如何将datagridview中的数据导出到Excel中(转)_一只奋斗的菜鸟的专栏

using System; 
using System.Collections.Generic; 
using System.Text; 
using System.Windows.Forms ; 
using System.IO; 

namespace OutputToExecl 
{ 
    public class ExportXLS 
    { 
        public ExportXLS() 
        { 
  
        } 
        public static 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"; 

             if (DialogResult.Cancel == saveFileDialog.ShowDialog())
            {
                return;
            }      
            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"; 
                        } 
                        tempStr += dataGridview1.Rows[j].Cells[k].Value.ToString();
                    } 
                    sw.WriteLine(tempStr); 
                } 
                sw.Close(); 
                myStream.Close(); 
            } 
            catch (Exception e) 
            { 
                MessageBox.Show(e.ToString()); 
            } 
            finally 
            { 
                sw.Close(); 
                myStream.Close(); 
            } 
        } 

    } 
} 

 
using System; 
using System.Collections.Generi