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通过键盘方向键控制TreeView节点的移动

2010-04-21 16:19:32| 分类：程序源码 | 标签： |举报 |字号大中小订阅

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#region "控制树节点移动,向左右下上"

/// <summary>

/// 通过Ctrl+键盘移动选定的树节点

/// </summary>

/// <param name="TreeView1">要编辑的TreeView控件</param>

/// <param name="eKeys">The <see cref="System.Windows.Forms.KeyEventArgs"/>KeyEventArgs为按键事件提供数据</param>

public void MoveSelectNode(TreeView TreeView1, KeyEventArgs eKeys)

{

try

{

if (TreeView1.SelectedNode == null)

{

return;

}

try

{

if (eKeys.KeyCode == Keys.Up && eKeys.Control == true)

{

TreeNode TN = new TreeNode();

TN = TreeView1.SelectedNode;

TreeNode TempNode = (TreeNode)TreeView1.SelectedNode.Clone();

if (TreeView1.SelectedNode.PrevNode == null)

{

return;

}

if (TN.Parent == null)

{

TreeView1.Nodes.Insert(TN.Index - 1, TempNode);

}

else

{

TN.Parent.Nodes.Insert(TN.Index - 1, TempNode);

}

TreeView1.SelectedNode.Remove();

TreeView1.SelectedNode = TempNode;

}

else if (eKeys.KeyCode == Keys.Down && eKeys.Control == true)

{

TreeNode TN = new TreeNode();

TN = TreeView1.SelectedNode;

TreeNode TempNode = (TreeNode)TreeView1.SelectedNode.Clone();

if (TreeView1.SelectedNode.NextNode == null)

{

return;

}

if (TN.Parent == null)

{

TreeView1.Nodes.Insert(TN.Index + 2, TempNode);

}

else

{

TN.Parent.Nodes.Insert(TN.Index + 2, TempNode);

}

TreeView1.SelectedNode.Remove();

TreeView1.SelectedNode = TempNode;

}

else if (eKeys.KeyCode == Keys.Left && eKeys.Control == true)

{

TreeNode TN = new TreeNode();

TN = TreeView1.SelectedNode;

TreeNode TempNode = (TreeNode)TreeView1.SelectedNode.Clone();

if (TreeView1.SelectedNode.Parent == null)

{

return;

}

else

{

if (TreeView1.SelectedNode.Parent.Parent == null)

{

TreeView1.Nodes.Add(TempNode);

}

else

{

TN.Parent.Parent.Nodes.Add(TempNode);

}

TN.Remove();

TreeView1.SelectedNode = TempNode;

}

else if (eKeys.KeyCode == Keys.Right && eKeys.Control == true)

{

TreeNode TN = new TreeNode();

TN = TreeView1.SelectedNode;

TreeNode TempNode = (TreeNode)TreeView1.SelectedNode.Clone();

if (TreeView1.SelectedNode.NextNode == null)

{

return;

}

TN.NextNode.Nodes.Insert(0, TempNode);

TN.Remove();

TreeView1.SelectedNode = TempNode;

}

catch

{

}

catch

{ }

}

#endregion

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