摘要：
using Microsoft.Win32;using System;using System.Collections.Generic;using System.Configuration;using System.Data;using System.Data.SqlClient;using Sys... 阅读全文
摘要：
private void button5_Click(object sender, EventArgs e) { string 价格编号 = txtnum.Text; if (价格编号!= "" || 价格编号=="") ... 阅读全文
摘要：
using System;using System.Collections.Generic;using System.Text;using System.Data.SqlClient;using System.Configuration;using System.Data;namespace 收费系... 阅读全文
摘要：
//app.config //contentusing System;using System.Collections.Generic;using System.Configuration;using System.Data;using System.... 阅读全文