WPF Access of Cell in a Grid

Question

i have a big problem and i am searching for a long time but i dont find the answer so i ask here now. I know how get Column and Row of something what i clicked and can set UI Elements but i cant check if for example a playstone is on row 1 and column 1. How i get access for a specif cell, i want check if a specific cell is a button or empty. Thanks for everyone who tries to answer this question.

What i know: How to get rows:

 Button btn = sender as Button;
                var Spalte = Grid.GetColumn(btn);
                var Zeile = Grid.GetRow(btn);

How to set a Element:

Grid.SetColumn(Spielstein, Spalte);
Grid.SetRow(Spielstein, Zeile);

What i dont know: Access the Cell of Row 1 and Column 1 and check if this is a Button

Answer 1

Good Night, As far as I know, it is not possible in wpf to access a specific cell in the Grid . Use:

var Spalte = Grid.GetColumn(btn);
var Zeile = Grid.GetRow(btn);

Answer 2

There isn't a direct way of access the element by the column-row position of a Grid element, but you can write a utility method that do this, iterating over the children items of the Grid element and get the column and row position of that element like you did it before. I write an example of this utility method named GetElementInGridPosition:

The code in the window:

public partial class Window1 : Window {
    public Window1() {
        InitializeComponent();
    }

    private void ButtonBase_OnClick(object sender, RoutedEventArgs e) {
        var element = this.GetElementInGridPosition(1, 1);
        if (element is Button)
            MessageBox.Show($"The element in 1,1 is a button.");

        element = this.GetElementInGridPosition(2, 1);
        if (element is Button)
            MessageBox.Show($"The element in 2,1 is a button.");
        else
            MessageBox.Show($"The element in 2,1 isn't a button, it's a {element.GetType().Name}.");
    }

    private UIElement GetElementInGridPosition(int column, int row) {
        foreach (UIElement element in this.RootGrid.Children) {
            if (Grid.GetColumn(element) == column && Grid.GetRow(element) == row)
                return element;
        }

        return null;
    }
}

and the xaml:

<Grid Name="RootGrid">
    <Grid.RowDefinitions>
        <RowDefinition />
        <RowDefinition />
    </Grid.RowDefinitions>
    <Grid.ColumnDefinitions>
        <ColumnDefinition />
        <ColumnDefinition />
        <ColumnDefinition />
    </Grid.ColumnDefinitions>

    <Button Click="ButtonBase_OnClick">Button</Button>
    <Button Grid.Row="1" Grid.Column="1">Button in column 1, row 1</Button>
    <Label Grid.Row="1" Grid.Column="2">Label in column 2, row 1</Label>
</Grid>