查找行控制指标加入到TableLayoutPanel中 [英] Find row index of control added to TableLayoutPanel

问题描述

我要采取行动时，控件添加到Windows窗体一个TableLayoutPanel。我处理控制的ParentChanged事件，以找出是否该控件添加到父（这里TableLayoutPanel中），但我收到指数为-1。

的TableLayoutPanel吨;

 私人无效的button1_Click（对象发件人，EventArgs的）
{
    // this.Text = tableLayoutPanel1.Height.ToString（）;

    T =新的TableLayoutPanel（）;
    t.Dock = DockStyle.Fill;
    //t.AutoSizeMode = System.Windows.Forms.AutoSizeMode.GrowAndShrink;
    t.AutoSize = TRUE;
    //t.AutoSizeMode = System.Windows.Forms.AutoSizeMode.GrowAndShrink;
    t.RowStyles.Add（新RowStyle（SizeType.AutoSize））;
    t.RowStyles.Add（新RowStyle（SizeType.AutoSize））;
    t.ColumnStyles.Add（新ColumnStyle（SizeType.Percent，50））;
    t.ColumnStyles.Add（新ColumnStyle（SizeType.Percent，50））;
    panel1.Controls.Add（T）;

    t.CellBorderStyle = TableLayoutPanelCellBorderStyle.Single;


    标签LBL =新的Label（）;
    lbl.ParentChanged + =新的EventHandler（lbl_ParentChanged）;
    lbl.Margin =新System.Windows.Forms.Padding（20，150，20，20）;
    lbl.Text =你好;
    t.Controls.Add（LBL，0，0）;
}

无效lbl_ParentChanged（对象发件人，EventArgs的）
{
    标签LBL =（标签）发送;
    INT行= t.GetRow（LBL）; //这里我得到行= -1 ??????
}
 

我需要排至该控件添加号码。该控制应采取行动独立当它被添加到所述的TableLayoutPanel的。如何得到它？

 无效t_ControlAdded（对象发件人，ControlEventArgs E）
    {
        INT行= t.GetRow（e.Control）; //这也给排= -1
    }
 

解决方案

您需要增加行数/列数，如果添加新的 RowStyles / ColumnStyles 您的TableLayoutPanel 。在此之后，你可以很容易地使用 GetPositionFromControl（控制值）方法。

我觉得， ControlAdded 事件是在这种情况下，更好的办法。试试看吧。

做这样的：

 公共部分类Form1中：形态
{
    私人TableLayoutPanel中板;

    公共Form1中（）
    {
        的InitializeComponent（）;
        InitializeTableLayoutPanel（）;
    }

    私人无效Form1_Load的（对象发件人，EventArgs的）
    {
        的AddControl（0，0）;
        的AddControl（0，1）;
        的AddControl（1，0）;
        的AddControl（1，1）;
        的AddControl（2，0）;
        的AddControl（2，1）;
        的AddControl（3，0）;
        的AddControl（3，1）;
    }

    私人无效InitializeTableLayoutPanel（）
    {
        面板=新的TableLayoutPanel（）;
        panel.Dock = DockStyle.Fill;
        panel.AutoSize = TRUE;
        panel.ColumnStyles.Add（新ColumnStyle（SizeType.Percent，50））;
        panel.ColumnStyles.Add（新ColumnStyle（SizeType.Percent，50））;
        panel.ColumnCount = 2;
        panel.RowStyles.Add（新RowStyle（SizeType.AutoSize））;
        panel.RowStyles.Add（新RowStyle（SizeType.AutoSize））;
        panel.RowCount = 2;

        panel.CellBorderStyle = TableLayoutPanelCellBorderStyle.Single;
        panel.ControlAdded + =新ControlEventHandler（OnControlAdded）;

        this.Controls.Add（板）;
    }

    私人无效OnControlAdded（对象发件人，ControlEventArgs E）
    {
        如果（e.Control！= NULL）
        {
            INT列= panel.GetPositionFromControl（e.Control）.COLUMN;
            INT行= panel.GetPositionFromControl（e.Control）.Row;

            的MessageBox.show（的String.Format（列：{0}，行：{1}，列，行））;
        }
    }

    ///＆LT;总结＆gt;
    ///添加到控制面板
    ///＆LT; /总结＆gt;
    ///＆LT; PARAM NAME =栏＆GT;列位置＆LT; /参数＆GT;
    ///＆LT; PARAM NAME =行＆GT;行位置和LT; /参数＆GT;
    私人无效的AddControl（INT列，诠释行）
    {
        标签标签=新的Label（）;
        label.Font =新的字体（新的FontFamily（德罗伊德桑），20，FontStyle.Bold）;
        label.Name =标签;
        label.Text =呐喊！;

        如果（列＆LT; panel.ColumnCount和放大器;＆安培;行＆LT; panel.RowCount）
            panel.Controls.Add（标签，列，行）;
        其他
            抛出新ArgumentOutOfRangeException（）;
    }
}
 

I need to take an action when a control is added to a TableLayoutPanel in Windows Forms. I am handling ParentChanged event of the control to find out if the control is added to a parent(here TableLayoutPanel), but the index I receive is -1.

