不说废话了，直接上图，高手勿喷，一直在忙，也没来得及弄，这个权限系统。

用到的表：

 四张表：用户登录，角色，系统信息，自动编号.

\'看了好多同学说出错，所以，我直接把项目文件上传上来。大家直接看项目文件就可以了。

 admin密码为:123

下载信息  [文件大小：   下载次数： ]

点击浏览该文件:权限维护.zip

此主题相关图片如下：t1.png

按照这个在狐表中建表。

然后做下面一个窗口：权限维护窗口.

此主题相关图片如下：t2.png

然后再做一个窗口：模块维护窗口。

此主题相关图片如下：t3.png

需要用的自定义函数：

1.Functions.Execute("add")函数参数2个。函数内容：

Dim nd As WinForm.TreeNode = args(0)
Dim dts As DataTable = args(1)
Dim drs As List(of DataRow)
drs = dts.Select("[父编号] = \'" & nd.Name & "\'")
For Each dr As DataRow In drs
    Dim cd As Winform.TreeNode = nd.Nodes.Add(dr("系统编号"),dr("功能模块"))
    Functions.Execute("Add",cd,dts)
Next

2.Functions.Execute("reflash"),参数1,函数内容：

Dim tr As WinForm.TreeView = args(0)
Dim nd As WinForm.TreeNode
Dim dts As DataTable = DataTables("系统信息")
Dim dm As DataRow
tr.StopRedraw()
tr.Nodes.Clear
tr.Nodes.Add("全部")
For Each dr As DataRow In dts.datarows
    If dr.IsNull("父编号") Then
        nd = tr.Nodes.Add(dr("系统编号"),dr("功能模块"))
        Functions.Execute("add",nd,dts)
    End If
Next
tr.ResumeRedraw()
If pw = True Then
    For Each nds As WinForm.TreeNode In tr.AllNodes
        nds.Checked = 权限集合.Contains(nds.Name)
    Next
End If
tr.ExpandAll

3.Functions.Execute("保存用户")参数1.函数内容：

Dim frm As winform.Form = args(0)
Dim users As WinForm.TextBox = frm.Controls("TextBox2")
Dim pass As WinForm.TextBox = frm.Controls("TextBox3")
Dim apass As WinForm.TextBox = frm.Controls("TextBox10")
Dim lb As WinForm.Label = frm.Controls("Label18")
Dim dtb As DataTable = DataTables("权限维护_table1")
Dim tbs As Table = Tables("权限维护_table1")
Dim drs As List(Of DataRow)
drs = dtb.Select("用户名 =\'" & users.value & "\'")
If drs.Count >1 Then
    MessageBox.Show("用户列表中用户名称重复,不能保存,请查询修改.")
    Return True
End If
If tbs.Current Is Nothing Then   
Else
    If tbs.Current.DataRow.RowState = DataRowState.Added Then
        If pass.value = "" Then
            lb.text = "密码不能为空!"
            Return True
        Else
            lb.text = "提示信息:"
        End If
        If pass.Value.Length <3 Then                   
           
           lb.Text = "提示信息:密码应该不小于3"
           Return True
        Else
           lb.text = "提示信息:"
        End If
        If pass.Value <> apass.Value Then
            lb.Text = "提示信息:重复密码不一致!"
           Return True
        Else
           lb.text = "提示信息:"
        End If       
        Dim jm As String =EncryptText(pass.Value,"lizhen","sq#")
        apass.Value = jm
        tbs.Current("密码") = jm
       
    ElseIf tbs.Current.DataRow.RowState = DataRowState.Modified Then
        If Apass.Value = "" Then
          tbs.Current("密码") =  tbs.Current.DataRow.OriginalValue("密码")
        ElseIf Apass.value > "" Then
            If apass.value <> pass.value Then
                tbs.Current("密码") =  tbs.Current.DataRow.OriginalValue("密码")
                lb.Text = "提示信息:重复密码不一致!"
               Return True
            Else
                 Dim jmp As String =EncryptText(pass.Value,"lizhen","sq#")
                apass.Value = jmp
                tbs.Current("密码") = jmp
                lb.Text = "提示信息:"
            End If
        End If
    End If
End If

