c#

来源：互联网发布：2016淘宝男鞋店铺排行编辑：程序博客网时间：2024/05/22 13:22

是按照MSDN教程写的。
添加控件： picturebox1,openfiledialog1,colordialog1,4个button(分别命名：close,background,clear,show_picture),checkbox1(命名：stretch)

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace tutorial1_picture_viewer
{
public partial class Form1 : Form
{

   //  this.enter += new System.Windows.Forms.KeyPressEventHandler(this.enter);     public Form1()    {        InitializeComponent();    }    private void showButton_Click(object sender, EventArgs e)    {        if (openFileDialog1.ShowDialog()==DialogResult.OK) {            pictureBox1.Load(openFileDialog1.FileName);        }    }    private void clearButton_Click(object sender, EventArgs e)    {        pictureBox1.Image = null;    }    private void backgroundButton_Click(object sender, EventArgs e)    {        if (colorDialog1.ShowDialog() == DialogResult.OK)            pictureBox1.BackColor = colorDialog1.Color;    }    private void closeButton_Click(object sender, EventArgs e)    {        this.Close();    }    private void checkBox1_CheckedChanged(object sender, EventArgs e)    {        if (checkBox1.Checked)            pictureBox1.SizeMode = PictureBoxSizeMode.StretchImage;        else            pictureBox1.SizeMode = PictureBoxSizeMode.Normal;    }    private void enter(object sender, KeyEventArgs e)//事件设置在form上，form的keyPreview属性要设置成true    {        if (e.KeyValue == 13) { //按下enter键后，自动打开文件选择框            e.Handled = true;            openFileDialog1.ShowDialog();            pictureBox1.Load(openFileDialog1.FileName);        }        if (e.KeyValue == 27) {//按下esc后，自动关闭文件选择框            e.Handled = true;        this.DialogResult = DialogResult.Cancel;//这个要注意        }    }    private void entershowButton_KeyPress(object sender, KeyPressEventArgs e)    {        if (e.KeyChar == 13)        { e.Handled = true;            openFileDialog1.ShowDialog();        }    }    private void Form1_Load(object sender, EventArgs e)    {    }}

}

0 0