winform 系统对话框、右键菜单、状态栏（补充）

一、状态栏

效果：

代码：

    public partial class Form3 : Form
    {
        // 状态标签
        ToolStripStatusLabel toolStripStatusLabel1;
        public Form3()
        {
            InitializeComponent();
            toolStripStatusLabel1 = new ToolStripStatusLabel();
            toolStripStatusLabel1.Image = Properties.Resources.Green;
            toolStripStatusLabel1.Name = "toolStripStatusLabel1";
            toolStripStatusLabel1.Size = new Size(200, 17);
            toolStripStatusLabel1.Text = "状态";

            statusStrip1.Items.Add(toolStripStatusLabel1);
        }
    }

二、右键菜单

效果：

代码：

        // listBox 鼠标释放时触发
        private void listBox1_MouseUp(object sender, MouseEventArgs e)
        {
            if (e.Button == MouseButtons.Right)
            {
                // 坐标处，项的索引
                int index = listBox1.IndexFromPoint(e.Location);
                if (index >= 0)
                {
                    listBox1.SetSelected(index, true);
                    // 编辑，删除可以用
                    MenuItem_Edit.Enabled = true;
                    MenuItem_Del.Enabled = true;
                }
                else
                {
                    listBox1.ClearSelected();
                    MenuItem_Edit.Enabled = false;
                    MenuItem_Del.Enabled = false;
                }
                // 显示有菜单
                this.contextMenuStrip1.Show(listBox1, e.Location);
            }
        }

 

三、系统对话框

效果：

代码：

        // 打开文件对话框
        private void button1_Click(object sender, EventArgs e)
        {
            OpenFileDialog dlg = new OpenFileDialog();
            dlg.DefaultExt = ".cs";
            dlg.Filter = "c#源文件 | *.cs";
            dlg.InitialDirectory = Path.GetFullPath(".");
            if (dlg.ShowDialog() == DialogResult.OK)
            {
                string fileName = dlg.FileName;
                MessageBox.Show("选中了:"+fileName);
            }
        }

        // 保存文件
        private void button2_Click(object sender, EventArgs e)
        {
            SaveFileDialog dlg = new SaveFileDialog();
            dlg.FileName = "新的文本文件";
            dlg.DefaultExt = ".txt";
            dlg.Filter = "Text document (.txt) | *.txt";
            if (dlg.ShowDialog() == DialogResult.OK)
            {
                string fileName = dlg.FileName;
                MessageBox.Show("选中了:" + fileName);
            }
        }

        // 选中目录
        private void button3_Click(object sender, EventArgs e)
        {
            FolderBrowserDialog dlg = new FolderBrowserDialog();
            dlg.SelectedPath = Path.GetFullPath(".");
            if (dlg.ShowDialog() == DialogResult.OK)
            {
                string path = dlg.SelectedPath;
                MessageBox.Show("选中了:" + path);
            }
        }

        //  选择颜色 对话框
        private void button4_Click(object sender, EventArgs e)
        {
            ColorDialog MyDialog = new ColorDialog();
            // Keeps the user from selecting a custom color.
            MyDialog.AllowFullOpen = false;
            // Allows the user to get help. (The default is false.)
            MyDialog.ShowHelp = true;
            // Sets the initial color select to the current text color.
            MyDialog.Color = button4.ForeColor;

            // Update the text box color if the user clicks OK 
            if (MyDialog.ShowDialog() == DialogResult.OK)
                button4.ForeColor = MyDialog.Color; 
        }

        // 选择字体 对话框
        private void button5_Click(object sender, EventArgs e)
        {
            FontDialog fontdig = new FontDialog();
            fontdig.ShowColor = true;
            fontdig.Font = button5.Font;
            fontdig.Color = button5.ForeColor;

            if (fontdig.ShowDialog() != DialogResult.Cancel)
            {
                button5.Font = fontdig.Font;
                button5.ForeColor = fontdig.Color;
            }
        }