获取或设置按钮 id。
命名空间： Microsoft.SharePoint.WebControls
程序集： Microsoft.SharePoint（位于 Microsoft.SharePoint.dll 中）
语法
声明
Public Overridable Property ButtonID As String
Get
Set
用法
Dim instance As FormButton
Dim value As String
value = instance.ButtonID
instance.ButtonID = value
public virtual string ButtonID { get; set; }