Asp.net下拉列表DataValuefield和datatextfields [英] Asp.net Drop Down List DataValuefield and datatextfields

问题描述

我的页面上有一个DropDownList控件，

我将同时绑定DataValueField和DataTextFiled.

例如:员工详细信息，

数据值字段= 1
数据文本字段="ABCD"

我希望dropdownlist中的文本显示如下

"1-ABCD"

我也想从此下拉列表中选择数据值字段"

上面的示例中多数民众赞成在1

我该怎么做


请帮助

I have a DropDownList Control in my page,

i am binding both DataValueField and DataTextFiled to it.

For example: Employee details,

Data value Field =1
Data Text Field ="ABCD"

i want the text in dropdownlist will show like this

"1-ABCD"

and also i want to select the Data Value Field from this dropdownlist

thats 1 in above example

How can i do this


Please help

推荐答案

希望您会找到答案
合并要在下拉列表中显示的两个字段

Hope you will find the answer
Concatenate Two Fields to Display in Dropdown List

要么创建一个自定义对象，要么从查询本身获取文本字段值为"1-ABCD".

目前，您似乎是一个初学者，请尝试使用Query方法.提取数据时，请串联ID和Text字段，然后在绑定时将此字段用作datatextfield.

样本:

Either create a custom object or get the textfield value as ''1 - ABCD'' from query itself.

For now, it looks like you are a beginner, try the Query way. When fetching the data, concatenate the ID and Text field and then use this field as the datatextfield while binding.

Sample:

SELECT 
  ID, TextF, (ID + '-' + TextF) AS IDTEXTF
FROM
  MyTable

mydropdown.Datasource = myFetchedDataTable;
mydropdown.DataValueField = "ID";
mydropdown.DataTextField = "IDTEXTF";
mydropdown.Databind();

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