DevExpress的下拉框控件LookUpEdit的使用、添加item选项值、修改默认显示值

r囧r小猫 2023-10-11 13:42 11阅读 0赞

## 场景 ##

Winform控件-DevExpress18下载安装注册以及在VS中使用：

[https://blog.csdn.net/BADAO\_LIUMANG\_QIZHI/article/details/100061243][https_blog.csdn.net_BADAO_LIUMANG_QIZHI_article_details_100061243]

参照以上将DevExpress安装并引进到工具箱。

安装之后除了在工具箱中拖拽下拉框，怎样在代码中生成下拉框控件并对其绑定数据源。

注：

博客主页：  
[https://blog.csdn.net/badao\_liumang\_qizhi][https_blog.csdn.net_badao_liumang_qizhi]  
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## 实现 ##

生成下拉框控件

LookUpEdit typeSelect = new LookUpEdit();

控件属性设置

typeSelect.Width = Global.CHART_OPTION_WIDTH;
    typeSelect.Name = "typeSelectY" + yList[i].No;
    typeSelect.Location = new Point(20, Global.GROUP_VERTICAL_DISTANCE * 5 + radioGroupY.Height + minTextEditY.Height + maxTextEditY.Height + colorEditY.Height);

绑定数据源

List<string> list = new List<string>();
    list.Add("霸道");
    list.Add("流氓");
    list.Add("气质");
    typeSelect.Properties.DataSource = list;

这样设置后会显示如下，没有默认的选中值

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk_size_16_color_FFFFFF_t_70][]

修改默认的显示值

typeSelect.Properties.NullText = "霸道的程序猿";

下拉框赋值效果

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk_size_16_color_FFFFFF_t_70 1][]

[https_blog.csdn.net_BADAO_LIUMANG_QIZHI_article_details_100061243]: https://blog.csdn.net/BADAO_LIUMANG_QIZHI/article/details/100061243
[https_blog.csdn.net_badao_liumang_qizhi]: https://blog.csdn.net/badao_liumang_qizhi
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[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk_size_16_color_FFFFFF_t_70 1]: https://img-blog.csdnimg.cn/20191009163845321.jpg?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk=,size_16,color_FFFFFF,t_70