Control.Name 属性
获取或设置控件的名称。
**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 Name As String
用法
Dim instance As Control
Dim value As String
value = instance.Name
instance.Name = value
public string Name { get; set; }
public:
property String^ Name {
String^ get ();
void set (String^ value);
}
/** @property */
public String get_Name ()
/** @property */
public void set_Name (String value)
public function get Name () : String
public function set Name (value : String)
属性值
控件的名称。默认值为空字符串 ("")。
备注
Name 属性可以在运行时使用，以按名称而不是按类型和编程名称计算对象。由于 Name 属性返回一个 String 类型，因此可以在类似 case 的逻辑语句（在 Visual Basic 中为 Select 语句，在 Visual C# 和 Visual C++ 中为 switch 语句）中对其进行计算。
示例
下面的代码示例在向窗体添加控件或从窗体中移除控件时在 MessageBox 中显示控件的 Name。
' This example demonstrates the use of the ControlAdded and
' ControlRemoved events. This example assumes that two Button controls
' are added to the form and connected to the addControl_Click and
' removeControl_Click event-handler methods.
Private Sub Form1_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles MyBase.Load
' Connect the ControlRemoved and ControlAdded event handlers to the event-handler methods.
' ControlRemoved and ControlAdded are not available at design time.
AddHandler Me.ControlRemoved, AddressOf Me.Control_Removed
AddHandler Me.ControlAdded, AddressOf Me.Control_Added
End Sub 'Form1_Load
Private Sub Control_Added(ByVal sender As Object, ByVal e As System.Windows.Forms.ControlEventArgs)
MessageBox.Show(("The control named " + e.Control.Name + " has been added to the form."))
End Sub
Private Sub Control_Removed(ByVal sender As Object, ByVal e As System.Windows.Forms.ControlEventArgs)
MessageBox.Show(("The control named " + e.Control.Name + " has been removed from the form."))
End Sub
' Click event handler for a Button control. Adds a TextBox to the form.
Private Sub addControl_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles button1.Click
' Create a new TextBox control and add it to the form.
Dim textBox1 As New TextBox()
textBox1.Size = New Size(100, 10)
textBox1.Location = New Point(10, 10)
' Name the control in order to remove it later.
' The name must be specified if a control is added at run time.
textBox1.Name = "textBox1"
' Add the control to the form's control collection.
Me.Controls.Add(textBox1)
End Sub
' Click event handler for a Button control.
' Removes the previously added TextBox from the form.
Private Sub removeControl_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles button2.Click
' Loop through all controls in the form's control collection.
Dim tempCtrl As Control
For Each tempCtrl In Me.Controls
' Determine whether the control is textBox1,
' and if it is, remove it.
If tempCtrl.Name = "textBox1" Then
Me.Controls.Remove(tempCtrl)
End If
Next tempCtrl
End Sub
// This example demonstrates the use of the ControlAdded and
// ControlRemoved events. This example assumes that two Button controls
// are added to the form and connected to the addControl_Click and
// removeControl_Click event-handler methods.
private void Form1_Load(object sender, System.EventArgs e)
{
// Connect the ControlRemoved and ControlAdded event handlers
// to the event-handler methods.
// ControlRemoved and ControlAdded are not available at design time.
this.ControlRemoved += new System.Windows.Forms.ControlEventHandler(this.Control_Removed);
this.ControlAdded += new System.Windows.Forms.ControlEventHandler(this.Control_Added);
}
private void Control_Added(object sender, System.Windows.Forms.ControlEventArgs e)
{
MessageBox.Show("The control named " + e.Control.Name + " has been added to the form.");
}
private void Control_Removed(object sender, System.Windows.Forms.ControlEventArgs e)
{
MessageBox.Show("The control named " + e.Control.Name + " has been removed from the form.");
}
// Click event handler for a Button control. Adds a TextBox to the form.
private void addControl_Click(object sender, System.EventArgs e)
{
// Create a new TextBox control and add it to the form.
TextBox textBox1 = new TextBox();
textBox1.Size = new Size(100,10);
textBox1.Location = new Point(10,10);
// Name the control in order to remove it later. The name must be specified
// if a control is added at run time.
textBox1.Name = "textBox1";
// Add the control to the form's control collection.
this.Controls.Add(textBox1);
}
// Click event handler for a Button control.
