绑定列字段和模板列字段之间的区别 [英] Difference between Bound column field and template column field

问题描述

我想主要了解asp.net gridview中的绑定列字段和模板列字段.请帮助我.

I would like to know about bound column field and template column field in asp.net gridview mainly the difference. Please help me .

推荐答案

Boundfield 是直接绑定到数据源(数据库中的列)的列.

Boundfield is a column bound direct to the datasource (column in a DB).

< asp:TemplateField/> 是一个自定义列，可以包含这样的DB列，也可以将它们连接在一起以进行显示.

A <asp:TemplateField /> is a customized column which can contain either a DB column as such or you may join together columns for display.

使用 boundfield 仅显示db列，使用 TemplateField 进行更多操作，例如将2个db列连接为单个gridview列，或添加一些额外的文本/可能不是来自数据库的网格的描述/参数.

Use boundfield to simply display the db column, use TemplateField to do something more fancy such as concatenate 2 db columns as a single gridview column or add some extra text/description/para to the grid that may not come from the db.

让我们看看何时以及如何使用TemplateFields的一个基本示例.

Lets see one basic example of when and how to use TemplateFields.

我想在网格中有2列，代表数据库中的2列. FirstName 和 LastName ，因此GridView标记将具有::

I want to have 2 columns in my grid that represent 2 columns in the db. FirstName and LastName so the GridView markup will have::

<asp:BoundField DataField="FirstName"  />
<asp:BoundField DataField="LastName"  />

但是，如果要将它们连接在一起，则需要使用模板字段":这里 eval("FirstName") 被称为数据绑定表达式.

But if you want to concatenate them together you need to use Template Fields:: Here eval("FirstName") is called as the data binding expression.

 <asp:TemplateField HeaderText="FullName" >
      <ItemTemplate>
             eval("FirstName") + " " + eval("LastName")
      </ItemTemplate>
 </asp:TemplateField>

通常，在大多数情况下，当我们需要的不仅仅是开箱即用功能时，我们会使用模板列.

Usually and most of the time , we use a template column when we need more than out of the box functionality for the column.

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