Can we create a Combobox for custom activity

Help Activities
, ,
1

I want have created this activitie
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and I want to connect this properties with combo box

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I think I’m missing smth in binding, in textbox work fine
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image975×589 144 KB

2

Here is our binding in xaml code:

<ComboBox x:Name="cbEnvironment" HorizontalAlignment="Right" VerticalAlignment="Center" Width="150" Grid.Column="0" Margin="0,0,40,0" SelectedValue="{Binding ModelItem.KsefEnvironment, Mode=TwoWay}"/>

But we have also additional code for that in cs (cs for specific activity designer, where you have InitializeComponent method by default):

public InitSessionByTokenDesigner()
        {
            InitializeComponent();
            cbEnvironment.ItemsSource = LocalizedEnum<Environments>.GetLocalizedValues();
            cbEnvironment.DisplayMemberPath = nameof(LocalizedEnum.Name);
            cbEnvironment.SelectedValuePath = nameof(LocalizedEnum.Value);
        }

So the list is dynamically connected to enum (in my case - custom enum called Environment).

1 Like
3

which parameter are in you code with value KsefEnviroment and LocalizedEnum
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4

LocalizedEnum is the method form UiPath.Shared project.
add this import in file where you have InitializeComponent method:

using UiPath.Shared.Activities.Localization;

KsefEnviroment is our custom enum. We defined it in UiPath.Shared.Activities.Localization namespace to have direct access:

namespace UiPath.Shared.Activities.Localization
{
    public enum  Environments
    {
        [LocalizedDescription("TEST")]
        TEST,
        [LocalizedDescription("DEMO")]
        DEMO,
        [LocalizedDescription("PROD")]
        PROD
    }
}

This enum is used in .Activities project in activity code:

[LocalizedDisplayName(nameof(Resources.InitSessionByToken_Environment_DisplayName))]
[LocalizedDescription(nameof(Resources.InitSessionByToken_Environment_Description))]
[LocalizedCategory(nameof(Resources.Input_Category))]
public Environments KsefEnvironment { get; set; }
5

For the LocalizedEnum It still shows the same error

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i have created the enum variable in localization
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and for the part of properties it works fine
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image1235×473 23.5 KB

Now I just need to get this value from Environments and add it in ComboBox

1 Like
6

Now I see you have have .net6 project.
My solution is in activity creator for visual studio 2019 and net461.
In localization.cs file I have these classes, which may not exist in your case:

public class LocalizedEnum
    {
        public string Name { get; private set; }
        public Enum Value { get; private set; }

        protected internal LocalizedEnum(string name, Enum value)
        {
            if (string.IsNullOrWhiteSpace(name))
            {
                throw new ArgumentNullException(nameof(name));
            }
            if (value == null)
            {
                throw new ArgumentNullException(nameof(value));
            }

            Name = name;
            Value = value;
        }
    }

    public class LocalizedEnum<T> : LocalizedEnum
    {
        protected LocalizedEnum(string name, Enum value) : base(name, value)
        {
        }

        public static List<LocalizedEnum> GetLocalizedValues()
        {
            List<LocalizedEnum> localizedValues = new List<LocalizedEnum>();

            Type enumType = typeof(T);
            Array enumValues = Enum.GetValues(enumType);

            foreach (Enum value in enumValues)
            {
                string name = enumType.GetEnumName(value);
                FieldInfo field = enumType.GetField(name);
                DescriptionAttribute descriptionAttribute = field?.GetCustomAttribute<DescriptionAttribute>();

                localizedValues.Add(new LocalizedEnum(descriptionAttribute?.Description ?? name, value));
            }

            return localizedValues;
        }
    }

Try to paste these classes

2 Likes
7

Thank you!
It works fine

8

Great, it was a nice fight :slight_smile:
I also recommend to see project UiPath Community Activities available in github:

There are many clever tricks to learn and this solution is perfect to improve skills in coding custom activities

2 Likes
9

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