TableLayoutPanel t;

private void button1_Click(object sender, EventArgs e)
{
    // this.Text = tableLayoutPanel1.Height.ToString();

    t = new TableLayoutPanel();
    t.Dock = DockStyle.Fill;
    //t.AutoSizeMode = System.Windows.Forms.AutoSizeMode.GrowAndShrink;
    t.AutoSize = true;
    //t.AutoSizeMode = System.Windows.Forms.AutoSizeMode.GrowAndShrink;
    t.RowStyles.Add(new RowStyle(SizeType.AutoSize));
    t.RowStyles.Add(new RowStyle(SizeType.AutoSize));
    t.ColumnStyles.Add(new ColumnStyle(SizeType.Percent, 50));
    t.ColumnStyles.Add(new ColumnStyle(SizeType.Percent, 50));
    panel1.Controls.Add(t);

    t.CellBorderStyle = TableLayoutPanelCellBorderStyle.Single;


    Label lbl = new Label();
    lbl.ParentChanged += new EventHandler(lbl_ParentChanged);
    lbl.Margin = new System.Windows.Forms.Padding(20, 150, 20, 20);
    lbl.Text = "Hello";
    t.Controls.Add(lbl, 0, 0);
}

void lbl_ParentChanged(object sender, EventArgs e)
{
    Label lbl = (Label)sender;
    int row = t.GetRow(lbl);//here I get row = -1 ??????
}

I need row number to which the control is added. The control should take action independent of when it is added to the TableLayoutPanel. How to get it ?

    void t_ControlAdded(object sender, ControlEventArgs e)
    {
        int row = t.GetRow(e.Control);      //this also gives row = -1      
    }

解决方案

You need to increment RowCount/ColumnCount, if you add new RowStyles/ColumnStyles to your TableLayoutPanel. After this you can easily use the GetPositionFromControl(Control value) Method.

I think, ControlAdded Event is the better approach in this case. Give it a try.

Do it like this:

public partial class Form1 : Form
{
    private TableLayoutPanel panel;

    public Form1()
    {
        InitializeComponent();
        InitializeTableLayoutPanel();
    }

    private void Form1_Load(object sender, EventArgs e)
    {
        AddControl(0, 0);
        AddControl(0, 1);
        AddControl(1, 0);
        AddControl(1, 1);
        AddControl(2, 0);
        AddControl(2, 1);
        AddControl(3, 0);
        AddControl(3, 1);
    }

    private void InitializeTableLayoutPanel()
    {
        panel = new TableLayoutPanel();
        panel.Dock = DockStyle.Fill;
        panel.AutoSize = true;
        panel.ColumnStyles.Add(new ColumnStyle(SizeType.Percent, 50));
        panel.ColumnStyles.Add(new ColumnStyle(SizeType.Percent, 50));
        panel.ColumnCount = 2;
        panel.RowStyles.Add(new RowStyle(SizeType.AutoSize));
        panel.RowStyles.Add(new RowStyle(SizeType.AutoSize));
        panel.RowCount = 2;

        panel.CellBorderStyle = TableLayoutPanelCellBorderStyle.Single;
        panel.ControlAdded += new ControlEventHandler(OnControlAdded);

        this.Controls.Add(panel);
    }

    private void OnControlAdded(object sender, ControlEventArgs e)
    {
        if (e.Control != null)
        {
            int column = panel.GetPositionFromControl(e.Control).Column;
            int row = panel.GetPositionFromControl(e.Control).Row;

            MessageBox.Show(string.Format("Column: {0}, Row: {1}", column, row));
        }
    }

    /// <summary>
    /// Add Control to Panel
    /// </summary>
    /// <param name="column">column position</param>
    /// <param name="row">row position</param>
    private void AddControl(int column, int row)
    {
        Label label = new Label();
        label.Font = new Font(new FontFamily("Droid Sans"), 20, FontStyle.Bold);
        label.Name = "label";
        label.Text = "Whoop!";

        if (column < panel.ColumnCount && row < panel.RowCount)
            panel.Controls.Add(label, column, row);
        else
            throw new ArgumentOutOfRangeException();
    }
}

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