// Removes the previously added TextBox from the form.
private void removeControl_Click(object sender, System.EventArgs e)
{
// Loop through all controls in the form's control collection.
foreach (Control tempCtrl in this.Controls)
{
// Determine whether the control is textBox1,
// and if it is, remove it.
if (tempCtrl.Name == "textBox1")
{
this.Controls.Remove(tempCtrl);
}
}
}
// This example demonstrates the use of the ControlAdded and
// ControlRemoved events. This example assumes that two Button controls
// are added to the form and connected to the addControl_Click and
// removeControl_Click event-handler methods.
private:
void Form1_Load( Object^ /*sender*/, System::EventArgs^ /*e*/ )
{
// Connect the ControlRemoved and ControlAdded event handlers
// to the event-handler methods.
// ControlRemoved and ControlAdded are not available at design time.
this->ControlRemoved += gcnew System::Windows::Forms::ControlEventHandler( this, &Form1::Control_Removed );
this->ControlAdded += gcnew System::Windows::Forms::ControlEventHandler( this, &Form1::Control_Added );
}
void Control_Added( Object^ /*sender*/, System::Windows::Forms::ControlEventArgs^ e )
{
MessageBox::Show( String::Format( "The control named {0} has been added to the form.", e->Control->Name ) );
}
void Control_Removed( Object^ /*sender*/, System::Windows::Forms::ControlEventArgs^ e )
{
MessageBox::Show( String::Format( "The control named {0} has been removed from the form.", e->Control->Name ) );
}
// Click event handler for a Button control. Adds a TextBox to the form.
void addControl_Click( Object^ /*sender*/, System::EventArgs^ /*e*/ )
{
// Create a new TextBox control and add it to the form.
TextBox^ textBox1 = gcnew TextBox;
textBox1->Size = System::Drawing::Size( 100, 10 );
textBox1->Location = Point(10,10);
// Name the control in order to remove it later. The name must be specified
// if a control is added at run time.
textBox1->Name = "textBox1";
// Add the control to the form's control collection.
this->Controls->Add( textBox1 );
}
// Click event handler for a Button control.
// Removes the previously added TextBox from the form.
void removeControl_Click( Object^ /*sender*/, System::EventArgs^ /*e*/ )
{
// Loop through all controls in the form's control collection.
IEnumerator^ myEnum = this->Controls->GetEnumerator();
while ( myEnum->MoveNext() )
{
Control^ tempCtrl = safe_cast<Control^>(myEnum->Current);
// Determine whether the control is textBox1,
// and if it is, remove it.
if ( tempCtrl->Name->Equals( "textBox1" ) )
{
this->Controls->Remove( tempCtrl );
}
}
}
// This example demonstrates the use of the ControlAdded and
// ControlRemoved events. This example assumes that two Button controls
// are added to the form and connected to the addControl_Click and
// removeControl_Click event-handler methods.
private void Form1_Load(Object sender, System.EventArgs e)
{
// Connect the ControlRemoved and ControlAdded event handlers
// to the event-handler methods.
// ControlRemoved and ControlAdded are not available at design time.
this.add_ControlRemoved(new System.Windows.Forms.
ControlEventHandler(this.Control_Removed));
this.add_ControlAdded(new System.Windows.Forms.
ControlEventHandler(this.Control_Added));
} //Form1_Load
private void Control_Added(Object sender, System.Windows.Forms.
ControlEventArgs e)
{
MessageBox.Show("The control named " + e.get_Control().get_Name()
+ " has been added to the form.");
} //Control_Added
private void Control_Removed(Object sender, System.Windows.Forms.
ControlEventArgs e)
{
MessageBox.Show("The control named " + e.get_Control().get_Name()
+ " has been removed from the form.");
} //Control_Removed
// Click event handler for a Button control. Adds a TextBox to the form.
private void addControl_Click(Object sender, System.EventArgs e)
{
// Create a new TextBox control and add it to the form.
TextBox textBox1 = new TextBox();
textBox1.set_Size(new Size(100, 10));
textBox1.set_Location(new Point(10, 10));
// Name the control in order to remove it later.
// The name must be specified
// if a control is added at run time.
textBox1.set_Name("textBox1");
// Add the control to the form's control collection.
this.get_Controls().Add(textBox1);
} //addControl_Click
// Click event handler for a Button control.
// Removes the previously added TextBox from the form.
private void removeControl_Click(Object sender, System.EventArgs e)
{
// Loop through all controls in the form's control collection.
for (int iCtr = 0; iCtr < this.get_Controls().get_Count(); iCtr++) {
Control tempCtrl = this.get_Controls().get_Item(iCtr);
// Determine whether the control is textBox1,
// and if it is, remove it.
if (tempCtrl.get_Name().Equals("textBox1")) {
this.get_Controls().Remove(tempCtrl);
}
}
} //removeControl_Click
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