我想根据两个组合框选择在文本框中显示SQL服务器的一些内容 [英] I want to display some contents from SQL server in textbox as per the two combo box selection

问题描述

我真的需要帮助，我正在研究我的大学项目（基于语音的交通查询系统）。问题是我连接了我的组合框并从Db获取输入，现在我需要一个代码来验证这2个组合框并给出/填写2-3个文本框（combobox1 = From，Combobox2 = To，所以当我选择时并且我需要文本框来显示到达时间，地点之间的距离和公共汽车号/火车号等。）我在数据库中给出了



我尝试了什么：



i尝试在线搜索演示代码/示例以引用我没有。请尽快帮助

I really need help, im working on my college project(voice based transport enquiry system). the problem is i have connected my comboboxes and its taking the inputs from Db and now i need a code to validate those 2 comboboxes and give/fill in 2-3 text boxes(combobox1=From, Combobox2=To , so when i select from and to i need the text box to display time of arrival,distance between the places and bus no/train no. etc..) which i have given in the database

What I have tried:

i tried to search online for demo code/ examples to refer i got none. please help ASAP

推荐答案

对不起，我们不是来为你做功课。但是，以下是Google Gods的一些建议，可以帮助您入门：

* c＃winform从数据库中填充组合框 [ ^ ]

* c＃winform级联下拉列表 [ ^ ]

* c＃如何查询数据库 [ ^ ]

* c＃如何从数据库查询中填充文本框 [ ^ ]



您可能需要这样：

* 如何连接到sql server数据库 [ ^ ]

* 首先开始使用实体框架数据库 [ ^ ]

Sorry, but we are not here to do your homework for you. However, here are some suggestions from the Google Gods to get you started:
* c# winform populate combobox from a database[^]
* c# winform cascading dropdownlist[^]
* c# how to query a database[^]
* c# how populate textboxes from a database query[^]

You may need this to:
* how to connect to a sql server database[^]
* getting started with entity framework database first[^]

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