/// <summary>
/// 根据TreeView选中结点的全路径设置选中结点
/// </summary>
/// <param name="tree">当前的树</param>
/// <param name="fullPath">全路径[@"Earth/Assi/Yindu/jiazi2"]</param>
/// <returns>设置成功返回true,失败返回false</returns>
public static bool SetSelectedNodeByFullPath(TreeView tree, string fullPath)
{
string[] paths = fullPath.Split('/');
TreeNode selectedNode = null;
if (paths.Length == 0)
{
throw new Exception(string.Format("全路径{0}不是合法的TreeView选中结点全路径", fullPath));
}
for (int i = 0; i < tree.Nodes.Count; i++)
{
if (!tree.Nodes[i].Text.Equals(paths[0]))
{
continue;
}
//此处第二个参数传入固定值1，是因为这儿的for循环对应的路径索引为0,所以下一层的值为从1开始
selectedNode = TreeViewZ.FindSelectedNode(paths, 1, tree.Nodes[i]);
if (selectedNode != null)
{
tree.SelectedNode = selectedNode;
return(true);
}
else
{
continue;
}
}
return(false);
}
/// <summary>
/// 递归展开结点
/// </summary>
/// <param name="treeNodes">TreeView.TreeNodeCollection</param>
/// <param name="currentDepth">当前已展开的深度</param>
/// <param name="depth">要展开的深度</param>
private static void ExpandDepth(TreeNodeCollection treeNodes, int currentDepth, int depth)
{
if (currentDepth > depth)
{
return;
}
foreach (TreeNode node in treeNodes)
{
node.Expand();
TreeViewZ.ExpandDepth(node.Nodes, ++currentDepth, depth);
currentDepth--;
}
}
/// <summary>
/// 递归查找选中项结点
/// </summary>
/// <param name="paths">路径集合</param>
/// <param name="index">当前路径索引</param>
/// <param name="parentNode">父级节点</param>
/// <returns>找到的选中节点</returns>
private static TreeNode FindSelectedNode(string[] paths, int index, TreeNode parentNode)
{
for (int i = 0; i < parentNode.Nodes.Count; i++)
{
if (parentNode.Nodes[i].Text == paths[index])
{
index++;
if (parentNode.Nodes[i].Nodes.Count > 0 && paths.Length > index)
{
return(TreeViewZ.FindSelectedNode(paths, index, parentNode.Nodes[i]));
}
else if (parentNode.Nodes[i].Nodes.Count == 0 && paths.Length == index)
{
return(parentNode.Nodes[i]);
}
else
{
return(null);
}
}
}
return(null);
}
/// <summary>
/// 展开树深度
/// </summary>
/// <param name="tree">当前的树</param>
/// <param name="depth">要展开的深度</param>
public static void ExpandDepth(TreeView tree, int depth)
{
TreeViewZ.ExpandDepth(tree.Nodes, 0, depth - 1);
}
