TreeNode.BackColor 属性
获取或设置树节点的背景色。
**命名空间:**System.Windows.Forms
**程序集:**System.Windows.Forms（在 system.windows.forms.dll 中）
语法
声明
Public Property BackColor As Color
用法
Dim instance As TreeNode
Dim value As Color
value = instance.BackColor
instance.BackColor = value
public Color BackColor { get; set; }
public:
property Color BackColor {
Color get ();
void set (Color value);
}
/** @property */
public Color get_BackColor ()
/** @property */
public void set_BackColor (Color value)
public function get BackColor () : Color
public function set BackColor (value : Color)
属性值
树节点的背景 Color。默认为 Color.Empty。
备注
如果将 BackColor 属性设置为 Color.Empty，所使用的 Color 则为树节点分配到的 TreeView 控件的 BackColor 属性值。
示例
下面的代码示例通过将 BackColor 属性设置为 Yellow 来突出显示 TreeView 控件（该控件的 Checked 属性设置为 true）中的所有 TreeNode 对象。这段代码要求 Form 上有一个包含 TreeNode 对象集合的 TreeView 控件。
Public Sub HighlightCheckedNodes()
Dim countIndex As Integer = 0
Dim selectedNode As String = "Selected customer nodes are : "
Dim myNode As TreeNode
For Each myNode In myTreeView.Nodes(0).Nodes
' Check whether the tree node is checked.
If myNode.Checked Then
' Set the node's backColor.
myNode.BackColor = Color.Yellow
selectedNode += myNode.Text + " "
countIndex += 1
Else
myNode.BackColor = Color.White
End If
Next myNode
If countIndex > 0 Then
MessageBox.Show(selectedNode)
Else
MessageBox.Show("No nodes are selected")
End If
End Sub
public void HighlightCheckedNodes()
{
int countIndex = 0;
string selectedNode = "Selected customer nodes are : ";
foreach (TreeNode myNode in myTreeView.Nodes[0].Nodes)
{
// Check whether the tree node is checked.
if(myNode.Checked)
{
// Set the node's backColor.
myNode.BackColor = Color.Yellow;
selectedNode += myNode.Text+" ";
countIndex++;
}
else
myNode.BackColor = Color.White;
}
if(countIndex > 0)
MessageBox.Show(selectedNode);
else
MessageBox.Show("No nodes are selected");
}
public:
void HighlightCheckedNodes()
{
int countIndex = 0;
String^ selectedNode = "Selected customer nodes are : ";
IEnumerator^ myEnum = myTreeView->Nodes[ 0 ]->Nodes->GetEnumerator();
while ( myEnum->MoveNext() )
{
TreeNode^ myNode = safe_cast<TreeNode^>(myEnum->Current);
// Check whether the tree node is checked.
if ( myNode->Checked )
{
// Set the node's backColor.
myNode->BackColor = Color::Yellow;
selectedNode = String::Concat( selectedNode, myNode->Text, " " );
countIndex++;
}
else
myNode->BackColor = Color::White;
}
if ( countIndex > 0 )
MessageBox::Show( selectedNode );
else
MessageBox::Show( "No nodes are selected" );
}
public void HighlightCheckedNodes()
{
int countIndex = 0;
String selectedNode = "Selected customer nodes are : ";
for (int iCtr = 0; iCtr < myTreeView.get_Nodes().get_Item(0).
get_Nodes().get_Count(); iCtr++) {
TreeNode myNode = myTreeView.get_Nodes().get_Item(0).
get_Nodes().get_Item(iCtr);
// Check whether the tree node is checked.
if (myNode.get_Checked()) {
// Set the node's backColor.
myNode.set_BackColor(Color.get_Yellow());
selectedNode += myNode.get_Text() + " ";
countIndex++;
}
else {
myNode.set_BackColor(Color.get_White());
}
}
if (countIndex > 0) {
MessageBox.Show(selectedNode);
}
else {
MessageBox.Show("No nodes are selected");
}
} //HighlightCheckedNodes
平台
Windows 98、Windows 2000 SP4、Windows CE、Windows Millennium Edition、Windows Mobile for Pocket PC、Windows Mobile for Smartphone、Windows Server 2003、Windows XP Media Center Edition、Windows XP Professional x64 Edition、Windows XP SP2、Windows XP Starter Edition
.NET Framework 并不是对每个平台的所有版本都提供支持。有关受支持版本的列表，请参见系统要求。
版本信息
.NET Framework
受以下版本支持：2.0、1.1、1.0
.NET Compact Framework
受以下版本支持：2.0