Expression.Default Method
.NET Framework 4.5
Creates a DefaultExpression that has the Type property set to the specified type.
Namespace: System.Linq.Expressions
Assembly: System.Core (in System.Core.dll)
Parameters
- type
- Type: System.Type
Return Value
Type: System.Linq.Expressions.DefaultExpressionA DefaultExpression that has the NodeType property equal to Default and the Type property set to the specified type.
The following code example shows how to create an expression that represents a default vaule for a given type.
// Add the following directive to your file: // using System.Linq.Expressions; // This expression represents the default value of a type // (0 for integer, null for a string, etc.) Expression defaultExpr = Expression.Default( typeof(byte) ); // Print out the expression. Console.WriteLine(defaultExpr.ToString()); // The following statement first creates an expression tree, // then compiles it, and then executes it. Console.WriteLine( Expression.Lambda<Func<byte>>(defaultExpr).Compile()()); // This code example produces the following output: // // default(Byte) // 0
Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
