What is converters in wpf

Commented on 6. November Thanks for these cool examples. It would help a lot if you would add the namespaces one has to add in order to use your examples. Would save a lot of time. Commented on Great article just a typo: valueConverter instead of ValueConvers.

March It would be helpful to mention that this converter already exists in System. Let's say you have a check box control bound the text with the text of text box control. You want to determine whether the check box is checked when the text is married and unchecked when the text is unmarried. In the preceding code, I am checking the text of text box.

If it is married then the convert function returns true that will make the check box checked otherwise it will uncheck the checkbox. The convert back function is doing as said above, if the check box is checked it is setting the text of the TextBox to Married and otherwise Unmarried.

To use the converter you need to implement the interface of the converter class in the XAML page of WPF and need to declare the resource. After declaring the resource there is the need to use it with binding. To invert the results of the converter, set the IsInverted property. This way, Visibility. Visible will be converted to false and Visibility. Collapsed to true. Converts an Enum value to Visibility enumeration values. If the enum value is one of the values specified in the converter parameter, the Convert method will return Visibility.

Visible , otherwise it will return Visibility. Multiple enum values could be specified in the converter parameter, separated using , or ;. This converter converts Null or empty string values to Visibility enumeration values. If the input value is Null or empty string , the converter will return Visibility. This converter converts a number double or integer value to Visibility enumeration value.

If the value is less than or equal to 0, returns Visibility. Collapsed , otherwise returns Visibility. Free Xamarin. Forms UI Controls. Enterprise and Analytic Tools. Report and Dashboard Server. BI Dashboard. Office File API. End-User Documentation. Interface Elements for Desktop. Interface Elements for Web. Dashboard for Desktop. Dashboard for Web. Download CHM. Converters Jan 20, 5 minutes to read The DevExpress.

All converters are in the DevExpress. UI namespace. ObjectToObjectConverter This converter acts as a dictionary, which maps predefined input values to output values of any type. ObjectToObjectConverter provides three properties. Map — this property contains a collection of MapItem objects that map input and output values.

DefaultTarget — this property contains an object, which should be returned in case of a failed conversion.