如何在标签的新派生 Class 中包含来自 StaticResource 的 StringFormat
How To Include StringFormat From StaticResource In The New Derived Class Of Label
我有这个XAML:
<Label Text="{Binding val1, StringFormat={StaticResource CommaInteger}}"/>
<Label Text="{Binding val2, StringFormat={StaticResource CommaInteger}}"/>
我想将其简化为:
<local:commaIntLbl Text="{Binding val1}"/>
<local:commaIntLbl Text="{Binding val2}"/>
我应该如何编写我的 commaIntLbl class 来实现这个?
public class commaIntLbl : Label
{
public commaIntLbl() : base()
{
SetDynamicResource(StyleProperty, "IntegerLabel");
// How to refer its Text's string-format to the StaticResource CommaInteger?
}
}
您可以像下面这样在 val1 属性 中设置字符串格式,然后进行绑定。
public string _val1;
public string val1
{
get
{
return string.Format("Hello, {0}", _val1);
}
set
{
_val1 = value;
}
}
更新:
Xaml:
<local:CommaIntLbl TextVal="{Binding val1}" />
自定义控件:
public class CommaIntLbl : Label
{
public CommaIntLbl() : base()
{ }
private string _text;
public string TextVal
{
get { return _text; }
set
{
_text = value;
OnPropertyChanged();
}
}
public static readonly BindableProperty TextValProperty = BindableProperty.Create(
nameof(TextVal),
typeof(string),
typeof(CommaIntLbl),
string.Empty,
propertyChanged: (bindable, oldValue, newValue) =>
{
var control = bindable as CommaIntLbl;
control.Text = String.Format("Hello, {0}", newValue);
});
}
后面的代码:
public string _val1;
public string val1 { get; set; }
public Page19()
{
InitializeComponent();
val1 = "1234";
this.BindingContext = this;
}
我有这个XAML:
<Label Text="{Binding val1, StringFormat={StaticResource CommaInteger}}"/>
<Label Text="{Binding val2, StringFormat={StaticResource CommaInteger}}"/>
我想将其简化为:
<local:commaIntLbl Text="{Binding val1}"/>
<local:commaIntLbl Text="{Binding val2}"/>
我应该如何编写我的 commaIntLbl class 来实现这个?
public class commaIntLbl : Label
{
public commaIntLbl() : base()
{
SetDynamicResource(StyleProperty, "IntegerLabel");
// How to refer its Text's string-format to the StaticResource CommaInteger?
}
}
您可以像下面这样在 val1 属性 中设置字符串格式,然后进行绑定。
public string _val1;
public string val1
{
get
{
return string.Format("Hello, {0}", _val1);
}
set
{
_val1 = value;
}
}
更新:
Xaml:
<local:CommaIntLbl TextVal="{Binding val1}" />
自定义控件:
public class CommaIntLbl : Label
{
public CommaIntLbl() : base()
{ }
private string _text;
public string TextVal
{
get { return _text; }
set
{
_text = value;
OnPropertyChanged();
}
}
public static readonly BindableProperty TextValProperty = BindableProperty.Create(
nameof(TextVal),
typeof(string),
typeof(CommaIntLbl),
string.Empty,
propertyChanged: (bindable, oldValue, newValue) =>
{
var control = bindable as CommaIntLbl;
control.Text = String.Format("Hello, {0}", newValue);
});
}
后面的代码:
public string _val1;
public string val1 { get; set; }
public Page19()
{
InitializeComponent();
val1 = "1234";
this.BindingContext = this;
}