晕,传的图片效果怎么这么差啊 重来....:using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Data; using System.Data.SqlClient; using System.Configuration;namespace DAL { public sealed class DataAccess { private static string connectionString = ConfigurationManager.ConnectionStrings["PersonConnectionString"].ConnectionString; public DataAccess() { } } } 报错说: 当前文件中不存在"ConfigurationManager"; 图片地址:http://b24.photo.store.qq.com/http_imgload.cgi?/rurl4_b=3c4794c1e9eddd58b8970f581fc7d437552d5738c4b6c36ce492b0381944a576dd6c2ac22952bc2c7e8f8654fc80b19994021e0425197f2d61f05c8ba2503a498b863a0b97f69e30d9b7bbe38808048fabd9fa4a&a=24&b=24
//数据库连接字符串(web.config来配置),可以动态更改connectionString支持多数据库. public static string connectionString = ConfigurationSettings.AppSettings["ConnectionString"].ToString();
要在项目中添加System.Configuration的引用
using System.Configuration; 明显引用了,但是报错,搞的我考试都考砸了 要进强化班
重来....:using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Data;
using System.Data.SqlClient;
using System.Configuration;namespace DAL
{
public sealed class DataAccess
{
private static string connectionString = ConfigurationManager.ConnectionStrings["PersonConnectionString"].ConnectionString;
public DataAccess()
{
}
}
}
报错说:
当前文件中不存在"ConfigurationManager";
图片地址:http://b24.photo.store.qq.com/http_imgload.cgi?/rurl4_b=3c4794c1e9eddd58b8970f581fc7d437552d5738c4b6c36ce492b0381944a576dd6c2ac22952bc2c7e8f8654fc80b19994021e0425197f2d61f05c8ba2503a498b863a0b97f69e30d9b7bbe38808048fabd9fa4a&a=24&b=24
public static string connectionString = ConfigurationSettings.AppSettings["ConnectionString"].ToString();
明显引用了,但是报错,搞的我考试都考砸了
要进强化班
我好像回想起当时的一点点的一点点的记忆了...