Get_DataGrid_Cell - lucyberryhub/WPF.Tutorial GitHub Wiki

πŸ’ Lucy Berry's Tutorial of the Day 🌸

Hello, my little cherry blossoms! 🌸 Today, Lucy Berry learned how to get the DataGrid row information when clicking on a specific cell! Isn't that berry-cute? πŸ“ Let's dive into this adorable journey together! ✨

🌸 Step 1: Setting Up the Berry-Cute DataGrid πŸ’

We first create our berrylicious columns in the SetColumns method. Each column has a special role, like being a cute little textbox or a sweet template column for images and text. Here's how the berry magic happens:

private void BerryTable_SetCherryColumns() // πŸ’ Renamed for cuteness!
{
    Style cherryCenteredTextStyle = TemplateHelper.CreateCenteredStyle(typeof(TextBlock));
    Style cherryCenteredEditingTextStyle = TemplateHelper.CreateCenteredStyle(typeof(TextBox));

    // Define our adorable cherry columns! πŸ’
    var cherryColumns = new List<DataGridColumn>
    {
        new DataGridTextColumn
        {
            Header = "πŸ’ Id", // It's a hidden berry! 🌸
            Binding = new Binding("BerryId") { Mode = BindingMode.OneWay },
            Visibility = Visibility.Collapsed
        },
        new DataGridTextColumn
        {
            Header = "πŸ“ Title β‘ ",
            Binding = new Binding("BerryTitle") { Mode = BindingMode.TwoWay },
            Width = 70,
            ElementStyle = cherryCenteredTextStyle,
            EditingElementStyle = cherryCenteredEditingTextStyle
        },
        new DataGridTextColumn
        {
            Header = "πŸ“ Title β‘‘",
            Binding = new Binding("BerryTitle2") { Mode = BindingMode.TwoWay },
            Width = 70,
            ElementStyle = cherryCenteredTextStyle,
            EditingElementStyle = cherryCenteredEditingTextStyle
        },
        new DataGridTemplateColumn
        {
            Header = (string)Application.Current.Resources["str_cherryBlossomEikaku"],
            Width = 70,
            CellTemplate = new DataTemplate
            {
                VisualTree = CreateCherryImageCellTemplate("CherryEikaku")
            },
            CellEditingTemplate = new DataTemplate
            {
                VisualTree = CreateCherryTextBoxEditingTemplate("CherryEikaku")
            }
        },
        new DataGridTemplateColumn
        {
            Header = (string)Application.Current.Resources["str_cherryBlossomDonkaku"],
            Width = 70,
            CellTemplate = new DataTemplate
            {
                VisualTree = CreateCherryImageCellTemplate("CherryDonkaku")
            },
            CellEditingTemplate = new DataTemplate
            {
                VisualTree = CreateCherryTextBoxEditingTemplate("CherryDonkaku")
            }
        }
    };

    // Cherry Table Settings πŸ’
    BerryTableControl.RowHeight = 60;
    BerryTableControl.NeedDeleteButton = true; // Gotta prune those cherries! 🌸
    BerryTableControl.SetColumns(cherryColumns);
}

πŸ“ Step 2: Detecting the Clicked Cherry Cell 🌸

Now, let’s add the cutie-pie method to find out which cherry cell was clicked and retrieve the data. We'll handle the MouseLeftButtonUp event in our berry-tastic table. Here’s the magic:

private void BerryTable_CherryMouseClick(object sender, MouseButtonEventArgs e) // 🐾 So cute!
{
    // Close the CherryPickerPopup by default πŸ’
    CherryPickerPopup.IsOpen = false;

    // Use the cherry tree helper 🌸
    DependencyObject clickedBerry = e.OriginalSource as DependencyObject;

    while (clickedBerry != null && !(clickedBerry is DataGridCell))
    {
        clickedBerry = VisualTreeHelper.GetParent(clickedBerry);
    }

    if (clickedBerry is DataGridCell berryCell)
    {
        // Find which berry column it belongs to πŸ’
        var cherryColumn = berryCell.Column;

        if (cherryColumn is DataGridTemplateColumn cherryTemplateColumn && cherryTemplateColumn.Header != "")
        {
            // Get the row’s data context (the berry basket! πŸ“)
            var berryBasket = berryCell.DataContext;

            if (berryBasket != null)
            {
                // Retrieve the juicy cherry value! πŸ’
                var cherryValue = berryBasket.GetType().GetProperty("CherryDonkaku")?.GetValue(berryBasket);

                // Open the cherry picker popup 🌸
                CherryPickerPopup.IsOpen = true;

                // Display berry value (optional)
                //MessageBox.Show($"Clicked cherry column: {cherryTemplateColumn.Header}\nBerry value: {cherryValue}", "Berry Clicked!");
            }
        }
    }
}

🌸 Step 3: Adding the Cherry Picker Popup πŸ’

Don’t forget to add a cute CherryPickerPopup in your XAML to display something berry-adorable! πŸ“ Here’s an example:

<Popup x:Name="CherryPickerPopup"
       StaysOpen="False"
       Placement="Mouse"
       Width="150"
       Height="50">
    <Border BorderBrush="Pink" BorderThickness="2" Background="LightPink" CornerRadius="10">
        <TextBlock Text="πŸ’ Pick your cherry!" VerticalAlignment="Center" HorizontalAlignment="Center" Foreground="DarkRed" />
    </Border>
</Popup>

🌸 Lucy's Lessons of the Day πŸ“

  1. πŸ’ Cherry DataGrid Setup:

    • Create adorable DataGridTemplateColumn with custom CellTemplate and CellEditingTemplate.

  2. πŸ“ Cherry Cell Click Detection:

    • Use MouseLeftButtonUp to traverse the visual cherry tree and find the clicked cell.
    • Retrieve the row’s data using the DataContext.

  3. 🌸 Cherry Picker Popup:

    • Add a berry-cute popup to show when a special cherry is clicked!

🐾 Final Cherry Message πŸ’

Congratulations, my little cherry blossoms! 🌸 You’ve learned how to click on a DataGrid cell and retrieve its berry-sweet data! Keep being berry-tastic, and I'll see you in the next cutie tutorial! πŸ“βœ¨

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