\'MessageBox.Show(1)
pause = False

---------------------------------------------接下来继续说。

4.Functions.Execute("更新角色列表").参数1.函数内容：

Dim frm As WinForm.Form = args(0)
Dim cm As WinForm.ComboBox = frm.Controls("ComboBox2")
Dim cm1 As WinForm.ComboBox = frm.Controls("ComboBox4")
Dim lt As WinForm.ListBox = frm.Controls("ListBox1")
cm.DisplayMember = "角色名称"
cm.ValueMember = "角色编号"
cm.DataSource = "角色"
cm1.DisplayMember = "角色名称"
cm1.ValueMember = "角色编号"
cm1.DataSource = "角色"
lt.DisplayMember = "角色名称"
lt.ValueMember = "角色编号"
lt.DataSource = "角色"

5.Functions.Execute("权限分配") 参数2.函数内容

If _usergroup = "超级管理员" Then
    Return True
End If
\'___________超级管理员_____具备所有权限.
Functions.Execute("角色权限","[角色名称] = \'" & _usergroup & "\'")
\'_________________调用角色的权限集合__________________
Dim frm As String = args(0) \'窗口名字.
Dim vl As String = args(1) \'子功能模块.
\'MessageBox.Show(权限集合.count)
Dim tbs As DataTable = DataTables("系统信息")
Dim fl As String
fl = "[功能模块] = \'" & frm & "窗口 \' and [父编号] is null"
Dim dm As DataRow = tbs.Find(fl)
\'____________以上调用窗口名字,并查找出功能模块的系统编号_________________
If vl = "" Then
    If 权限集合.Contains(dm("系统编号")) Then
        Return True
    End If
\'_____________判断子功能模块名称是否为空,如果为空,则继续执行_____________
Else   
    fl = "[父编号] = \'" & dm("系统编号") & "\' and [功能模块] =\'" & args(1) & "\'"
  \'  MessageBox.Show(fl)
   Dim dn As DataRow = tbs.Find(fl)
    \'MessageBox.Show(dn("系统编号"))
    If 权限集合.Contains(dn("系统编号")) Then
        Return True
    End If
\'_______________________查询出父编号之后.在查询功能编号.________________
End If

6.Functions.Execute("权限窗口检查")参数4.

Dim tn As String = args(0) \'表名
Dim lb As String = args(1) \' 提示信息名
Dim tx As String = args(2) \'提示信息内容
Dim cl As String = args(3) \'操作的列名
Dim js As Table = Tables(tn)
Dim ts As WinForm.Label = Forms("权限维护").Controls(lb)
For Each dm As DataRow In DataTables(tn).DataRows
    If dm(cl) = "" Then
        ts.text = tx
        Return Nothing
    Else
        ts.text = "提示信息:"
    End If
Next
js.AddNew()
Forms("权限维护").Controls("TextBox9").value = ""
Forms("权限维护").Controls("TextBox10").value = ""

7.Functions.Execute("目录树_载入")

Dim tr As WinForm.TreeView = args(0)
Dim a As String = args(1)
Dim b As String = args(2)
Dim dts As DataTable = DataTables("角色")
tr.StopRedraw
tr.Nodes.Clear
For Each ds As DataRow In dts.DataRows
    tr.Nodes.Add(ds("角色编号"),ds("角色名称"))
Next
tr.ResumeRedraw
Functions.Execute("更新角色列表",Forms("权限维护"))

8.Functions.Execute("窗口加载")

