[英]Access to environment variables by xaml code
It is possible to access somehow ONLY via xaml code to an environment variable? 是否可以通过xaml代码仅以某种方式访问环境变量? In my case, I only need the read access.
就我而言,我只需要读取权限。
You can write a custom markup extension. 您可以编写自定义标记扩展。 Something like:
就像是:
[MarkupExtensionReturnType(typeof(String))]
public class EnvironmentVarExtension : MarkupExtension
{
private string _variableName;
public EnvironmentVarExtension(string variableName)
{
_variableName = variableName;
}
public override object ProvideValue(IServiceProvider serviceProvider)
{
return Environment.GetEnvironmentVariable(VariableName);
}
[ConstructorArgument("variableName")]
public string VariableName
{
get { return _variableName; }
set { _variableName = value; }
}
}
And use it in your XAML: 并在您的XAML中使用它:
<Grid>
<TextBlock Text="{local:EnvironmentVar Path}" />
</Grid>
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