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C# TreeView.BeforeLabelEdit事件代码示例

本文整理汇总了C#中System.Windows.Forms.TreeView.BeforeLabelEdit事件的典型用法代码示例。如果您正苦于以下问题:C# TreeView.BeforeLabelEdit事件的具体用法?C# TreeView.BeforeLabelEdit怎么用?C# TreeView.BeforeLabelEdit使用的例子?那么恭喜您, 这里精选的事件代码示例或许可以为您提供帮助。您也可以进一步了解该事件所在System.Windows.Forms.TreeView的用法示例。


在下文中一共展示了TreeView.BeforeLabelEdit事件的2个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的C#代码示例。

示例1: InitializeTreeView

private void InitializeTreeView()
{

    // Construct the TreeView object.
    this.TreeView1 = new System.Windows.Forms.TreeView();

    // Set dock, location, size name, and tab order
    // values for the TreeView object.
    TreeView1.Dock = System.Windows.Forms.DockStyle.Left;
    TreeView1.Location = new System.Drawing.Point(0, 0);
    TreeView1.Name = "TreeView1";
    TreeView1.Size = new System.Drawing.Size(152, 266);
    TreeView1.TabIndex = 1;
    
    // Associate the event-handling methods with the
    // BeforeLabeEdit and the AfterSelect events.
    TreeView1.BeforeLabelEdit += 
        new NodeLabelEditEventHandler(TreeView1_BeforeLabelEdit);
    TreeView1.AfterSelect += 
        new TreeViewEventHandler(TreeView1_AfterSelect);

    // Set the LabelEdit property to true to allow the 
    // user to edit the TreeNode text.
    this.TreeView1.LabelEdit = true;

    // Declare and create objects needed to populate 
    // the TreeView.
    string[] files = new string[]{"bigPresentation.ppt", 
        "myFinances.xls", "myResume.doc"};; 
    string filePath = "c:\\myFiles";
    System.Collections.ArrayList nodes = 
        new System.Collections.ArrayList();

    // Create a node for each file, setting the Text property to the 
    // file's name and the Tag property to file's fully-qualified name.
    foreach ( string file in files )
    {
        TreeNode node = new TreeNode(file);
        node.Tag = filePath+"\\"+file;
        nodes.Add(node);
    }

    TreeNode[] treeNodes = new TreeNode[nodes.Count];
    nodes.CopyTo(treeNodes);

    // Create a new node named topNode and add the ArrayList of 
    // nodes to topNode.
    TreeNode topNode = new TreeNode("myFiles",  treeNodes);
    topNode.Tag = filePath;

    // Add topNode to the TreeView.
    TreeView1.Nodes.Add(topNode);

    // Add the TreeView to the form.
    this.Controls.Add(TreeView1);
}

private void TreeView1_BeforeLabelEdit(object sender, 
    NodeLabelEditEventArgs e)
{

    // Determine whether the user has selected the top node. If so,
    // change the CancelEdit property to true to cancel the edit.  
    if (e.Node == TreeView1.TopNode)

    {
        e.CancelEdit = true;
        MessageBox.Show("You are not allowed to edit the top node");
    }
}
开发者ID:.NET开发者,项目名称:System.Windows.Forms,代码行数:70,代码来源:TreeView.BeforeLabelEdit

示例2: TreeView1_AfterSelect

// Handle the After_Select event.
private void TreeView1_AfterSelect(System.Object sender, 
    System.Windows.Forms.TreeViewEventArgs e)
{

    // Vary the response depending on which TreeViewAction
    // triggered the event. 
    switch((e.Action))
    {
        case TreeViewAction.ByKeyboard:
            MessageBox.Show("You like the keyboard!");
            break;
        case TreeViewAction.ByMouse:
            MessageBox.Show("You like the mouse!");
            break;
    }
}
开发者ID:.NET开发者,项目名称:System.Windows.Forms,代码行数:17,代码来源:TreeView.BeforeLabelEdit


注:本文中的System.Windows.Forms.TreeView.BeforeLabelEdit事件示例由纯净天空整理自Github/MSDocs等开源代码及文档管理平台,相关代码片段筛选自各路编程大神贡献的开源项目,源码版权归原作者所有,传播和使用请参考对应项目的License;未经允许,请勿转载。