How do I set default value in property?
Set a default value
- In the Navigation Pane, right-click the form that you want to change, and then click Design View.
- Right-click the control that you want to change, and then click Properties or press F4.
- Click the All tab in the property sheet, locate the Default Value property, and then enter your default value.
What is the best way to give AC Auto property an initial value?
In C# 5 and earlier, to give auto implemented properties an initial value, you have to do it in a constructor. DefaultValueAttribute is intended to be used by the VS designer (or any other consumer) to specify a default value, not an initial value. (Even if in designed object, initial value is the default value).
How do I change the default value in C#?
Set Default Value to Property in C#
- Default Value of Auto-Implemented Property. In C# 6.0 or higher versions, assign the inline default value to the auto-implemented property, as shown below.
- Using Property Setter. The following example sets the default value to a private property field.
- Using DefaultValue Attribute.
Is default value C#?
As you can see, for the integral value types, the default value is zero. The default value for the char type is the character equivalent of zero and false for the bool type. The object and string types have a default value of null, representing a null reference that literally is one that does not refer to any object.
What is default value property?
The defaultValue property sets or returns the default value of a text field. If there are no changes, defaultValue and value is the same (see “More Examples” below). The defaultValue property is useful when you want to find out whether the contents of a text field have been changed.
What is the maximum length for a default value property?
255 characters
The maximum length for a DefaultValue property setting is 255 characters. For a control, you can set this property in the control’s property sheet.
What is the point of auto implemented properties?
Auto-implemented properties enable you to quickly specify a property of a class without having to write code to Get and Set the property.
What is an auto implemented property?
Auto-implemented properties declare a private instance backing field, and interfaces may not declare instance fields. Declaring a property in an interface without defining a body declares a property with accessors that must be implemented by each type that implements that interface.
What is the default value of a property in C#?
In this article
| Type | Default value |
|---|---|
| Any nullable value type | An instance for which the HasValue property is false and the Value property is undefined. That default value is also known as the null value of a nullable value type. |
What is the default value of a class in C#?
null
The default value for classes is null . For structures, the default value is the same as you get when you instantiate the default parameterless constructor of the structure (which can’t be overriden by the way).
What is default C#?
The default keyword returns the “default” or “empty” value for a variable of the requested type. For all reference types (defined with class , delegate , etc), this is null . For value types (defined with struct , enum , etc) it’s an all-zeroes value (for example, int 0 , DateTime 0001-01-01 00:00:00 , etc).
What is Property C#?
Property in C# is a member of a class that provides a flexible mechanism for classes to expose private fields. Internally, C# properties are special methods called accessors. A get accessor returns a property value, and a set accessor assigns a new value. The value keyword represents the value of a property.
How to create default property for class in C #?
How to create default property for class in C#? C# does not directly support default properties. This is not recommended, but you can fake it somewhat by creating an implicit conversion from your type to the data type of your “default property”, and in that conversion return the value of that property.
Which is the default property in Visual Basic?
“A property that accepts arguments can be declared as the default property for a class. A default property is the property that Visual Basic will use when no specific property has been named for an object. Default properties are useful because they allow you to make your source code more compact by omitting frequently used property names.”
How to call a default property in Java?
To call a default property Declare a variable of the containing class or structure type. Use the variable name alone in an expression where you would normally include the property name. Follow the variable name with an argument list in parentheses.
Which is the default value of defaultpropertyattribute?
Specifies the default value for the DefaultPropertyAttribute, which is null. This static field is read-only. Gets the name of the default property for the component this attribute is bound to. When implemented in a derived class, gets a unique identifier for this Attribute.