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Getting Started

This tutorial will walk your through the creation of a sample application that contains RadCalculator and will show you how to:

  • Use RadCalculator in your project

  • Perform basic calculations

  • Perform more complicated calculations

For the purpose of this example, you will need to create an empty WPF Application project and open it in Visual Studio.

Assembly References

In order to use RadCalculator in your projects, you have to add reference to the following assemblies:

  • Telerik.Windows.Controls
  • Telerik.Windows.Controls.Input

Adding RadCalculator to the Project

Example 1: Defining RadCalculator

<UserControl x:Class="RadCalculator.MainPage" 
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" 
             xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
             xmlns:telerik="http://schemas.telerik.com/2008/xaml/presentation" 
             xmlns:my="clr-namespace:RadCalculator" 
             mc:Ignorable="d" d:DesignHeight="700" d:DesignWidth="700">    
 
    <Grid x:Name="LayoutRoot" Background="White" > 
        <telerik:RadCalculator />        
    </Grid> 
</UserControl> 
Now if you run the application, you will have a RadCalculator:

Figure 1: Defining RadCalculator

Rad Calculator-Basic

Performing Basic Calculations with RadCalculator

RadCalculator allows you to perform all the basic calculations - addition, subtraction, multiplication, division. All of them can be executed either by the corresponding buttons or through the keyboard. Once a particular operation is executed, the history is updated accordingly:

Figure 2: Basic Calculations with RadCalculator

Rad Calculator-Basic Calculations

Performing Complex Calculations with RadCalculator

RadCalculator allows you to perform a couple of more complex calculations - square root, reciprocal, percent, negate. All of them can be executed either by the corresponding buttons or through the keyboard. Once a particular operation is executed, the history is updated accordingly:

Figure 3: Complex Calculations with RadCalculator

Rad Calculator-Complex Calculations

Setting a Theme

The controls from our suite support different themes. You can see how to apply a theme different than the default one in the Setting a Theme help article.

Changing the theme using implicit styles will affect all controls that have styles defined in the merged resource dictionaries. This is applicable only for the controls in the scope in which the resources are merged.

To change the theme, you can follow the steps below:

  • Choose between the themes and add reference to the corresponding theme assembly (ex: Telerik.Windows.Themes.Fluent.dll). You can see the different themes applied in the Theming examples from our WPF Controls Examples application.

  • Merge the ResourceDictionaries with the namespace required for the controls that you are using from the theme assembly. For the RadCalculator, you will need to merge the following resources:

    • Telerik.Windows.Controls
    • Telerik.Windows.Controls.Input

Example 2 demonstrates how to merge the ResourceDictionaries so that they are applied globally for the entire application.

Example 2: Merge the ResourceDictionaries

<Application.Resources> 
    <ResourceDictionary> 
        <ResourceDictionary.MergedDictionaries> 
            <ResourceDictionary Source="/Telerik.Windows.Themes.Fluent;component/Themes/System.Windows.xaml"/> 
            <ResourceDictionary Source="/Telerik.Windows.Themes.Fluent;component/Themes/Telerik.Windows.Controls.xaml"/> 
            <ResourceDictionary Source="/Telerik.Windows.Themes.Fluent;component/Themes/Telerik.Windows.Controls.Input.xaml"/> 
        </ResourceDictionary.MergedDictionaries> 
    </ResourceDictionary> 
</Application.Resources> 

Alternatively, you can use the theme of the control via the StyleManager.

Figure 4 shows a RadCalculator with the Fluent theme applied.

Figure 4: RadCalculator with the Fluent theme

RadCalculator with Fluent theme

See Also

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