DataGridView中的数据导入Excel

 

 //保存的Excel
        public bool SaveExcel(DataGridView girdView, bool isShowExcle)
        {
            if (girdView.Rows.Count == 0)  //判断数据是否等于0
                return false;

            //创建 Excel 对象
            Excel.Application excel = new Microsoft.Office.Interop.Excel.Application();
            excel.Application.Workbooks.Add(true);
            excel.Visible = isShowExcle;

            //生成字段名称(列名)
            for (int i = 0; i < dataGridView1.ColumnCount - 1; i++)
            {
                excel.Cells[1, i + 1] = girdView.Columns[i].HeaderText;
            }

            //填充数据
            for (int i = 0; i < girdView.RowCount - 1; i++)
            {
                for (int j = 0; j < girdView.ColumnCount; j++)
                {
                    //判断类型是否是字符串
                    if (girdView[j, i].ValueType == typeof(string))
                        excel.Cells[i + 2, j + 1] = "'" + girdView[j, i].Value.ToString();
                    else
                        excel.Cells[i + 2, j + 1] = girdView[j, i].Value;
                }
            }
            return true;
        }
完善上一种方式：
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"; 

            saveFileDialog.ShowDialog(); 

            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(); 
            } 
            catch (Exception e) 
            { 
                MessageBox.Show(e.ToString()); 
            } 
            finally 
            { 
                sw.Close(); 
                myStream.Close(); 
            } 
        }