4.winforms基本操作-将datagridview内容保存为excel文件2024-10-06

5.winforms基本操作-在表格内添加多选框列2024-10-22

这里记录一下将winforms展示的datagridview，导出或保存为excel文件。

这里说一下环境、版本信息：
win系统：win11
框架：winforms
依赖：Microsoft.Office.Interop.Excel
.net：8.0.401
.net framework: 4.8

DataGridView对象为dataGridView1，然后添加一个按钮，绑定事件btnConfirm即可。

private void btnConfirm(object sender, EventArgs e)
{
    Microsoft.Office.Interop.Excel.Application excelApp = new Microsoft.Office.Interop.Excel.Application();
    if (excelApp == null)
    {
        MessageBox.Show("无法创建Excel，您可能需要安装Excel");
        return;
    }

    // 创建excel工作薄
    Workbook workBook = excelApp.Workbooks.Add(Type.Missing);
    Worksheet workSheet = null;

    // 创建工作表
    workSheet = workBook.Sheets["Sheet1"];
    workSheet = workBook.ActiveSheet;

    // 表头
    Range headerRow = workSheet.Rows[1];
    headerRow.Cells[1, 1] = "文件路径";
    headerRow.Cells[1, 2] = "文件名";
    // 表头格式
    headerRow.Font.Bold = true;
    headerRow.Interior.Color = ColorTranslator.ToOle(Color.LightBlue);


    // 将DataGridView表格内数据复制到excel工作表
    for (int i = 0; i < dataGridView1.Rows.Count; i++)
    {
        for (int j = 0; j < dataGridView1.Columns.Count; j++)
        {
            workSheet.Cells[i + 2, j + 1] = dataGridView1.Rows[i].Cells[j].Value;
        }
    }

    // 导出到excel文件
    SaveFileDialog saveFileDialog = new SaveFileDialog();
    saveFileDialog.Filter = "Excel Workbook (*.xlsx)|*.xlsx|Excel 97-2003 Workbook (*.xls)|*.xls";
    saveFileDialog.Title = "保存文件名称到Excel";
    saveFileDialog.ShowDialog();

    if (saveFileDialog.FileName != "")
    {
        try
        {
            workBook.SaveAs(saveFileDialog.FileName);
            workBook.Close(false);
            excelApp.Quit();

            System.Runtime.InteropServices.Marshal.ReleaseComObject(workSheet);
            System.Runtime.InteropServices.Marshal.ReleaseComObject(workBook);
            System.Runtime.InteropServices.Marshal.ReleaseComObject(excelApp);

            workSheet = null;
            workBook = null;
            excelApp = null;

            MessageBox.Show("Excel文件已保存到：" + saveFileDialog.FileName);

        }
        catch (Exception ex)
        {
            MessageBox.Show("保存文件名称到Excel失败，请稍后重试。" + ex.Message);
        }
    }
}