一个改变图片大小的东东

Form1.cs

 

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Text.RegularExpressions;

namespace BmpOper
...{
    public partial class Form1 : Form
    ...{
        string picPath;

        public Form1()
        ...{
            InitializeComponent();
            picPath = "";
        }

        private void open_Click(object sender, EventArgs e)
        ...{
            //open source picture and save the path of it to "picPath":

            if (openPicDialog.ShowDialog()== DialogResult.OK)
            ...{
                picPath=openPicDialog.FileName;
                showResult.ImageLocation = picPath;  //preview
            }
        }

        private void save_Click(object sender, EventArgs e)
        ...{
            //get Current directory and setup the name of Thumbnail:
            string savePath = picPath.Substring(0, picPath.LastIndexOf(".")) + "Thum.jpg";//get the dir
            
            //Transfer the Function :
            GenerateThum(savePath);
        }

        private void GenerateThum(string savePath)          //Generate the Thumbnail of open picture
        ...{
            if (picPath != "")
            ...{
                Validate the TextBox#region Validate the TextBox

                string tempW = inputWidth.Text;
                string tempH = inputHeigh.Text;
                if (!Regex.IsMatch(tempW, @"^[0-9]+$") && Regex.IsMatch(tempH, @"^[0-9]+$"))
                ...{
                    MessageBox.Show("Error,pleae input a number", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
                    inputWidth.Focus();
                }

                #endregion

                //get the width&height&savepath
                int width = Int32.Parse(inputWidth.Text);
                int height = Int32.Parse(inputHeigh.Text);
                string ThumbPath = savePath;

                //Generate
                Bitmap newBmp = new Bitmap(picPath);
                Image Thumbnail = newBmp.GetThumbnailImage(width,height, null, IntPtr.Zero);

                //Save
                Thumbnail.Save(ThumbPath, System.Drawing.Imaging.ImageFormat.Jpeg);
            }
        }

        private void saveAs_Click(object sender, EventArgs e)       //save as
        ...{
            if (savePicDialog.ShowDialog() == DialogResult.OK)
            ...{
                string savePath = savePicDialog.FileName;
                GenerateThum(savePath);
            }
        }
    }
}



/**//*
 * Crazy7
 * @ 2007/04/08 pm
 * A program for generate thumbnail of a picture.
*/

 

Form1.Designer.cs：

 

namespace BmpOper
...{
    partial class Form1
    ...{
        /**//// <summary>
        /// Required designer variable.
        /// </summary>
        private System.ComponentModel.IContainer components = null;

        /**//// <summary>
        /// Clean up any resources being used.
        /// </summary>
        /// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
        protected override void Dispose(bool disposing)
        ...{
            if (disposing && (components != null))
            ...{
                components.Dispose();
            }
            base.Dispose(disposing);
        }

