机房重构特色功能之导出Excle

前言：在做机房收费系统的时候一定需要的特色功能就是导出Excel

相信一定有很多小伙伴正为此烦恼
这里小编就帮助一下正在烦恼的小伙伴们提供一点思路

 public void ideriverexcel(string name,DataGridView dataGridView1)
        {
    
    
            int colCount =dataGridView1 .Columns.GetColumnCount(DataGridViewElementStates.Visible);
            int rowCount =dataGridView1 .Rows.GetRowCount(DataGridViewElementStates.Visible);

            string fileName = "";

            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，您的电脑可能未安装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 < dataGridView1.ColumnCount; i++)

            {
    
     worksheet.Cells[1, i + 1] = dataGridView1.Columns[i].HeaderText; }

            //写入数值

            for (int r = 0; r < dataGridView1.Rows.Count; r++)

            {
    
    
                for (int i = 0; i < dataGridView1.ColumnCount; i++)

                {
    
    

                    worksheet.Cells[r + 2, i + 1] = dataGridView1.Rows[r].Cells[i].Value;

                }

                System.Windows.Forms.Application.DoEvents();

            }

            worksheet.Columns.EntireColumn.AutoFit();//列宽自适应

            MessageBox.Show(fileName + "资料保存成功", "提示", MessageBoxButtons.OK);

            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);

                }

            }

            xlApp.Quit();

            GC.Collect();//强行销毁           }
        }
    }

重要提示！ 对于这种重复性高 重要且繁琐的功能一定要封装成一个类 方便在之后直接调用