用遞歸 Private Sub Expandnodes(ByVal node As Microsoft.Web.UI.WebControls.TreeNode, ByVal Expand As Boolean) Dim n As Microsoft.Web.UI.WebControls.TreeNode For Each n In node.Nodes If n.Nodes.Count > 0 Then n.Expanded = Expand Expandnodes(n, Expand) End If Next End Sub Private Sub Expandnodes(ByVal treeview As Microsoft.Web.UI.WebControls.TreeView, ByVal Expand As Boolean) Dim n As Microsoft.Web.UI.WebControls.TreeNode For Each n In treeview.Nodes If n.Nodes.Count > 0 Then n.Expanded = Expand Expandnodes(n, Expand) End If Next End Sub 調用時Expandnodes(Me.TreeView1, True)可展開全部節點,Expandnodes(Me.TreeView1, False)可折疊全部節點.
ljmay168(軍)的程序不错,我借用了下,改成C#版如下: public void Expandnodes(Microsoft.Web.UI.WebControls.TreeNode node,bool Expand) { foreach(Microsoft.Web.UI.WebControls.TreeNode n in node.Nodes) { if(n.Nodes.Count>0) { n.Expanded = Expand; Expandnodes(n, Expand); } } } public void Expandnodes(Microsoft.Web.UI.WebControls.TreeView treeview, bool Expand) { foreach(Microsoft.Web.UI.WebControls.TreeNode n in treeview.Nodes) { if(n.Nodes.Count>0) { n.Expanded = Expand; Expandnodes(n, Expand); } } }Expandnodes(Me.TreeView1, true)展开全部节点,Expandnodes(Me.TreeView1, false)折叠全部节点
既然是bool型的干嘛要写两个 写一个就够了呀 public void Expandnodes(Microsoft.Web.UI.WebControls.TreeView treeview, bool Expand) { foreach (Microsoft.Web.UI.WebControls.TreeNode n in treeview.Nodes) { if (n.Nodes.Count > 0) { n.Expanded = Expand; Expandnodes(n, Expand); } } }
Private Sub Expandnodes(ByVal node As Microsoft.Web.UI.WebControls.TreeNode, ByVal Expand As Boolean)
Dim n As Microsoft.Web.UI.WebControls.TreeNode
For Each n In node.Nodes
If n.Nodes.Count > 0 Then
n.Expanded = Expand
Expandnodes(n, Expand)
End If
Next
End Sub Private Sub Expandnodes(ByVal treeview As Microsoft.Web.UI.WebControls.TreeView, ByVal Expand As Boolean)
Dim n As Microsoft.Web.UI.WebControls.TreeNode
For Each n In treeview.Nodes
If n.Nodes.Count > 0 Then
n.Expanded = Expand
Expandnodes(n, Expand)
End If
Next
End Sub
調用時Expandnodes(Me.TreeView1, True)可展開全部節點,Expandnodes(Me.TreeView1, False)可折疊全部節點.
public void Expandnodes(Microsoft.Web.UI.WebControls.TreeNode node,bool Expand)
{
foreach(Microsoft.Web.UI.WebControls.TreeNode n in node.Nodes)
{
if(n.Nodes.Count>0)
{
n.Expanded = Expand;
Expandnodes(n, Expand);
}
}
}
public void Expandnodes(Microsoft.Web.UI.WebControls.TreeView treeview, bool Expand)
{
foreach(Microsoft.Web.UI.WebControls.TreeNode n in treeview.Nodes)
{
if(n.Nodes.Count>0)
{
n.Expanded = Expand;
Expandnodes(n, Expand);
}
}
}Expandnodes(Me.TreeView1, true)展开全部节点,Expandnodes(Me.TreeView1, false)折叠全部节点
既然是bool型的干嘛要写两个 写一个就够了呀 public void Expandnodes(Microsoft.Web.UI.WebControls.TreeView treeview, bool Expand)
{
foreach (Microsoft.Web.UI.WebControls.TreeNode n in treeview.Nodes)
{
if (n.Nodes.Count > 0)
{
n.Expanded = Expand;
Expandnodes(n, Expand);
}
}
}