FrameworkElement.MinWidth Property


获取或设置元素的最小宽度约束。Gets or sets the minimum width constraint of the element.

 property double MinWidth { double get(); void set(double value); };
[System.Windows.Localizability(System.Windows.LocalizationCategory.None, Readability=System.Windows.Readability.Unreadable)]
public double MinWidth { get; set; }
member this.MinWidth : double with get, set
Public Property MinWidth As Double

Property Value


元素的最小宽度,单位是 与设备无关的单位(每个单位 1/96 英寸)device-independent units (1/96th inch per unit)The minimum width of the element, in 与设备无关的单位(每个单位 1/96 英寸)device-independent units (1/96th inch per unit). 默认值为 0.0。The default value is 0.0. 该值可以是等于或大于 0.0 的任何值。This value can be any value equal to or greater than 0.0. 但是,PositiveInfinity 无效,NaN 也无效。However, PositiveInfinity is not valid, nor is NaN.



这是 FrameworkElement 中指定宽度信息的三个属性之一。This is one of three properties on FrameworkElement that specify width information. 另外两个 WidthMaxWidthThe other two are Width and MaxWidth. 如果这两个值之间存在冲突,则必须先执行实际的宽度确定的应用程序顺序,然后 MaxWidth,最后,如果其中每个 MinWidth 都在界限内,WidthIf there is a conflict between these values, the order of application for actual width determination is first MinWidth must be honored, then MaxWidth, and finally if each of these are within bounds, Width.

Double 值的值限制由 ValidateValueCallback 机制强制执行。The value restrictions on the Double value are enforced by a ValidateValueCallback mechanism. 如果尝试设置一个无效值,则会引发运行时异常。If you attempt to set an invalid value, a run-time exception is thrown.

XAML 特性用法XAML Attribute Usage

<object MinWidth="double"/>  


<object MinWidth="qualifiedDouble"/>  



大于或等于 0.0 Double 值的字符串表示形式。String representation of a Double value equal to or greater than 0.0. 这被解释为 与设备无关的单位(1/96 英寸)device-independent unit (1/96th inch) 度量。This is interpreted as a 与设备无关的单位(1/96 英寸)device-independent unit (1/96th inch) measurement. 字符串不需要显式包含小数点。Strings need not explicitly include decimal points. 例如,1 的值是可接受的。For instance a value of 1 is acceptable.

"属性值" 一节中提到的 Double 范围限制相同。The same Double range restrictions as mentioned in the Property Value section apply.

如上所述的双精度值,后跟以下单元声明字符串之一: pxincm``ptA double value as described above, followed by one of the following unit declaration strings: px, in, cm, pt.

px (默认值)为 与设备无关的单位(每个单位 1/96 英寸)device-independent units (1/96th inch per unit)px (default) is 与设备无关的单位(每个单位 1/96 英寸)device-independent units (1/96th inch per unit)

in 为英寸;1in = = 96pxin is inches; 1in==96px

cm 是厘米;1cm = = (96/2.54) pxcm is centimeters; 1cm==(96/2.54) px

pt 为点;1pt = = (96/72) pxpt is points; 1pt==(96/72) px

依赖项属性信息Dependency Property Information

标识符字段Identifier field MinWidthProperty
元数据属性设置为 trueMetadata properties set to true AffectsMeasure

Applies to