1、读取Excel数据并写入到SQLServer数据库中; 2、将SQLServer数据库中的数据写入到Excel表中; 以下部分程序代码: public void printAll(DataGridView dgv) { try { SaveFileDialog saveFileDialog = new SaveFileDialog(); saveFileDialog.Filter = "导出Excel (*.xlsx)|*.xlsx"; saveFileDialog.FilterIndex = 0; saveFileDialog.RestoreDirectory = true; saveFileDialog.CreatePrompt = true; saveFileDialog.Title = "导出文件保存路径"; saveFileDialog.ShowDialog(); string strName = saveFileDialog.FileName; if (strName.Length != 0) { //没有数据的话就不往下执行 if (dgv.Rows.Count...