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Description, detailed introduction and usage of asp.net Repeater control_PHP tutorial
- WBOYOriginal
- 2016-07-21 15:38:54927browse
The Repeater control does not have built-in rendering capabilities, which means that the user must provide a layout for the Repeater control by creating a template. When the page runs, the Repeater control steps through the records in the data source, rendering an item for each record.
It is very simple and not powerful enough to use, but as the old saying goes, you can’t kill a chicken with a bull’s knife. If you don’t use a bull’s knife, what’s the point? Can’t we kill the chicken? And we use it in daily life. We often face this choice. Suppose we display complex data, we can use gridview, and generally use DataList for complex data. What about simple data presentation? We use Repeater because it is simple, compact, and most importantly, flexible.
As we said above, it does not have built-in presentation function, so we have to use some templates to achieve its data presentation. By the way, when it comes to presentation, I have to say more. It does not give you the function of adding static items. In other words, it only deals with the database, and ordinary people will not talk to you.
The following table describes the templates supported by the Repeater control.
Template Property Description
ItemTemplate
Contains HTML elements and controls that are rendered once for each data item in the data source.
AlternatingItemTemplate
Contains HTML elements and controls that are rendered once for each data item in the data source. In general, you can use this template to create a different appearance for alternating items, such as specifying a different background color than the one specified in the ItemTemplate.
HeaderTemplate and FooterTemplate
Contain text and controls that are rendered at the beginning and end of the list respectively.
SeparatorTemplate
Contains the elements rendered between each item. A typical example might be a straight line (using the hr element).
We define the format in these templates, and when the web page is presented, it will be more beautiful. Of course, if you make it ugly, it will not be beautiful.
In addition, the Item template must be defined
If the Repeater control does not specify a data source, it will not be displayed. If there is no data in the specified data source, the header and foot templates will continue to be displayed.
The main points we want to talk about about this control are the following
1. Understand several templates of this control
2. Simple and practical Repeater control to realize data reading and presentation.
3. Realize the nested use of the control
4. Realize data paging (I previously posted on my blog that the control is used for paging outside the repeater, but it always feels unsightly. This time we put the paging in the footer. in the template to make the control more beautiful)
5. Let our data entries become links. Only in this way will he be complete.