在基于Windows的应用程序中从数据库中检索数据的组合框 [英] combo box that retrieve data from database in windows based application

问题描述

大家好，

我必须填充从基于Windows的应用程序中的数据库中检索数据的组合框。我有两个类型和CD的表。类型具有类型ID和类别。 CD具有类型ID作为外键。当我要添加新CD时，用户的用户界面将显示组合框以从组合框中选择类别，并且所选值应保存为类型ID。


首先，我在类型数据集中做了一个采石场，它将按类型ID进行搜索。


现在，我不知道如何使用这种方法填充CD界面中的类别组合框。


任何志愿帮我。

解决方案

我不清楚你的问题。请简化它。


i想要从表中保存一个类型ID，从列表中选择相应的catagory。


plz指定你的问题。


尝试

i我不清楚您的问题。请简化它。


i想要从表中保存一个类型ID，从列表中选择相应的catagory。


plz指定你的问题。


尝试

我想你要从表中保存一个类型id，你选择了相应的catagory从列表中。


这就是我的意思。你理解正确

首先将类别从类型表绑定到组合框。


从catagory = combobox.text <表中选择typeid br />
将typeid分配给变量。

将typeid（变量）插入cd表。


试试吧现在

Hi all,

I have to populate combo box that retrieve data from database in windows based application. I have two tables which are type and CD. Type has type ID and Category. CD has type ID as foreign key. When I will add a new CD, the user interface for user will show combo box to choose the category from combo box and the selected value should be saved as type ID.

First, I did a quarry in type dataset that will do search by type ID.

Now, I don?t know how to use this method to populate the category combo box in CD interface.


Any volunteer to help me.

解决方案

i am not clear with your problem. please simplify it.

i think you want to save a type id from the table which corresponding catagory you are selected from the list.

plz specify your question.

try

i am not clear with your problem. please simplify it.

i think you want to save a type id from the table which corresponding catagory you are selected from the list.

plz specify your question.

try

i think you want to save a type id from the table which corresponding catagory you are selected from the list.


This is what I mean. You understand correctly

first bind the category from the type table to combobox.

select the typeid from the table where catagory= combobox.text
assign the typeid to a variable.

insert the typeid(variable) into cd table.

try it now

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