        Windows Form Designer generated code#region Windows Form Designer generated code

        /**//// <summary>
        /// Required method for Designer support - do not modify
        /// the contents of this method with the code editor.
        /// </summary>
        private void InitializeComponent()
        ...{
            this.open = new System.Windows.Forms.Button();
            this.openPicDialog = new System.Windows.Forms.OpenFileDialog();
            this.showResult = new System.Windows.Forms.PictureBox();
            this.save = new System.Windows.Forms.Button();
            this.inputHeigh = new System.Windows.Forms.TextBox();
            this.inputWidth = new System.Windows.Forms.TextBox();
            this.savePicDialog = new System.Windows.Forms.SaveFileDialog();
            this.saveAs = new System.Windows.Forms.Button();
            this.label1 = new System.Windows.Forms.Label();
            this.label2 = new System.Windows.Forms.Label();
            ((System.ComponentModel.ISupportInitialize)(this.showResult)).BeginInit();
            this.SuspendLayout();
            // 
            // open
            // 
            this.open.Location = new System.Drawing.Point(192, 89);
            this.open.Name = "open";
            this.open.Size = new System.Drawing.Size(94, 24);
            this.open.TabIndex = 0;
            this.open.Text = "Select Picture";
            this.open.UseVisualStyleBackColor = true;
            this.open.Click += new System.EventHandler(this.open_Click);
            // 
            // openPicDialog
            // 
            this.openPicDialog.Filter = "jpg|*.jpg|bmp|*.bmp";
            // 
            // showResult
            // 
            this.showResult.Location = new System.Drawing.Point(12, 89);
            this.showResult.Name = "showResult";
            this.showResult.Size = new System.Drawing.Size(174, 161);
            this.showResult.SizeMode = System.Windows.Forms.PictureBoxSizeMode.StretchImage;
            this.showResult.TabIndex = 1;
            this.showResult.TabStop = false;
            // 
            // save
            // 
            this.save.Location = new System.Drawing.Point(192, 159);
            this.save.Name = "save";
            this.save.Size = new System.Drawing.Size(94, 24);
            this.save.TabIndex = 2;
            this.save.Text = "Save Picutre";
            this.save.UseVisualStyleBackColor = true;
            this.save.Click += new System.EventHandler(this.save_Click);
            // 
            // inputHeigh
            // 
            this.inputHeigh.Location = new System.Drawing.Point(91, 39);
            this.inputHeigh.Name = "inputHeigh";
            this.inputHeigh.Size = new System.Drawing.Size(41, 23);
            this.inputHeigh.TabIndex = 3;
            this.inputHeigh.Text = "75";
            // 
            // inputWidth
            // 
            this.inputWidth.Location = new System.Drawing.Point(22, 39);
            this.inputWidth.Name = "inputWidth";
            this.inputWidth.Size = new System.Drawing.Size(42, 23);
            this.inputWidth.TabIndex = 4;
            this.inputWidth.Text = "100";
            // 
            // savePicDialog
            // 
            this.savePicDialog.Filter = "jpg|*.jpg";
            // 
            // saveAs
            // 
            this.saveAs.Location = new System.Drawing.Point(192, 227);
            this.saveAs.Name = "saveAs";
            this.saveAs.Size = new System.Drawing.Size(94, 23);
            this.saveAs.TabIndex = 5;
            this.saveAs.Text = "Save As";
            this.saveAs.UseVisualStyleBackColor = true;
            this.saveAs.Click += new System.EventHandler(this.saveAs_Click);
            // 
            // label1
            // 
            this.label1.AutoSize = true;
            this.label1.Location = new System.Drawing.Point(12, 23);
            this.label1.Name = "label1";
            this.label1.Size = new System.Drawing.Size(39, 13);
            this.label1.TabIndex = 6;
            this.label1.Text = "Width:";
            // 
            // label2
            // 
            this.label2.AutoSize = true;
            this.label2.Location = new System.Drawing.Point(79, 23);
            this.label2.Name = "label2";
            this.label2.Size = new System.Drawing.Size(42, 13);
            this.label2.TabIndex = 7;
            this.label2.Text = "Height:";
            // 
            // Form1
            // 
            this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
            this.ClientSize = new System.Drawing.Size(292, 273);
            this.Controls.Add(this.label2);
            this.Controls.Add(this.label1);
            this.Controls.Add(this.saveAs);
            this.Controls.Add(this.inputWidth);
            this.Controls.Add(this.inputHeigh);
            this.Controls.Add(this.save);
            this.Controls.Add(this.showResult);
            this.Controls.Add(this.open);
            this.Name = "Form1";
            this.Text = "Crazy7-ThumbnailGen";
            ((System.ComponentModel.ISupportInitialize)(this.showResult)).EndInit();
            this.ResumeLayout(false);
            this.PerformLayout();

        }

        #endregion

        private System.Windows.Forms.Button open;
        private System.Windows.Forms.OpenFileDialog openPicDialog;
        private System.Windows.Forms.PictureBox showResult;
        private System.Windows.Forms.Button save;
        private System.Windows.Forms.TextBox inputHeigh;
        private System.Windows.Forms.TextBox inputWidth;
        private System.Windows.Forms.SaveFileDialog savePicDialog;
        private System.Windows.Forms.Button saveAs;
        private System.Windows.Forms.Label label1;
        private System.Windows.Forms.Label label2;
    }
}