What is IValueConverter?

Table of Contents

ValueConverters.rar. A Value Converter functions as a bridge between a target and a source and it is necessary when a target is bound with one source, for instance you have a text box and a button control. You want to enable or disable the button control when the text of the text box is filled or null.

What is convert back?

ConvertBack is when you have mode=TwoWay on your binding. It converts the user input back into the datatype that you’re binding to and gets invoked when the TextBox (say) loses focus.

Which interface in code allows us to create value converters?

IValueConverter Interface
IValueConverter Interface (System.

What is IValueConverter WPF?

When source object type and target object type are different at that time value converts are used to manipulate data between source and target. Converter class must implement IValueConverter interface. The IValueConverter interface consists of two methods, Convert() and ConvertBack() .

Which interface is used in WPF for converters?

As mentioned, a WPF value converter needs to implement the IValueConverter interface, or alternatively, the IMultiValueConverter interface (more about that one later). Both interfaces just requires you to implement two methods: Convert() and ConvertBack().

What is DataContext in WPF?

The DataContext property is the default source of your bindings, unless you specifically declare another source, like we did in the previous chapter with the ElementName property. It’s defined on the FrameworkElement class, which most UI controls, including the WPF Window, inherits from.

What is the use of ivalueconverter?

Implementation and usuage of ValueConverter. Value converters are used in Data binding. When source object type and target object type are different at that time value converts are used to manipulate data between source and target. Converter class must implement IValueConverter interface.

Are there any inbuilt valueconverters?

There are various inbuilt valueconverters that may come in handy. Here are the examples: Thanks for reading this tip. Any improvements on this will be appreciated. I just stumbled upon an article on wpf-tutorial.com [ ^] which is so similar to your article. Wonder who copied from whom… combobox with IsChecked? Huh? Come Again? 27-Jan-15 22:30

What is the use of convertback in a textbox?

IMO, the ConvertBack method is used to convert your visual representation of the data to the specific DataType. For example: you use a Converter to convert a boolean true to the string “TrueBoolean”. This text will be displayed in your TextBox.

What is the use of valueconverter in data binding?

Please Sign up or sign in to vote. Implementation and usuage of ValueConverter. Value converters are used in Data binding. When source object type and target object type are different at that time value converts are used to manipulate data between source and target. Converter class must implement IValueConverter interface.