问题描述
- 明明Treeview1有很多节点,但是跟踪代码却只有1个节点,为什么?
-
请各位大神帮忙,确定TREEVIEW1里面有很多节点,treeview1.nodes.count只有1个? Private Sub Button7_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button7.Click
mycn.ConnectionString = "Data Source=" & ControlC.TextBox2.Text & ";Initial Catalog=blue;uid=maseru;pwd=Wks123"
Dim i As Integer
For i = 1 To TreeView1.Nodes.Count - 1
Dim k1 As String = TreeView1.Nodes(i).Name
Dim TF As Boolean
If TreeView1.Nodes(i).Checked = True Then
TF = "1"
Else
TF = "0"
End If
Dim mycom As New SqlClient.SqlCommand
mycom.CommandText = "update PrivilegeUser set puTF =" & TF & " where puRID ='" & TextBox1.Text & "' and puPriID ='" & k1 & "' "
mycom.Connection = mycn
Try
mycn.Open()
Dim mysqlreader As Data.SqlClient.SqlDataReader = mycom.ExecuteReader
mycom.ExecuteNonQuery()Catch ex As Exception End Try Next End Sub
解决方案
你需要用递归去遍历每一级节点,他的节点数不是指的所有的,而是这一级上的节点数
解决方案二:
@bdmh谢谢你快速,准确的回答。我明白你的意思了。
另外,我用如下方法也是不行。 请问你有类似代码吗?
Dim tn as treenode
For each tn in Treeview1.nodes
这里插入上面的代码 。。。
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时间: 2024-07-28 13:33:18