c#中DataGridView导出Excel

Question

求在c#中DataGridView导出Excel方法，最好有代码

Answer 1

refer:
public void ExportExcel(string fileName, DataGridView myDGV)
        {
            string saveFileName = "";
            //bool fileSaved = false;
            SaveFileDialog saveDialog = new SaveFileDialog();
            saveDialog.DefaultExt = "xls";
            saveDialog.Filter = "Excel文件|*.xls";
            saveDialog.FileName = fileName;
            saveDialog.ShowDialog();
            saveFileName = saveDialog.FileName;
            if (saveFileName.IndexOf(":") < 0) return; //被点了取消
            Microsoft.Office.Interop.Excel.Application xlApp = new Microsoft.Office.Interop.Excel.Application();
            if (xlApp == null)
            {
                MessageBox.Show("无法创建Excel对象，可能您的机子未安装Excel");
                return;
            }            Microsoft.Office.Interop.Excel.Workbooks workbooks = xlApp.Workbooks;
            Microsoft.Office.Interop.Excel.Workbook workbook = workbooks.Add(Microsoft.Office.Interop.Excel.XlWBATemplate.xlWBATWorksheet);
            Microsoft.Office.Interop.Excel.Worksheet worksheet = (Microsoft.Office.Interop.Excel.Worksheet)workbook.Worksheets[1];//取得sheet1            //写入标题
            for (int i = 0; i < myDGV.ColumnCount; i++)
            {
                worksheet.Cells[1, i + 1] = myDGV.Columns[i].HeaderText;
            }
            //写入数值
            for (int r = 0; r < myDGV.Rows.Count; r++)
            {
                for (int i = 0; i < myDGV.ColumnCount; i++)
                {
                    worksheet.Cells[r + 2, i + 1] = myDGV.Rows[r].Cells[i].Value;
                }
                System.Windows.Forms.Application.DoEvents();
            }
            worksheet.Columns.EntireColumn.AutoFit();//列宽自适应
            //if (Microsoft.Office.Interop.cmbxType.Text != "Notification")
            //{
            //    Excel.Range rg = worksheet.get_Range(worksheet.Cells[2, 2], worksheet.Cells[ds.Tables[0].Rows.Count + 1, 2]);
            //    rg.NumberFormat = "00000000";
            //}            if (saveFileName != "")
            {
                try
                {
                    workbook.Saved = true;
                    workbook.SaveCopyAs(saveFileName);
                    //fileSaved = true;
                }
                catch (Exception ex)
                {
                    //fileSaved = false;
                    MessageBox.Show("导出文件时出错,文件可能正被打开！\n" + ex.Message);
                }            }
            //else
            //{
            //    fileSaved = false;
            //}
            xlApp.Quit();
            GC.Collect();//强行销毁
            // if (fileSaved && System.IO.File.Exists(saveFileName)) System.Diagnostics.Process.Start(saveFileName); //打开EXCEL
            MessageBox.Show(fileName + " 保存成功", "提示", MessageBoxButtons.OK);
        }