Dim frm As winform.Form = args(0)
Select Case frm.Name
    Case "权限维护"
        Functions.Execute("reflash",frm.Controls("TreeView1"),DataTables("系统信息"))
        Functions.Execute("目录树_载入",frm.Controls("TreeView2"),"角色","角色名称")       
        Dim 用户编辑 As WinForm.Panel = frm.Controls("用户编辑")
        Dim 用户分组 As WinForm.GroupBox = frm.Controls("用户分组")       
        Dim 角色查看 As WinForm.GroupBox = frm.Controls("角色查看")
        Dim btdel As WinForm.Button = frm.Controls("Button3")
        Dim 角色编辑 As WinForm.Panel = frm.Controls("角色编辑")
        btdel.Enabled = Functions.Execute("权限分配",frm.Name,"用户编辑")
        用户分组.Enabled = Functions.Execute("权限分配",frm.Name,"用户查看")
        用户编辑.Enabled = Functions.Execute("权限分配",frm.Name,"用户编辑")
        角色查看.Enabled = Functions.Execute("权限分配",frm.Name,"角色查看")
        角色查看.Enabled = Functions.Execute("权限分配",frm.Name,"角色编辑")
       
        Return Nothing
    Case ""
End Select

--------------------------------------------------接下来继续说。

9。Functions.Execute("编码")

10.Functions.Execute("角色操作")

Dim 角色名称 As String = args(0)
Dim 系统编号 As String = args(1)
Dim px As Boolean = args(2)
Dim dm As DataRow
Dim Arys() As String
Dim lv As String
Functions.Execute("角色权限","角色编号 = \'" & 角色名称 & "\'")
Select Case px
    Case True
        If 权限集合.Contains(系统编号) Then
        Else
            权限集合.Add(系统编号)
        End If
    Case False
        If 权限集合.Contains(系统编号) Then
            权限集合.Remove(系统编号)
        End If
End Select
Arys = 权限集合.ToArray()
lv = String.Join(",",Arys)
dm= DataTables("角色").Find("角色编号 = \'" & 角色名称 & "\'")
dm("系统编号") = lv

11.Functions.Execute("角色权限")

Dim fl As String = args(0)
Dim dm As DataRow = DataTables("角色").Find(fl)
Dim m As String = dm("系统编号")
Dim k() As String = m.Split(",")
For i As Integer = 权限集合.count -1 To 0 Step -1
    权限集合.RemoveAt(i)
Next
\'清除权限集合中的数据.
\'MessageBox.Show(k.Length)
\'If k.Length > 1 Then
    权限集合.AddRange(k)
\'End If
\'Return 权限集合

12.Functions.Execute("角色目录树复选")

Dim frm As WinForm.Form = args(0)
Dim tr As WinForm.TreeView = frm.Controls("TreeView2")
Dim 角色名称 As WinForm.Label = frm.Controls("角色名称")
Select Case tr.SelectedNode.Checked
    Case True
        For Each nds As WinForm.TreeNode In tr.AllNodes
            \'dm=dts.Find("系统编号 = \'" & nds.Name & "\'")
            If nds.Name <> tr.SelectedNode.Name Then
                nds.Checked = False
            End If
        Next
            \'MessageBox.Show(3)
            角色名称.Text = tr.SelectedNode.Name
          \'  MessageBox.Show(tr.SelectedNode.Name)
            Functions.Execute("角色权限","[角色编号] = \'" & tr.SelectedNode.Name & "\'")
            pw = True
            Functions.Execute("reflash",frm.Controls("TreeView1"))
            pw = False
    Case False
End Select

\'-------------------------------所有函数已经列举完毕。下面继续。

下面是项目的设置：

AfterOpenProject 事件。

server = "server"
Lists = "list"

\'------------

全局代码定义。

Public pause As Boolean
Public pw As Boolean \'权限状态
Public _UserName As String \'用户名
Public dt As DataTable \'临时表定义.
Public server As String  \'外部数据源
Public Lists As String  \'外部数据源
Public 权限集合 As New List(Of String)
‘------------------------下面是窗口

1.编码窗口:

函数调用判断是:Functions.Execute("权限分配",窗口名称,控件名称) 返回值为布尔值。

关键的地方是权限模块的增加：其中目录树的0层是窗口名称，1层是窗口内控件名称。

然后就可以调用了。

好了。权限控制已经完成。。

 这个文件是开发板窗口。