如何使用 Unity 容器通过 XML 配置字典? 这有效:
<register type="System.Collections.Generic.Dictionary[string,int]" >
<constructor>
<param name="capacity">
<value value="10" />
</param>
</constructor>
</register>
但我需要能够在 XML 配置中添加元素。
最佳答案
上次我尝试这样做时,我不得不使用自定义转换器并为字典值发明我自己的解析器。我不记得是哪项研究让我到达那里的,但这是注册和相应的转换器类。
<type type="IRequestPolicy" mapTo="RequestPolicyCatalog, Assembly">
<constructor>
<param name="dictionary" type="System.Collections.Generic.KeyValuePair`2[System.Int32,System.String][], mscorlib">
<array>
<value value="1, 'unauthorized'" typeConverter="Assembly.IntStringKeyValueConverter, fore.Core"/>
<value value="2, 'activation'" typeConverter="Assembly.IntStringKeyValueConverter, Quofore.Core"/>
<value value="3, 'routing'" typeConverter="Assembly.IntStringKeyValueConverter, Quofore.Core"/>
</array>
</param>
</constructor>
</type>
public class IntStringKeyValueConverter : System.ComponentModel.TypeConverter {
public override object ConvertTo(System.ComponentModel.ITypeDescriptorContext context, System.Globalization.CultureInfo culture, object value, Type destinationType) {
return this.ConvertFrom(context, culture, value);
}
public override bool CanConvertFrom(System.ComponentModel.ITypeDescriptorContext context, Type sourceType) {
return sourceType == typeof(string);
}
public override bool CanConvertTo(System.ComponentModel.ITypeDescriptorContext context, Type destinationType) {
return destinationType == typeof(KeyValuePair<int, string>);
}
public override object ConvertFrom(System.ComponentModel.ITypeDescriptorContext context, System.Globalization.CultureInfo culture, object value) {
var comma = ((string)value).IndexOf(',');
if(comma < 0)
throw new InvalidOperationException("Invalid string, must contain ',' between values");
var number = int.Parse(((string)value).Substring(0, comma));
var str = ((string)value).Substring(comma).Trim(new[] { ',', '\'', ' ' });
return new KeyValuePair<int, string>(number, str);
}
}
关于xml - 通过 XML 统一配置字典,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/5154315/