Missing.Value, Missing.Value, Missing.Value);
                if (objExcel.Workbooks != null) objExcel.Workbooks.Close();
                if (objExcel != null) objExcel.Quit();

                objsheet = null;
                objWorkbook = null;
                objExcel = null;
            }
            MessageBox.Show(fileNameString + "导出完毕! ", "提示 ", MessageBoxButtons.OK, MessageBoxIcon.Information);

        }

   个人推荐第一种，经过测试第一种也可以，但是比较麻烦一些，第二种通俗简单，推荐使用；

        根据个人喜好的选择吧，欢迎大神前来提意见；