限制数字输入vb属性网格 [英] Restrict numeric input vb property grid

问题描述

我有一个变量，只能设置为某些数字（整数和小数），并由用户使用属性网格分配。我想要的是像Enum那样的行为，用户可以从可接受的值的下拉列表中进行选择。但是枚举不支持非整数数字输入。任何想法？

解决方案

完成取得/设置，只有在超出可接受的范围内才能更改值。

 < DataMember（）> 
< DisplayName（鱼眼角度）> 
<说明（此值表示鱼眼视图中使用的角度，如果启用，可接受范围为45至360度，默认值为180度。）> 
< DefaultValue（180）> 
公共财产FisheyeAngle As Double 
获取
返回_FisheyeAngle 
结束Get 
 Set（value As Double）
如果value< 45然后
 _FisheyeAngle = 45 
 ElseIf value> 360然后
 _FisheyeAngle = 360 
 Else 
 _FisheyeAngle = value 
结束如果
结束集
结束属性
  

I have a variable that can only be set to certain numbers (integers and decimals) and that gets assigned by the user using a property grid. What I want is something that behaves like an Enum, where the users can select from a a drop down list of acceptable values. However enums don't see to support non integer numeric input. Any ideas?

解决方案

Ended up doing get/set and just changing the value if it's outside the acceptable range.

<DataMember()>
<DisplayName("Fisheye Angle")>
<Description("This value indicates the angle used in the fisheye view, if it is enabled.  The acceptable range is 45 to 360 degrees with 180 degrees being the default. ")>
<DefaultValue(180)>
Public Property FisheyeAngle As Double
    Get
        Return _FisheyeAngle
    End Get
    Set(value As Double)
        If value < 45 Then
            _FisheyeAngle = 45
        ElseIf value > 360 Then
            _FisheyeAngle = 360
        Else
            _FisheyeAngle = value
        End If
    End Set
End Property

这篇关于限制数字输入vb属性网格的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！