C#第十周功课之打开对话框和加载动态图片并给与提示

C#--第十周作业之打开对话框和加载动态图片并给与提示

using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Linq;using System.Text;using System.Windows.Forms;namespace WindowsFormsApplication2{    public partial class Form1 : Form    {        public Form1()        {            InitializeComponent();        }        private void Form1_Load(object sender, EventArgs e)        {            pictureBox1.Image = Image.FromFile("u=511638845,3861741470&fm=0&gp=0[1].jpg");            toolTip1.SetToolTip(pictureBox1, "自然风光");        }        private void pictureBox1_Click(object sender, EventArgs e)        {        }        private void toolTip1_Popup(object sender, PopupEventArgs e)        {        }    }}

注意：因为要用到文件的读写，所以在开头，要用到using System.IO;

using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Linq;using System.Text;using System.IO;using System.Windows.Forms;namespace WindowsFormsApplication5{    public partial class Form1 : Form    {        public Form1()        {            InitializeComponent();        }        private void Form1_Load(object sender, EventArgs e)        {        }        private void saveFileDialog1_FileOk(object sender, CancelEventArgs e)        {        }        private void openFileDialog1_FileOk(object sender, CancelEventArgs e)        {               }        private void button1_Click(object sender, EventArgs e)        {            this.saveFileDialog1.Filter = "*.txt|*.txt";            this.saveFileDialog1.ShowDialog();            string file = this.saveFileDialog1.FileName;            if (string.IsNullOrEmpty(file)) return;            //以下为写字符到文本文件，需要添加System.IO引用            //创建一个文件流            FileStream fs = new FileStream(file, FileMode.OpenOrCreate,                FileAccess.Write);            //创建一个StreamWriter对象            StreamWriter sw = new StreamWriter(fs);            sw.Write(this.textBox1.Text);            //释放StreamWriter对象,文件流对象            sw.Dispose();            fs.Dispose();        }        private void button2_Click(object sender, EventArgs e)        {            this.openFileDialog1.Filter = "*.txt|*.txt";            this.openFileDialog1.ShowDialog();            string file = this.openFileDialog1.FileName;            if (string.IsNullOrEmpty(file)) return;            //以下为写字符到文本文件，需要添加System.IO引用            //创建一个文件流            FileStream fs = new FileStream(file, FileMode.Open,                FileAccess.Read);            //创建一个StreamWriter对象            StreamReader sr = new StreamReader(fs);            this.textBox1.Text = sr.ReadToEnd();            //释放StreamWriter对象,文件流对象            sr.Dispose();            fs.Dispose();        }    }}