如何将字符串添加到组合框值 [英] How To add String to Combobox Values

问题描述

 cmbPurNo.DataSource = dt; 
 cmbPurNo.ValueMember =   PSettingId; 
 cmbPurNo.DisplayMember =   value; 

这里的价值是

 2 
 3 
 4 

bt如何增加价值

 GP2 
 DC3 
 TIN4 

请帮我

解决方案

将信息添加到你的收藏中dt

更改您的查询：

  SELECT  PSettingId，[value]，[value] + CAST（ PSettingId  AS   VARCHAR （ 30 ））< span class =code-keyword> AS  DisplayName 

用法：

 cmbPurNo.DataSource = dt; 
 cmbPurNo.ValueMember =   PSettingId; 
 cmbPurNo.DisplayMember =   DisplayName; 

我会在查询中执行此操作。连接要一起显示的两列，然后将它们作为数据源分配给下拉列表。

cmbPurNo.DataSource = dt;
cmbPurNo.ValueMember = "PSettingId";
cmbPurNo.DisplayMember = "value";

here values are

2
3
4

bt how to add value to like

GP2
DC3
TIN4

pls help me

解决方案

Add the information to your collection dt

Change your query:

SELECT PSettingId, [value] , [value] + CAST(PSettingId AS VARCHAR(30)) AS  DisplayName

Usage:

cmbPurNo.DataSource = dt;
cmbPurNo.ValueMember = "PSettingId";
cmbPurNo.DisplayMember = "DisplayName";

I would do this in the query. Concatenate the two columns you want to show together and then assign them as the datasource to the dropdown.

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