Question

我正在开发一个演示应用，我尝试根据组合框中的选择设置网格大小。我遇到的问题是，例如，当做一个2x2网格时。它没有填补网格;只有四分之一。我已经尝试弄乱行和列的大小以及内部的控件，但我不能让它按照我想要的方式运行。我正在寻找的行为对行和列的划分空间过于均等;然后控制填充单元格。当我调整窗口大小时，我想要网格，并且每个单元格中的控件也会随窗口调整大小。

这是我的代码：

int row = 0;
int col = 0;
short cam = 0;
for (int i = 0; i < (_length * _length); i++)
{
    RowDefinition rowDef = new RowDefinition();
    ColumnDefinition colDef = new ColumnDefinition();

    //rowDef.Height = GridLength.Auto;
    //colDef.Width = GridLength.Auto;
    //rowDef.Height = new GridLength((this.ActualHeight / length) - 7, GridUnitType.Star);
    //colDef.Width = new GridLength((this.ActualWidth / length) - 1, GridUnitType.Star);
    //var converter = new GridLengthConverter();
    //rowDef.Height = (GridLength)converter.ConvertFromString("*");
    //colDef.Width = (GridLength)converter.ConvertFromString("*");
    Border border = new Border();
    border.BorderBrush = Brushes.White;
    border.BorderThickness = new Thickness(2);

    //rowDef.MinHeight = (this.ActualHeight / _length) - 7;
    //colDef.MinWidth = (this.ActualWidth / _length) - 1;

    rendererGrid.RowDefinitions.Add(rowDef);
    rendererGrid.ColumnDefinitions.Add(colDef);

    AxCVClientControlLib.AxCVVideo axCVVideo = new AxCVClientControlLib.AxCVVideo();
    _hosts.Add(new System.Windows.Forms.Integration.WindowsFormsHost());
    _hosts[i].Child = axCVVideo;
    _hosts[i].HorizontalAlignment = System.Windows.HorizontalAlignment.Stretch;
    _hosts[i].VerticalAlignment = System.Windows.VerticalAlignment.Stretch;
    border.Child = _hosts[i];
    //hosts[i].Width = (this.ActualWidth / length) - 1;
    //hosts[i].Height = (this.ActualHeight / length) - 7;

    axCVVideo.CreateControl();
    axCVVideo.Camera = Convert.ToInt16(camCombo.SelectedIndex);
    axCVVideo.XResolution = 640;
    axCVVideo.YResolution = 480;
    //System.Drawing.Rectangle rect = System.Windows.Forms.Screen.PrimaryScreen.Bounds;
    //axCVVideo.XResolution = (int)rect.Height;
    //axCVVideo.YResolution = (int)rect.Width;

    if (axCVVideo.ConnectSync())
    {
        axCVVideo.Connect();
    }
    _axCVs.Add(axCVVideo);


    if (col == _length)
    {
        col = 0;
        row++;
    }

    Grid.SetRow(border, row);
    Grid.SetColumn(border, col);
    rendererGrid.Children.Add(border);

    //Grid.SetRow(hosts[i], row);
    //Grid.SetColumn(hosts[i], col);
    //rendererGrid.Children.Add(hosts[i]);

    col++;

Answer 1

<Grid x:Name="someRandomGrid">
    <Grid.ColumnDefinitions>
        <ColumnDefinition Width="*" />
        <ColumnDefinition Width="*" />
    </Grid.ColumnDefinitions>
    <Grid.RowDefinitions>
        <RowDefinition Height="*" />
        <RowDefinition Height="*" />
    </Grid.RowDefinitions>

这将导致网格有两行和两列。行总是ActualHeight的一半，列始终是ActualWidth的一半。

如果您真的坚持，可以在代码隐藏中执行此操作：

grid.RowDefinitions.Add(new RowDefinition() { 
    Height = new GridLength(1, GridUnitType.Star) 
});

等。该数字决定了网格大小的分割方式。如果一列是1 *而另一列是2 *，则第一列将获得宽度的三分之一，第二列将获得三分之二。如果它们都是2 *，则它们都会得到宽度的2/4（a.k.a。1/2）。它将所有数字和分数相加。在XAML中没有数字的星形意味着＆＃34; 1 *＆＃34;。如果添加十几个1 *行，您将获得十几行，每行将在运行时动态调整为整个网格的实际高度的1/12。

这不是很直观，但一旦你学会了它，它就足够了。

WPF：如何动态创建可扩展的网格？

1 个答案: