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private SqlConnection con = new new SqlConnection(
System.Configuration.ConfigurationManager.AppSettings["YXPath"]);
public void Open()
{
if (con.State == ConnectionState.Closed)
{
con.Open();
}
}
public void Close()
{
// 下面这行与上一楼中不一样
if (con.State != ConnectionState.Closed)
{
con.Close();
}
}
private SqlConnection con = new new SqlConnection(System.Configuration.ConfigurationManager.AppSettings["YXPath"]);
public void Open()
{
if (con.State == ConnectionState.Closed)
{
con.Open();
}
}
public void Close()
{
if (con.State == ConnectionState.Open)
{
con.Close();
}
}
<appSettings>
<add key="YXPath" value="server=.;Pooling=true;uid=**;pwd=**;Trusted_Connection=no;database=**"/>
</appSettings>