如何在表单中放置动态项？

Question

c＃中是否存在类似css - "float: left | right | none | inherit"的内容？ 我希望在我的表单中显示 - TextBox以及每个TextBox - PictureBox下方。所以我不知道每个TextBox的大小，它可能会有所不同，结果我的PictureBoxes封面TextBoxes ....

 static int k = 1;

 for (int att = 0; att < feed.response.items[i].attachments.Count(); att++)
 {
     string switchCase = feed.response.items[i].attachments[att].type;
     switch (switchCase)
     {
         case "photo":                                          
             TextBox text = new TextBox();
             text.Text =Encoding.UTF8.GetString(Encoding.Default.GetBytes(feed.response.items[i].text));
             Point p = new Point(20, 30 * k);
             text.Location = p;
             this.Controls.Add(text);

             PictureBox mypic = new PictureBox();
             mypic.ImageLocation =  feed.response.items[i].attachments[att].photo.photo_130;
             mypic.Size = new Size(100, 100);
             Point g = new Point(40, 160 * k);
             mypic.Location = g;
             this.Controls.Add(mypic);
             k++;
             break;
....
    }
}

Answer 1

如Peter Duniho所示，您可以使用两个TableLayoutPanel，一个在设计时添加到您的表单。另一个是动态创建的，并使用正确的控件进行填充，以实现您的需求。你的代码看起来像这样：

private void AddOne()
{
    // create a new tablelayoutpanel
    // with 2 rows, 1 column
    var table = new TableLayoutPanel();
    table.RowCount = 2;
    table.RowStyles.Add(new RowStyle());
    table.RowStyles.Add(new RowStyle());
    table.ColumnCount = 1;
    table.Dock = DockStyle.Fill; // take all space

    // create a label, notice the Anchor setting
    var lbl = new Label();
    lbl.Text = "lorem ipsum\r\nnext line\r\nthree";
    lbl.Anchor = AnchorStyles.Left | AnchorStyles.Right;
    lbl.AutoSize = true;
    // add to the first row
    table.Controls.Add(lbl, 0, 0);

    // create the picturebox
    var pict = new PictureBox();
    pict.Image = Bitmap.FromFile(@"demo.png");
    pict.Anchor = AnchorStyles.Left | AnchorStyles.Right;
    pict.SizeMode = PictureBoxSizeMode.Zoom;
    // add to the second row
    table.Controls.Add(pict, 0, 1);

    //add the table to the main table that is on the form
    mainTable.Controls.Add(table, 0, mainTable.RowCount);
    // increase the rowcount...
    mainTable.RowCount++;

}

您将使用Dock和Anchor属性以及AutoSize属性让框架的布局引擎为您完成所有繁重工作。

你最终会看到这样的东西：