C#创建Excel文件并将数据导出到Excel文件的示例代码详解（图）

            string excelPath = AppDomain.CurrentDomain.BaseDirectory + "Excel" + DateTime.Now.Ticks + ".xlsx";
            if (System.IO.File.Exists(excelPath))
            {
                textBox1.Text += ("文件已经存在！");
                return;
            }

            try
            {
                //从资源中提取Excel文件
                System.IO.FileStream fs = new System.IO.FileStream(excelPath, FileMode.OpenOrCreate);
                fs.SetLength(0);
                fs.Write(Properties.Resources.Excel, 0, Properties.Resources.Excel.Length);
                fs.Close();
                fs.Dispose();
                textBox1.Text = "提取Excel文件成功！" + "\r\n";
            }
            catch (System.Exception ex)
            {
                excelPath = string.Empty;
                textBox1.Text += ("提取Excel文件失败：" + ex.Message);
                textBox1.Text += ("\r\n");
                Application.DoEvents();
                return;
            }

//定义OleDB连接字符串
            string strConn = "Provider=Microsoft.Ace.OleDb.12.0;Persist Security Info=False;" + "data source=" + @excelPath + ";
            Extended Properties='Excel 12.0; HDR=yes; IMEX=10'";
            OleDbConnection conn = new OleDbConnection();
            conn.ConnectionString = strConn;

                DataTable oleDt = conn.GetOleDbSchemaTable(OleDbSchemaGuid.Tables, null);
                dataGridView1.DataSource = oleDt;
                dataGridView1.Show();

                OleDbCommand cmd = null;
                try
                {
                    //向"Sheet1"表中插入几条数据,访问Excel的表的时候需要在表名后添加"$"符号,Insert语句可以不指定列名
                    cmd = new OleDbCommand("Insert Into [Sheet1$] Values('abc', 'bac', '0', '123456', 'test','测试','aa')", conn);//(A,B,C,D,E,F,G) 
                    cmd.ExecuteNonQuery();
                    cmd.ExecuteNonQuery();
                    cmd.ExecuteNonQuery();
                    cmd.ExecuteNonQuery();
                    cmd.ExecuteNonQuery();
                }
                catch (System.Exception ex)
                {
                    textBox1.Text += ("插入数据失败：" + ex.Message);
                    textBox1.Text += ("\r\n");
                }

                cmd = new OleDbCommand("Select * From [Sheet1$]", conn);
                OleDbDataAdapter adp = new OleDbDataAdapter(cmd);
                DataSet ds = new DataSet();
                adp.Fill(ds);
                dataGridView2.DataSource = ds.Tables[0];

                DataTable dt = conn.GetSchema();
                for (int i = 0; i < dt.Columns.Count; i++)
                {
                    textBox1.Text += dt.Columns[i].Caption;
                    if (i + 1 < dt.Columns.Count)
                    {
                        textBox1.Text += ",";
                    }
                }

                for (int j = 0; j < dt.Rows.Count; j++)
                {
                    for (int i = 0; i < dt.Columns.Count; i++)
                    {
                        if (dt.Rows[j][dt.Columns[i]] != null)
                        {
                            textBox1.Text += dt.Rows[j][dt.Columns[i]].ToString();
                        }
                        else
                        {
                            textBox1.Text += "null";
                        }

                        if (i + 1 < dt.Columns.Count)
                        {
                            textBox1.Text += ",";
                        }
                    }
                    textBox1.Text += ("\r\n");
                }

                if (conn.State != ConnectionState.Closed)
                {
                    try
                    {
                        conn.Close();
                    }
                    catch (System.Exception ex)
                    {
                        textBox1.Text += ("关闭Excel数据连接：" + ex.Message);
                        textBox1.Text += ("\r\n");
                    }
                }

System.Diagnostics.Process.Start("explorer.exe", AppDomain.CurrentDomain.BaseDirectory);