Answer 2

网上抄的//先请先引用:Microsoft.Office.Interop.Excel 11.0.0.0 . 
 #region 导出excel        private void ExportExcel(string fileName, DataGridView myDGV)
        {
            string saveFileName = "";
            //bool fileSaved = false;
            SaveFileDialog saveDialog = new SaveFileDialog();
            saveDialog.DefaultExt = "xls";
            saveDialog.Filter = "Excel文件|*.xls";
            saveDialog.FileName = fileName;
            saveDialog.ShowDialog();
            saveFileName = saveDialog.FileName;
            if (saveFileName.IndexOf(":") < 0) return; //被点了取消 
            Microsoft.Office.Interop.Excel.Application xlApp = new Microsoft.Office.Interop.Excel.Application();
            if (xlApp == null)
            {
                MessageBox.Show("无法创建Excel对象，可能您的机子未安装Excel");
                return;
            }            Microsoft.Office.Interop.Excel.Workbooks workbooks = xlApp.Workbooks;
            Microsoft.Office.Interop.Excel.Workbook workbook = workbooks.Add(Microsoft.Office.Interop.Excel.XlWBATemplate.xlWBATWorksheet);
            Microsoft.Office.Interop.Excel.Worksheet worksheet = (Microsoft.Office.Interop.Excel.Worksheet)workbook.Worksheets[1];//取得sheet1             //写入标题
            for (int i = 0; i < myDGV.ColumnCount; i++)
            {
                worksheet.Cells[1, i + 1] = myDGV.Columns[i].HeaderText;
            }
            //写入数值
            for (int r = 0; r < myDGV.Rows.Count; r++)
            {
                for (int i = 0; i < myDGV.ColumnCount; i++)
                {
                    worksheet.Cells[r + 2, i + 1] = myDGV.Rows[r].Cells[i].Value;
                }
                System.Windows.Forms.Application.DoEvents();
            }
            worksheet.Columns.EntireColumn.AutoFit();//列宽自适应
            //if (Microsoft.Office.Interop.cmbxType.Text != "Notification")
            //{
            //    Excel.Range rg = worksheet.get_Range(worksheet.Cells[2, 2], worksheet.Cells[ds.Tables[0].Rows.Count + 1, 2]);
            //    rg.NumberFormat = "00000000";
            //}            if (saveFileName != "")
            {
                try
                {
                    workbook.Saved = true;
                    workbook.SaveCopyAs(saveFileName);
                    //fileSaved = true;
                }
                catch (Exception ex)
                {
                    //fileSaved = false;
                    MessageBox.Show("导出文件时出错,文件可能正被打开！\n" + ex.Message);
                }            }
            //else
            //{
            //    fileSaved = false;
            //}
            xlApp.Quit();
            GC.Collect();//强行销毁 
            // if (fileSaved && System.IO.File.Exists(saveFileName)) System.Diagnostics.Process.Start(saveFileName); //打开EXCEL
            MessageBox.Show(fileName + "的简明资料保存成功", "提示", MessageBoxButtons.OK);
        }        #endregion

Answer 3

和ls重复了，那就再抄一个public void ToExcel(DataGridView dataGridView1)
        {
            try
            {
                //没有数据的话就不往下执行  
                if (dataGridView1.Rows.Count == 0)
                    return;
                //实例化一个Excel.Application对象  
                Microsoft.Office.Interop.Excel.Application excel = new Microsoft.Office.Interop.Excel.Application();                //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  
                excel.Visible = true;                //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  
                excel.Application.Workbooks.Add(true);
                //生成Excel中列头名称  
                for (int i = 0; i < dataGridView1.Columns.Count; i++)
                {
                    if (this.dataGridView1.Columns[i].Visible==true)
                    {
                        excel.Cells[1, i + 1] = dataGridView1.Columns[i].HeaderText;
                    }
                  
                }
                //把DataGridView当前页的数据保存在Excel中  
                for (int i = 0; i < dataGridView1.Rows.Count - 1; i++)
                {
                    System.Windows.Forms.Application.DoEvents();
                    for (int j = 0; j < dataGridView1.Columns.Count; j++)
                    {
                        if (this.dataGridView1.Columns[j].Visible==true)
                        {
                            if (dataGridView1[j, i].ValueType == typeof(string))
                            {
                                excel.Cells[i + 2, j + 1] = "'" + dataGridView1[j, i].Value.ToString();
                            }
                            else
                            {
                                excel.Cells[i + 2, j + 1] = dataGridView1[j, i].Value.ToString();
                            }
                        }
                       
                    }
                }                //设置禁止弹出保存和覆盖的询问提示框  
                excel.DisplayAlerts = false;
                excel.AlertBeforeOverwriting = false;                //保存工作簿  
                excel.Application.Workbooks.Add(true).Save();
                //保存excel文件  
                excel.Save("D:" + "\\KKHMD.xls");                //确保Excel进程关闭  
                excel.Quit();
                excel = null;
                GC.Collect();//如果不使用这条语句会导致excel进程无法正常退出，使用后正常退出
                MessageBox.Show(this,"文件已经成功导出！","信息提示");            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message, "错误提示");
            }        }

Answer 4

谢谢你，你的倒是能用，但是怎么提示  hresult  错误。这个怎么回事？