Question

我正在编写一个C＃.NET WinForms应用程序，我必须在其中创建一个用户控件的新实例，该实例将包含多个控件（TextBox，Button，CheckBox等）。必须一次创建一个用户控件并堆叠（垂直排列）。

我尝试过的选项：

FlowLayoutPanel 没有可用于跟踪用户点击“添加新项”按钮时添加的许多用户控件的索引值。

DataGridView 没有适合用户控件的列类型。虽然DataGridView的功能更接近我的需要，但我没有找到任何代码来添加UserControl类型的列。

有什么想法吗？

Answer 1

也许TableLayoutPanel是你需要的。

    protected override void OnLoad( EventArgs e )
    {
        var tableLayoutPanel = new TableLayoutPanel
        {
            Dock = DockStyle.Fill,
            AutoScroll = true
        };

        Controls.Add( tableLayoutPanel );

        // To reset row and columns use this

        // Reset row count and styles
        tableLayoutPanel.RowCount = 0;
        tableLayoutPanel.RowStyles.Clear();

        // Reset columns count and styles
        tableLayoutPanel.ColumnCount = 0;
        tableLayoutPanel.ColumnStyles.Clear();

        // For horizontal alignment we need add empty columns to fill space
        // |___emty fill___|Realcoulmn|___empty fill___|
        tableLayoutPanel.ColumnCount = 3;
        tableLayoutPanel.ColumnStyles.Add( new ColumnStyle( SizeType.Percent, 100 ) );  // Fill space
        tableLayoutPanel.ColumnStyles.Add( new ColumnStyle( SizeType.AutoSize ) );      // Real column with controls
        tableLayoutPanel.ColumnStyles.Add( new ColumnStyle( SizeType.Percent, 100 ) );  // Fill space

        tableLayoutPanel.SuspendLayout();

        for ( var i = 0; i < 5; i++ )
        {
            AddControl( tableLayoutPanel, 1 );
        }

        tableLayoutPanel.ResumeLayout( true );
    }

    public void IterateOverControls( TableLayoutPanel table )
    {
        // Iterate over all rows
        for ( var i = 0; i < table.RowCount; i++ )
        {
            var control = table.GetControlFromPosition( 1, i ); // Column 1
        }
    }

    public void AddControl( TableLayoutPanel tableLayoutPanel, int column )
    {
        var btn = new Button { Text = "Hello vertical stack!" };
        btn.Click += button_Click;

        // Add row to tableLayoutPanel and set it style
        tableLayoutPanel.RowCount++;
        tableLayoutPanel.RowStyles.Add( new RowStyle( SizeType.Absolute, btn.Height + 5 ) );

        // Add control to stack
        tableLayoutPanel.Controls.Add( btn, column, tableLayoutPanel.RowCount - 1 );
    }

    private void button_Click( object sender, EventArgs e )
    {
        var btnControl = sender as Control;
        if ( btnControl == null )
            return;

        var tableLayoutPanel = btnControl.Parent as TableLayoutPanel;
        if ( tableLayoutPanel == null )
            return;

        AddControl( tableLayoutPanel, 1 );
    }
}

C＃NET WinForms替代DataGridView以显示用户控件

1 个答案: