寻求C# 的ado.net访问数据库的实例
谢谢
我刚学，还不会

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SqlConnection conn = new SqlConnection( "server=192.168.1.26;uid=sa;pwd=;database=pubs; ");
conn.Open();
SqlDataAdapter da = new SqlDataAdapter( "select au_id, au_lname, au_fname from authors order by au_id ", conn);
DataSet ds = new DataSet();
da.Fill(ds);
this.ListBox1.DataSource = ds.Tables[0].DefaultView;
this.ListBox1.DataTextField= "au_lname ";
this.ListBox1.DataValueField= "au_id ";
this.ListBox1.DataBind();
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别忘了这个
using System.Data.SqlClient;
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你在csdn的搜索 中搜索ado.net 已经有很多类似的帖子了。
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Web.config文件中
<add key= "CONNECTIONSTRING " value= "user id=SYS;data source=XXGL;password=SYS "> </add>

aspx.cs文件中
using System.Data.OracleClient;

OracleConnection MyConnection=new OracleConnection();
DataSet ds=new DataSet();
MyConnection.ConnectionString=System.Configuration.ConfigurationSettings.AppSettings[ "SQLCONNECTIONSTRING "].ToString();
MyConnection.Open();
OracleDataAdapter dr=new OracleDataAdapter( "select * from XXJCB ",MyConnection);
dr.Fill(ds);
MyConnection.Close();

以上代码针对oracle
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对，多搜点电子书看，或者去买本入门书，最好带光盘的，哈哈
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sqlhelper

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关注
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using System.Data.SqlClient;
连接字符串最好写在Config文件中；
<configuration>
<appSettings>
<add key= "SQLCONNECTIONSTRING " value= "data source=.;uid=sa;pwd=sa;database=NorthWind "> </add>
</appSettings>
</configuration>

取连接串的时候记得
using System.Configuration;

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SqlConnection myConnection = new SqlConnection(ConfigurationSettings.AppSettings[ "SQLCONNECTIONSTRING "].ToString());