winform中DataGridView的數據實現導出excel

1,窗體設計

 

首先需要引入程序集：Microsoft.Office.Interop.Excel  （如果沒有引用過的需要右鍵添加引用再搜索就行了）

 

實現的方法：

     /// <summary>
        /// 
        /// </summary>
        /// <param name="fileName">文件路徑</param>
        /// <param name="myDGV">控件DataGridView</param>
        private void ExportExcels(string fileName, DataGridView myDGV)
        {
            string saveFileName = "";
            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; //被點了取消
            Microsoft.Office.Interop.Excel.Application xlApp = new Microsoft.Office.Interop.Excel.Application();
            if (xlApp == null)
            {
                MessageBox.Show("無法創建Excel對象，可能您的機子未安裝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
            //寫入標題
            for (int i = 0; i < myDGV.ColumnCount; i++)
            {
                worksheet.Cells[1, i + 1] = myDGV.Columns[i].HeaderText;
            }
            //寫入數值
            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();//列寬自適應
            if (saveFileName != "")
            {
                try
                {
                    workbook.Saved = true;
                    workbook.SaveCopyAs(saveFileName);
                }
                catch (Exception ex)
                {
                    MessageBox.Show("導出文件時出錯,文件可能正被打開！\n" + ex.Message);
                }
            }
            xlApp.Quit();
            GC.Collect();//強行銷毀
            MessageBox.Show("文件： " + fileName + ".xls 保存成功", "信息提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
        }

　點擊按鈕調用

        private void button1_Click(object sender, EventArgs e)
        {
            string a = "D:" + "\\KKHMD.xls";
            ExportExcels(a, dataGridView1);
        }

　　完成截圖