本文主要介绍了C#入门到精通之C#Winform实现动态生成控件，通过具体的内容向大家展现，希望对大家C#的学习有所帮助。

概述

动态创建添加控件，可以在一个大容器里一次性放入多个控件。例：根据文本框中输入的数字 给flowLayoutPanel1 添加多少个button。窗体设计中，需要什么控件就从工具箱里拖出一个控件“挂”在窗体上。其实，窗体上的控件，不但可以“拖”，还可以用代码动态生成。动态生成控件，对需要相同的大量的控件还是比较有用的。

实现方式

1、加载数据，往panel添加Label 控件。

private void LoadRoomType()

        {

            DataTable dtRoomType = _roomTypeBLL.GetModelList("", "Code");

            pnlRoomType.Controls.Clear();

            int padding = 5;

            int x = padding, y = padding;

            pnlRoom.Controls.Clear();

            foreach (DataRow item in dtRoomType.Rows)

            {

                Label lbl = new Label();

                lbl.Text = string.Format("{0}", item["Names"]);

                lbl.Image = btnRoomType.Image;

                lbl.Cursor = Cursors.IBeam;

                lbl.TextAlign = btnRoomType.TextAlign;

                lbl.Font = btnRoomType.Font;

                lbl.ForeColor = btnRoomType.ForeColor;

                lbl.Size = btnRoomType.Size;

                lbl.Location = new Point(x, y);

                lbl.Tag = item;

                lbl.Click += new EventHandler(lbl_Click);

                lbl.MouseEnter += new EventHandler(lbl_MouseEnter);

                lbl.MouseLeave += new EventHandler(lbl_MouseLeave);

                x += lbl.Width + padding;

                if (x + lbl.Width > pnlRoomType.Width)

                {

                    x = padding;

                    y += lbl.Height + padding;

                }

                pnlRoomType.Controls.Add(lbl);

            }

            int height = y + (x != padding ? pnlRoomType.Height : 0) + padding;

            int addHeight = height - pnlRoomType.Height;

            pnlRoom.Top = pnlRoom.Top + addHeight;

            pnlRoom.Height = pnlRoom.Height - addHeight;

            pnlRoomType.Height = pnlRoomType.Height + addHeight;

            if (dtRoomType.Rows.Count > 0)

                LoadRoomByTypeID(dtRoomType.Rows[0], 0);

        }

2、定义Label 的点击事件。

void lbl_Click(object sender, EventArgs e)

        {

            try

            {

                Label lbl = sender as Label;

                DataRow row = lbl.Tag as DataRow;

                LoadRoomByTypeID(row, 0);

            }

            catch (Exception ex)

            {

               ;

            }

        }

3、定义Label 的鼠标事件。

#region lbl_MouseLeave

        void lbl_MouseLeave(object sender, EventArgs e)

        {

            Label lbl = sender as Label;

            lbl.Font = new Font(lbl.Font, FontStyle.Regular);

            lbl.Cursor = Cursors.Default;

            lbl.ForeColor = btnRoomType.ForeColor;

        }

        #endregion

        #region lbl_MouseEnter

        void lbl_MouseEnter(object sender, EventArgs e)

        {

            Label lbl = sender as Label;

            lbl.Font = new  Font(lbl.Font, FontStyle.Bold);

            lbl.Cursor = Cursors.IBeam;

        }

        #endregion

效果

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