C# 放大和缩小图像 实例源码

    public partial class Frm_Main : Form
    {
        public Frm_Main()
        {
            InitializeComponent();
        }
        Image myImage;
        private void button1_Click(object sender, EventArgs e)
        {
            //设置文件的类型
            openFileDialog1.Filter = "*.jpg,*.jpeg,*.bmp,*.gif,*.ico,*.png,*.tif,*.wmf|*.jpg;*.jpeg;*.bmp;*.gif;*.ico;*.png;*.tif;*.wmf";
            openFileDialog1.ShowDialog();								//打开文件对话框
            myImage = System.Drawing.Image.FromFile(openFileDialog1.FileName);	//实例化myImage类
            pictureBox1.Image = myImage;								//显示图片
            pictureBox1.Height = myImage.Height;							//设置pictureBox1的高度
            pictureBox1.Width = myImage.Width; 							//设置pictureBox1的宽度
        }

        private void button2_Click(object sender, EventArgs e)
        {
            try
            {
                pictureBox1.Height = Convert.ToInt32(myImage.Height * Convert.ToSingle(textBox1.Text.Trim()));//设置高度
                pictureBox1.Width = Convert.ToInt32(myImage.Width * Convert.ToSingle(textBox1.Text.Trim()));//设置宽度
            }
            catch { }
        }
    }

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资源文件列表

MaxMinImage.sln , 923
MaxMinImage.suo , 22016
MaxMinImage/bin/Debug/MaxMinImage.exe , 10752
MaxMinImage/bin/Debug/MaxMinImage.pdb , 24064
MaxMinImage/Frm_Main.cs , 1468
MaxMinImage/Frm_Main.designer.cs , 6156
MaxMinImage/Frm_Main.resx , 6017
MaxMinImage/MaxMinImage.csproj , 4026
MaxMinImage/obj/Debug/DesignTimeResolveAssemblyReferencesInput.cache , 7158
MaxMinImage/obj/Debug/MaxMinImage.csproj.FileListAbsolute.txt , 3747
MaxMinImage/obj/Debug/MaxMinImage.csproj.GenerateResource.Cache , 850
MaxMinImage/obj/Debug/MaxMinImage.csprojResolveAssemblyReference.cache , 1757
MaxMinImage/obj/Debug/MaxMinImage.exe , 10752
MaxMinImage/obj/Debug/MaxMinImage.Frm_Main.resources , 180
MaxMinImage/obj/Debug/MaxMinImage.pdb , 24064
MaxMinImage/obj/Debug/MaxMinImage.Properties.Resources.resources , 180
MaxMinImage/obj/Debug/TempPE/Properties.Resources.Designer.cs.dll , 4608
MaxMinImage/Program.cs , 495
MaxMinImage/Properties/AssemblyInfo.cs , 1354
MaxMinImage/Properties/Resources.Designer.cs , 2862
MaxMinImage/Properties/Resources.resx , 5612
MaxMinImage/Properties/Settings.Designer.cs , 1111
MaxMinImage/Properties/Settings.settings , 249