测试文章代码看不见的问题

1.MySql连接

  <connectionStrings>
  <add name="mysql" connectionString="server=localhost;port=3306;user id=zzzili;password=zzzili123;database=zzzili;CharSet=gb2312;" providerName="MySql.Data.MySqlClient"/>
  </connectionStrings>
private string mysqlYunfeng = System.Configuration.ConfigurationManager.ConnectionStrings["mysql"].ConnectionString;

2.数据操作

using (MySqlDataReader dr = MySqlHelper.ExecuteReader(mysqlYunfeng, sql))
{

if (dr.HasRows == true)
{
while (dr.Read())
{
if (dr[0].ToString() == "Logo")
{
node.LogoVersion = dr[1].ToString();
}
else if (dr[0].ToString() == "City")
{
node.CityVersion = dr[1].ToString();
}
}
}
}

MySqlParameter[] paras = new MySqlParameter[4];
paras[0] = new MySqlParameter("@stuNum",stuNum);
paras[1] = new MySqlParameter("@answer",answer);
paras[2] = new MySqlParameter("@score",score);
paras[3] = new MySqlParameter("@exid",ex_id);

3.Json序列化

//JavaScriptSerializer类在System.Web.Extensions.dll中，注意添加这个引用
JavaScriptSerializer serializer = new JavaScriptSerializer();
//JSON序列化
string result = serializer.Serialize(node);

4.Request.QueryString[""].ToString();

5.输出调试信息

System.Diagnostics.Debug.WriteLine(returnStr);

6.sql中的判断

select  case when a>b  then a
when b>c then b
esle c   end
from table_name
where ...

7.web Table写入Excel

protected void Button1_Click(object sender, EventArgs e)
{
BndTableList(this.txtTime.Text, null);
StringBuilder tstr = new StringBuilder();
foreach (TableRow row in Table1.Rows)
{
foreach (TableCell cell in row.Cells)
{
tstr.AppendFormat("{0}	",cell.Text);
}
tstr.Append("\r\n");
}
WriteFile(tstr.ToString());
}

private void WriteFile(string str)
{
System.IO.File.WriteAllText("C:\\upload\\aaa.xls", str, Encoding.UTF8);
}