如何根据XML属性创建数据模板

如何根据XML属性创建数据模板

本文介绍了如何根据XML属性创建数据模板?的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!

问题描述

我正在编写一个WPF接口,读取XML文件并显示数据。 XML文件将是这样的:

 < People> 
< Person Gender =Male>
< Name> Joe< / Name>
< / Person>
< Person Gender =Female>
< Name> Susan< / Name>
< / Person>
< / People>

我需要一个取决于Person的Gender属性的数据模板。此数据模板用于列表框项目。列表框的来源是People。

 < DataTemplate DataType =Person [@ Gender ='Male']> 
< / DataTemplate>
< DataTemplate DataType =Person [@ Gender ='Female']>
< / DataTemplate>

我以为这会像上面的代码一样,但不行。任何想法?



谢谢!



ANSWER

以下是上述XML示例的DataTemplateSelector:

  public class MyDataTemplateSelector:DataTemplateSelector 
{
private DataTemplate _MaleTemplate = null;
private DataTemplate _FemaleTemplate = null;

public DataTemplate MaleTemplate
{
get {return _MaleTemplate; }
set {_MaleTemplate = value; }
}
public DataTemplate FemaleTemplate
{
get {return _FemaleTemplate; }
set {_FemaleTemplate = value;
}

public override DataTemplate SelectTemplate(object item,DependencyObject container)
{
XmlElement currentNode =(XmlElement)item;
DataTemplate selectedTemplate = null;
string selectedGender =;

selectedGender = currentNode.GetAttribute(Gender);

开关(selectedGender)
{
caseMale:
selectedTemplate = _MaleTemplate;
break;

case女:
selectedTemplate = _FemaleTemplate;
break;

默认值:
break;
}

return selectedTemplate;
}
}

感谢您的帮助!我希望这对其他人也是有用的!

解决方案

您需要使用 DataTemplateSelector 。 WPF博士的表明了这一点完全是你正在寻找的。

I'm working on a WPF interface that reads an XML file and displays the data. The XML file would be something like this:

<People>
    <Person Gender="Male">
        <Name>Joe</Name>
    </Person>
    <Person Gender="Female">
        <Name>Susan</Name>
    </Person>
</People>

I need a data template dependent on the Gender attribute of Person. This data template is for list box items. the source of the listbox is People.

<DataTemplate DataType="Person[@Gender='Male']">
</DataTemplate>
<DataTemplate DataType="Person[@Gender='Female']">
</DataTemplate>

I thought it would be something like the above line of code, but it doesn't work. Any ideas?

Thanks!

ANSWER
Here's the DataTemplateSelector for the above XML example:

public class MyDataTemplateSelector : DataTemplateSelector
{
    private DataTemplate _MaleTemplate = null;
    private DataTemplate _FemaleTemplate = null;

    public DataTemplate MaleTemplate
    {
        get { return _MaleTemplate; }
        set { _MaleTemplate = value; }
    }
    public DataTemplate FemaleTemplate
    {
        get { return _FemaleTemplate; }
        set { _FemaleTemplate = value; }
    }

    public override DataTemplate SelectTemplate(object item, DependencyObject container)
    {
        XmlElement currentNode = (XmlElement)item;
        DataTemplate selectedTemplate = null;
        string selectedGender = "";

        selectedGender = currentNode.GetAttribute("Gender");

        switch (selectedGender)
        {
            case "Male":
                selectedTemplate = _MaleTemplate;
                break;

            case "Female":
                selectedTemplate = _FemaleTemplate;
                break;

            default:
                break;
        }

        return selectedTemplate;
    }
}

Thanks for the help! I hope this will be useful to someone else as well!

解决方案

You need to use a DataTemplateSelector. This article by Dr. WPF demonstrates it completely and is just what you are looking for.

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08-22 13:21