VS Bring Ajax and GridView

As shown, there is an AJAX expansion in the tool linked fields after creating a new web window

ScriptManager

There is only one in the entire web, especially in the master page and user controls,

For example, when you nest master pages and user controls, add ScriptManager only to the outer layers.

UpdatePanel

Use to hold the content that needs to be displayed in an abnormal step

UpdateProgress

Used to put the content of Beforesend in Ajax

Timer

To place the code for a certain period of time.

The self-timer of the clock. Set the interval to execute once per second as 1000ms

Give the label a value in the Tick event of the timer

Note: You must place the timer in the UpdatePanel

The effect is as follows:

(not finished ...)

VS Bring Ajax and GridView