想实现 的功能是在TREEVIEW下实现添加节点的功能，但是添加的节点内容不能是数字和空格，我应该怎么加入判断呢？以下是我的代码
  private void button1_Click(object sender, EventArgs e)
        {
           
            
                if (!myTreeNode.IsEditing)
                {
                    TreeNode node = new TreeNode();
                    node.Text ="";
                    //this.treeView1.Nodes.Add(node);

                    //node.BeginEdit();
                    if (myTreeNode.Level < 3)
                    {
                        myTreeNode.Nodes.Add(node);
                        myTreeNode.Expand();
                        node.BeginEdit();
                       
                    }
                    else
                        MessageBox.Show( "最多只能添加3层！");
                  

                }
}

我的邮箱是weikl1986@

[[it] 本帖最后由 wkl1986 于 2008-7-31 21:20 编辑 [/it]]