Question

C# treeview 加号（减号）只让控件打开或者关闭节点，不让触发NodeMouseClick事件

我做的winForm，当我点击加号（减号）时，它确实就进入NodeMouseClick事件了

Answer 1

点加号,减号的时候,本来就不触发NodeMouseClick事件的..只有当点击Node时,才有可能触发到Node的展开折叠事件..

代码中添加 e.Cancel可以取消本次NodeMouseClick事件

Answer 2

private void tvList_NodeMouseClick(object sender, TreeNodeMouseClickEventArgs e)
{
if (e.Button == MouseButtons.Left)
{
bIsRightClick = false;
}
else if (e.Button == MouseButtons.Right)
{
bIsRightClick = true;
}
//下面这一句是重点，当点击前面的+-时e.X<e.Node.Bounds.X
if (e.X>e.Node.Bounds.X)
{
tvList.SelectedNode = e.Node;
selectedNode = e.Node;
pathNow = new DirectoryInfo(e.Node.Tag.ToString());
if (pathNow.Extension.ToUpper() == ".DWG")
{
NowFile = pathNow;
tvList.ContextMenuStrip = RightMenuFile;
if (!bIsRightClick)
{
if (isFolderClick)
{
InputBlock();
}
blockViewer.LoadDwg(pathNow.FullName);
}
}
else
{
if (!bIsRightClick)
{
Expand(selectedNode);
}
tvList.ContextMenuStrip = RightMenuFolder;
InputImage();
lblFolderName.Visible = true;
tbFolderName.Visible = true;
}
SetImage(root);
}
}

Answer 3

是不是想实现点击加减号实现展开收缩，不触发单击事件，而单击文字时触发单击事件？
这种情况还是不要用NodeMouseClick事件，用 AfterSelect 事件就可以实现