将my.settings绑定到DataGridView的最佳方法,因此最终用户可以修改?
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14-11-2019 - |
题
如何将DataGridView DataInd查看到My.Settings(用户范围)属性,以便用户可以编辑值?这必须是DataGridView。我知道我们可以用文本框等形式绑定到my.settings等,但在这种情况下,我们只需要它作为DataGridView中的可编辑字符串列表。 当然,一些my.settings条目可以具有不同的数据类型,这些数据类型使重要的数据库复杂化,但通常我们只使用字符串和布尔值。
此外,让我们假设用户了解他必须输入字符串“true”以将布尔设置为true。无需复选框列。
这是我们使用的(并且它有效),只是寻找更好,更精简的方式:
这是类:
Public Class MySettingsMaint
.
...
然后我们有一个绑定列表(这可能是Yuk):
Private list As BindingList(Of BindingKeyValuePair)
.
这是DataGridView绑定到的:
Public ReadOnly Property DataSource() As Object
Get
list = New BindingList(Of BindingKeyValuePair)
list.Add(New BindingKeyValuePair("PhoneExtension", My.Settings.PhoneExtension.ToString.ToLower))
list.Add(New BindingKeyValuePair("PhonePIN", My.Settings.PhonePIN.ToString.ToLower))
list.Add(New BindingKeyValuePair("PhoneEnabled", My.Settings.PhoneEnabled.ToString.ToLower))
Return From k In list Order By k.Key
Return list
End Get
End Property
.
...
Public Sub LoadGrid(ByVal grd As DataGridView) Implements
/some stuff here to create two DataGridViewColumns
/one bound to Key, the other bound to Setting
End Sub
.
在这里,要保存回我的yuk:
Public Sub Save() Implements IMaintainable.Save
My.Settings.PhoneExtension = (From x As BindingKeyValuePair In list Where x.Key = "PhoneExtension" Select x.Value.ToLower).ToList(0)
My.Settings.PhonePIN = (From x As BindingKeyValuePair In list Where x.Key = "PhonePIN" Select x.Value.ToLower).ToList(0)
My.Settings.PhoneEnabled = (From x As BindingKeyValuePair In list Where x.Key = "PhoneEnabled" Select x.Value.ToLower).ToList(0) = "true"
My.Settings.Save()
End Sub
.
上述类所需的私人类:
Private Class BindingKeyValuePair
Sub New(ByVal k As String, ByVal v As String)
Key = k
Value = v
End Sub
Private _Key As String
Public Property Key() As String
/basic getsetter
End Property
Private _Value As String
Public Property Value() As String
/basic getsetter
End Property
End Class
. 解决方案
You should use the PropertyGrid control? It will help with regard to supporting richer property types.
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