/// <summary>
/// 演示数据访问、Cache、日志记录（参数化Sql语句）
/// </summary>
/// <param name="param"></param>
/// <returns></returns>
public static string DB_Cache_Exception(int param)
{
try
{
string cacheName = "CahceName_" + param.ToString();
object o = CacheMan.GetData(CacheMan.HighCache, cacheName);
if (o == null)
{
Database db = DB.Reader; // 只读帐户
DbCommand cmd = db.GetSqlStringCommand("SELECT COUNT(*) FROM TableName WHERE Param = @Param");
db.AddInParameter(cmd, "@Param", DbType.Int32, param);
o = db.ExecuteScalar(cmd);
if (o != null)
CacheMan.GenCache(CacheMan.HighCache, 720, cacheName, CacheMan.CachePriority.High, o);
else
return "";
}
return o.ToString();
}
catch (Exception ex)
{
HandleException.LogException(ex);
return "";
}
}
public static int WriteByParam(string a, string b)
{
Database db = DB.Writer;
// 可读写帐户
DbCommand cmd = db.GetSqlStringCommand("INSERT INTO TableName(a, b) VALUE(@a, @b)");
db.AddInParameter(cmd, "@a", DbType.String, a);
db.AddInParameter(cmd, "@b", DbType.String, b);
return db.ExecuteNonQuery(cmd);
}