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Parameter Constructor (Parameter)

Initializes a new instance of the Parameter class with the values of the original, specified instance.

Namespace:  System.Web.UI.WebControls
Assembly:  System.Web (in System.Web.dll)

protected Parameter(
	Parameter original


Type: System.Web.UI.WebControls.Parameter

A Parameter instance from which the current instance is initialized.

The Parameter(Parameter) constructor is a protected copy constructor used to clone a Parameter instance. The values of the Name, Type, DefaultValue, Direction, and ConvertEmptyStringToNull properties are all transferred to the new instance.

The following code example demonstrates how to call the Parameter(Parameter) constructor from a class that extends the Parameter class to implement correct object cloning behavior for the class. This code example is part of a larger example provided for the Parameter class overview.

// The StaticParameter copy constructor is provided to ensure that 
// the state contained in the DataValue property is copied to new 
// instances of the class. 
protected StaticParameter(StaticParameter original) : base(original) {
  DataValue = original.DataValue;

// The Clone method is overridden to call the 
// StaticParameter copy constructor, so that the data in 
// the DataValue property is correctly transferred to the 
// new instance of the StaticParameter. 
protected override Parameter Clone() {
  return new StaticParameter(this);

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

.NET Framework

Supported in: 3.5, 3.0, 2.0