如何使用DataTable绑定ComboBox [英] how to bind ComboBox with DataTable

问题描述

我的DataTable有以下列：

I have the DataTable with following columns:

id，Name，Description，ParentId

id, Name, Description, ParentId

喜欢创建一个WPF控件（.NET 4.0框架），它实现一个组合框，它显示绑定到id值的名字。因此，当用户选择组合框中显示的名称时，后面的逻辑必须检索其id值。

and would like to create a WPF control (.NET 4.0 framework) which implements a combobox which displays the names which are bound to values of id. So when the user selects a name displayed in the combobox the behind logic has to retrieve its id value.

如果有人可以显示出这样的做法，我将非常感谢

I would be very thankful if anyone could show the way of doing the described above.

推荐答案

像这样：

在你的XAML文件，put：

In your XAML file, put:

 <ComboBox x:Name="myComboBox" DisplayMemberPath="Name" SelectedValuePath="id" />

在你的代码背后，放：

myComboBox.ItemsSource = myTable;

（myTable是您提到的表的引用）

(myTable being a reference to the table you mentioned)

然后您可以使用以下表达式达到组合框中当前所选人员的ID：

Then you can reach the id of the currently selected person in the combo box using the expression:

NameComboBox.SelectedValue

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