ControlValuePropertyAttribute Constructors
Definition
Important
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Initializes a new instance of the ControlValuePropertyAttribute class.
Overloads
ControlValuePropertyAttribute(String) |
Initializes a new instance of the ControlValuePropertyAttribute class using the specified property name. |
ControlValuePropertyAttribute(String, Object) |
Initializes a new instance of the ControlValuePropertyAttribute class using the specified property name and default value. |
ControlValuePropertyAttribute(String, Type, String) |
Initializes a new instance of the ControlValuePropertyAttribute class using the specified property name and default value. The default value is also converted to the specified data type. |
ControlValuePropertyAttribute(String)
Initializes a new instance of the ControlValuePropertyAttribute class using the specified property name.
public:
ControlValuePropertyAttribute(System::String ^ name);
public ControlValuePropertyAttribute (string name);
new System.Web.UI.ControlValuePropertyAttribute : string -> System.Web.UI.ControlValuePropertyAttribute
Public Sub New (name As String)
Parameters
- name
- String
The default property for the control.
Examples
The following code example demonstrates how to apply a ControlValuePropertyAttribute attribute that specifies a default property to a custom control. This constructor is called internally by ASP.NET to create a ControlValuePropertyAttribute object that represents the attribute.
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Text;
using System.Web.UI;
using System.Web.UI.WebControls;
namespace Samples.AspNet.CS.Controls
{
// Set ControlValueProperty attribute to specify the default
// property of this control that a ControlParameter object
// binds to at run time.
[DefaultProperty("Text")]
[ControlValueProperty("Text")]
public class SimpleCustomControl : WebControl
{
private string text;
[Bindable(true)]
[Category("Appearance")]
[DefaultValue("")]
public string Text
{
get
{
return text;
}
set
{
text = value;
}
}
protected override void Render(HtmlTextWriter output)
{
output.Write(Text);
}
}
}
Imports System.ComponentModel
Imports System.Web.UI
Namespace Samples.AspNet.VB.Controls
' Set ControlValueProperty attribute to specify the default
' property of this control that a ControlParameter object
' binds to at run time.
<DefaultProperty("Text"), ControlValueProperty("Text")> Public Class SimpleCustomControl
Inherits System.Web.UI.WebControls.WebControl
Dim _text As String
<Bindable(True), Category("Appearance"), DefaultValue("")> Property [Text]() As String
Get
Return _text
End Get
Set(ByVal Value As String)
_text = Value
End Set
End Property
Protected Overrides Sub Render(ByVal output As System.Web.UI.HtmlTextWriter)
output.Write([Text])
End Sub
End Class
End Namespace
Remarks
Use this constructor to create a new instance of the ControlValuePropertyAttribute class using the specified property name. The following table shows the initial property value for an instance of the ControlValuePropertyAttribute class.
Property | Initial value |
---|---|
Name | The value of the name parameter. |
See also
Applies to
ControlValuePropertyAttribute(String, Object)
Initializes a new instance of the ControlValuePropertyAttribute class using the specified property name and default value.
public:
ControlValuePropertyAttribute(System::String ^ name, System::Object ^ defaultValue);
public ControlValuePropertyAttribute (string name, object defaultValue);
new System.Web.UI.ControlValuePropertyAttribute : string * obj -> System.Web.UI.ControlValuePropertyAttribute
Public Sub New (name As String, defaultValue As Object)
Parameters
- name
- String
The default property for the control.
- defaultValue
- Object
The default value for the default property.
Examples
The following code example demonstrates how to apply a ControlValuePropertyAttribute attribute that specifies a default property and value to a custom control. This constructor is called internally by ASP.NET to create a ControlValuePropertyAttribute object that represents the attribute.
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Text;
using System.Web.UI;
using System.Web.UI.WebControls;
namespace Samples.AspNet.CS.Controls
{
// Set ControlValueProperty attribute to specify the default
// property of this control that a ControlParameter object
// binds to at run time.
[DefaultProperty("Text")]
[ControlValueProperty("Text", "Default Text")]
public class SimpleCustomControl : WebControl
{
private string text;
[Bindable(true)]
[Category("Appearance")]
[DefaultValue("")]
public string Text
{
get
{
return text;
}
set
{
text = value;
}
}
protected override void Render(HtmlTextWriter output)
{
output.Write(Text);
}
}
}
Imports System.ComponentModel
Imports System.Web.UI
Namespace Samples.AspNet.VB.Controls
' Set ControlValueProperty attribute to specify the default
' property of this control that a ControlParameter object
' binds to at run time.
<DefaultProperty("Text"), ControlValueProperty("Text", "DefaultText")> Public Class SimpleCustomControl
Inherits System.Web.UI.WebControls.WebControl
Dim _text As String
<Bindable(True), Category("Appearance"), DefaultValue("")> Property [Text]() As String
Get
Return _text
End Get
Set(ByVal Value As String)
_text = Value
End Set
End Property
Protected Overrides Sub Render(ByVal output As System.Web.UI.HtmlTextWriter)
output.Write([Text])
End Sub
End Class
End Namespace
Remarks
Use this constructor to create a new instance of the ControlValuePropertyAttribute class using the specified property name and default value. The following table shows initial property values for an instance of the ControlValuePropertyAttribute class.
Property | Initial value |
---|---|
Name | The value of the name parameter. |
DefaultValue | The value of the defaultValue parameter. |
See also
Applies to
ControlValuePropertyAttribute(String, Type, String)
Initializes a new instance of the ControlValuePropertyAttribute class using the specified property name and default value. The default value is also converted to the specified data type.
public:
ControlValuePropertyAttribute(System::String ^ name, Type ^ type, System::String ^ defaultValue);
public ControlValuePropertyAttribute (string name, Type type, string defaultValue);
new System.Web.UI.ControlValuePropertyAttribute : string * Type * string -> System.Web.UI.ControlValuePropertyAttribute
Public Sub New (name As String, type As Type, defaultValue As String)
Parameters
- name
- String
The default property for the control.
- defaultValue
- String
The default value for the default property.
Remarks
Use this constructor to create a new instance of the ControlValuePropertyAttribute class using the specified property name and default value. This version of the constructor also attempts to convert the default value to the data type specified by the type
parameter. If the default value cannot be converted, the DefaultValue property is not set. The following table shows initial property values for an instance of the ControlValuePropertyAttribute class.
Property | Initial value |
---|---|
Name | The value of the name parameter. |
DefaultValue | The value of the defaultValue parameter, if the value can be converted to the data type specified by the type parameter. |
See also
Applies to
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