C# 把DataGridView中的信息导出到EXcel

Question

因客户需要，他不想直接在EXCEL中操作。因为 字段实在太多。 然后我要用C# winform做一个小软件 功能是 把字段设定好。然后 在里头对号输入。。比如 卡好字段  姓名 年龄 像填表一样 直接把文本都填近去就是了。然后button把输入进去的东西 导出成EXCEL表
 我想问的是不经过数据库能实现么？具体怎么实现？是用DataGridView 还是别的什么？

Answer 1

完全可以，只要你遍历得到你的数据，然后循环写到EXCLE里
http://www.yongfa365.com/Item/DataGridViewToExcel.html

Answer 2

其实DataGridView 也是后台数据库，你可以把DataGridView 对应的数据库导出来就可以了 private void leadToExcel()//导出为excel
    {
        System.Web.HttpContext.Current.Response.ClearHeaders();           //导出EXCEL
        Response.Clear();
        Response.Buffer = true;
        Response.Charset = "UTF8";//"GB2312";
        Response.AppendHeader("Content-Disposition", "attachment;filename=Sheet1.xls");
        // 如果设置为 GetEncoding("GB2312");导出的文件将会出现乱码！！！
        Response.ContentEncoding = System.Text.Encoding.UTF8;
        //Response.ContentEncoding = System.Text.Encoding.GetEncoding("GB2312");  
        
        Response.ContentType = "application/ms-excel";//设置输出文件类型为excel文件。 0
        System.IO.StringWriter oStringWriter = new System.IO.StringWriter();
        System.Web.UI.HtmlTextWriter oHtmlTextWriter = new System.Web.UI.HtmlTextWriter(oStringWriter);
        this.GridView1.RenderControl(oHtmlTextWriter);
        Response.Output.Write(oStringWriter.ToString());
        Response.Flush();
        Response.End();
    }

Answer 3

 /// <summary>
        /// 导出
        /// </summary>
        /// <param name="dataGridview1"></param>
        public void ExportDataGridViewToExcel(DataGridView dataGridview1)
        {
            SaveFileDialog saveFileDialog = new SaveFileDialog();
            saveFileDialog.Filter = "Execl  files  (*.xls)|*.xls";
            saveFileDialog.FilterIndex = 0;
            saveFileDialog.RestoreDirectory = true;
            saveFileDialog.CreatePrompt = true;
     
                saveFileDialog.Title = "导出Excel文件到";            DateTime now = DateTime.Now;
            saveFileDialog.FileName = now.Year.ToString().PadLeft(2) + now.Month.ToString().PadLeft(2, '0') + now.Day.ToString().PadLeft(2, '0') + "-" + now.Hour.ToString().PadLeft(2, '0') + now.Minute.ToString().PadLeft(2, '0') + now.Second.ToString().PadLeft(2, '0');
             if (saveFileDialog.ShowDialog() == DialogResult.OK)
            {            Stream myStream;
            myStream = saveFileDialog.OpenFile();
            StreamWriter sw = new StreamWriter(myStream, System.Text.Encoding.GetEncoding("gb2312"));
            string str = "";
            try
            {
                //写标题    
                for (int i = 0; i < dataGridview1.ColumnCount; i++)
                {
                    if (i > 0)
                    {
                        str += "\t";
                    }
                    str += dataGridview1.Columns[i].HeaderText;
                }
                sw.WriteLine(str);
                //写内容 
                for (int j = 0; j < dataGridview1.Rows.Count; j++)
                {
                    string tempStr = "";
                    for (int k = 0; k < dataGridview1.Columns.Count; k++)
                    {
                        if (k > 0)
                        {
                            tempStr += "\t";
                        }
                        if (dataGridview1.Rows[j].Cells[k].Value != null)
                        {
                           
                            tempStr += dataGridview1.Rows[j].Cells[k].Value.ToString();
                        }
                    }
                    sw.WriteLine(tempStr);
                }
                sw.Close();
                myStream.Close();
                MessageBox.Show("导出成功");
            }
            catch (Exception e)
            {
                MessageBox.Show(e.ToString());
            }
            finally
            {
                sw.Close();
                myStream.Close();
            }
        }
        else
        {
            MessageBox.Show("您已经取消了打印");
        }
        }方法很好用  给分吧 

Answer 4

楼上的貌似不是很明白啊  DataGridview怎么可能是后太数据库呢？
DataGridview只是数据的展示 属于UI层的。楼主可以将DataGridview的DataSource放到Excel里面就可以了，没有必要通过数据库，而且没有理由要通过数据库

Answer 5

可以把DataGridview 换成datatable  明白原理什么都好做。

Answer 6

怎么个换法没看明白 换成datatable

Answer 7

DataGridview.DataTable[0] 是第一个