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    tpblog

    asp.net的外文教程8

    Application state is held by a collection of shared user-defined variables. These are set and initialized when the Application_OnStart event fires on the loading of the first instance of the application and are available until the last instance exits. Application state variables are accessed using the Applications collection, which provides a wrapper for the application state. Application state variables are identified by name.

    Server-side session state is held by a collection of user-defined session variables that are persistent during a user session. These variables, accessed using the Session collection, are unique to each session instance. The variables can be set to be automatically destroyed after a defined time of inactivity even if the session does not end. Client-side user session is maintained by either a cookie or by encoding the session ID in the URL itself.
    ASP.NET supports three modes of persistence for server-side session variables:[12]

    In-Process Mode
        The session variables are maintained within the ASP.NET process. This is the fastest ; however, in this mode the variables are destroyed when the ASP.NET process is recycled or shut down.
    ASPState Mode
        ASP.NET runs a separate Windows service that maintains the state variables. Because state management happens outside the ASP.NET process, and because the ASP.NET engine accesses data using .NET Remoting, ASPState is slower than In-Process. This mode allows an ASP.NET application to be load-balanced and scaled across . Because the state management service runs independently of ASP.NET, the session variables can persist across ASP.NET process shutdowns. However, since session state server runs as one instance, it is still one point of failure for session state. The session-state service cannot be load-balanced, and there are restrictions on types that can be stored in a session variable.
    SqlServer Mode
        State variables are stored in a database, allowing session variables to be persisted across ASP.NET process shutdowns. The main advantage of this mode is that it allows the application to balance load on a server cluster, sharing sessions between servers. This is the slowest method of session state management in ASP.NET.

    A painting should accentuate the details when necessary. For example, paint details on , or grass may be important in the area around the deer, but the remaining trees and foliage in your paint works best if the leaves more vague. The Sun Patch dapple around the outlet should be brighter. An occasional directional shape of a limb or a tree can help direct the eyes of viewers in the region. Here are 4 tips to help you attract people to your paintings. 1. Use contrasting values ​​in the area of ​​interest. They will immediately draw the attention of viewers. This is especially true if you use a very dark shade next to . 2. How to use color in the area of ​​interest is most important. Select a special color that you intend to use here. No matter how much or how little you use it, do not use it anywhere else in the paint. Also, always use more luster in the focal point. Remember, the colors that have their additions placed next to them are convincing to the eye, so use adjacent full whenever possible. 3. Directional forms work well, but still use them in moderation. Give this plenty of thought beforehand in the planning stage. if the forms of leadership are overexploited, your painting will become a ho-hum, instead of . An example of the forms of leadership are trees, limbs, stems, rivers, roads, houses, roofs, buildings, signs, fences, and angle of almost all or line that can indicate the direction. 4. Use less detail and softer edges in the area outside the focal point. Paint the sharper edges and details in it. In conclusion, special attention to how you paint your focal area. This should be the area most intriguing of .

    If you focus on the use of color, crisp edges and soft, the contrasting values, and forms of management, then you will have a more compelling. Challenge yourself to study and learn, and you will create your masterpiece. The main thing, continue painting.

    posted on 2012-06-07 14:45 tpblog 閱讀(124) 評論(0)  編輯  收藏

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