c#如何wmf图片转换成png图片_C#图片格式转换(支持bmp/gif/jpeg/png/tiff/wmf文件)

【实例简介】

【实例截图】

【核心代码】

using System;

using System.Drawing;

using System.Collections;

using ponentModel;

using System.Windows.Forms;

using System.Data;

namespace Image

{

///

/// Form1 的摘要说明。

///

public class Form1 : System.Windows.Forms.Form

{

private System.Windows.Forms.PictureBox pictureBox1;

private System.Windows.Forms.Button button1;

private System.Windows.Forms.Button button2;

private System.Windows.Forms.OpenFileDialog openFileDialog1;

private System.Windows.Forms.SaveFileDialog saveFileDialog1;

private System.Windows.Forms.GroupBox groupBox1;

private System.Windows.Forms.RadioButton radioButton1;

private System.Windows.Forms.RadioButton radioButton2;

private System.Windows.Forms.RadioButton radioButton3;

private System.Windows.Forms.RadioButton radioButton4;

private System.Windows.Forms.RadioButton radioButton5;

private System.Windows.Forms.RadioButton radioButton6;

///

/// 必需的设计器变量。

///

private ponentModel.Container components = null;

public Form1()

{

//

// Windows 窗体设计器支持所必需的

//

InitializeComponent();

//

// TODO: 在 InitializeComponent 调用后添加任何构造函数代码

//

}

///

/// 清理所有正在使用的资源。

///

protected override void Dispose( bool disposing )

{

if( disposing )

{

if (components != null)

{

components.Dispose();

}

}

base.Dispose( disposing );

}

#region Windows 窗体设计器生成的代码

///

/// 设计器支持所需的方法 - 不要使用代码编辑器修改

/// 此方法的内容。

///

private void InitializeComponent()

{

this.pictureBox1 = new System.Windows.Forms.PictureBox();

this.button1 = new System.Windows.Forms.Button();

this.button2 = new System.Windows.Forms.Button();

this.openFileDialog1 = new System.Windows.Forms.OpenFileDialog();

this.saveFileDialog1 = new System.Windows.Forms.SaveFileDialog();

this.groupBox1 = new System.Windows.Forms.GroupBox();

this.radioButton6 = new System.Windows.Forms.RadioButton();

this.radioButton5 = new System.Windows.Forms.RadioButton();

this.radioButton4 = new System.Windows.Forms.RadioButton();

this.radioButton3 = new System.Windows.Forms.RadioButton();

this.radioButton2 = new System.Windows.Forms.RadioButton();

this.radioButton1 = new System.Windows.Forms.RadioButton();

this.groupBox1.SuspendLayout();

this.SuspendLayout();

//

// pictureBox1

//

this.pictureBox1.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D;

this.pictureBox1.Location = new System.Drawing.Point(8, 8);

this.pictureBox1.Name = "pictureBox1";

this.pictureBox1.Size = new System.Drawing.Size(280, 222);

this.pictureBox1.SizeMode = System.Windows.Forms.PictureBoxSizeMode.StretchImage;

this.pictureBox1.TabIndex = 0;

this.pictureBox1.TabStop = false;

//

// button1

//

this.button1.Location = new System.Drawing.Point(296, 8);

this.button1.Name = "button1";

this.button1.Size = new System.Drawing.Size(96, 23);

this.button1.TabIndex = 1;

this.button1.Text = "浏览图像";

this.button1.Click = new System.EventHandler(this.button1_Click);

//

// button2

//

this.button2.Location = new System.Drawing.Point(296, 32);

this.button2.Name = "button2";

this.button2.Size = new System.Drawing.Size(96, 23);

this.button2.TabIndex = 2;

this.button2.Text = "保存图像";

this.button2.Click = new System.EventHandler(this.button2_Click);

//

// openFileDialog1

//

this.openFileDialog1.Filter = "Image files (JPeg, Gif, Bmp, etc.)|*.jpg;*.jpeg;*.gif;*.bmp;*.tif; *.tiff; *.png|"

" JPeg files (*.jpg;*.jpeg)|*.jpg;*.jpeg |GIF files (*.gif)|*.gif |BMP files (*.b"

"mp)|*.bmp|Tiff files (*.tif;*.tiff)|*.tif;*.tiff|Png files (*.png)| *.png |All f"

"iles (*.*)|*.*";

//

// groupBox1

//

this.groupBox1.Controls.Add(this.radioButton6);

this.groupBox1.Controls.Add(this.radioButton5);

this.groupBox1.Controls.Add(this.radioButton4);

this.groupBox1.Controls.Add(this.radioButton3);

this.groupBox1.Controls.Add(this.radioButton2);

this.groupBox1.Controls.Add(this.radioButton1);

this.groupBox1.Location = new System.Drawing.Point(296, 64);

this.groupBox1.Name = "groupBox1";

this.groupBox1.Size = new System.Drawing.Size(96, 168);

this.groupBox1.TabIndex = 3;

this.groupBox1.TabStop = false;

this.groupBox1.Text = "图像保存格式";

//

// radioButton6

//

this.radioButton6.Location = new System.Drawing.Point(8, 144);

this.radioButton6.Name = "radioButton6";

this.radioButton6.Size = new System.Drawing.Size(72, 16);

this.radioButton6.TabIndex = 5;

this.radioButton6.Text = "Wmf格式";

//

// radioButton5

//

this.radioButton5.Location = new System.Drawing.Point(8, 120);

this.radioButton5.Name = "radioButton5";

this.radioButton5.Size = new System.Drawing.Size(72, 16);

this.radioButton5.TabIndex = 4;

this.radioButton5.Text = "Tiff格式";

//

// radioButton4

//

this.radioButton4.Location = new System.Drawing.Point(8, 96);

this.radioButton4.Name = "radioButton4";

this.radioButton4.Size = new System.Drawing.Size(72, 16);

this.radioButton4.TabIndex = 3;

this.radioButton4.Text = "Png格式";

//

// radioButton3

//

this.radioButton3.Location = new System.Drawing.Point(8, 72);

this.radioButton3.Name = "radioButton3";

this.radioButton3.Size = new System.Drawing.Size(72, 16);

this.radioButton3.TabIndex = 2;

this.radioButton3.Text = "Jpeg格式";

//

// radioButton2

//

this.radioButton2.Checked = true;

this.radioButton2.Location = new System.Drawing.Point(8, 48);

this.radioButton2.Name = "radioButton2";

this.radioButton2.Size = new System.Drawing.Size(72, 16);

this.radioButton2.TabIndex = 1;

this.radioButton2.TabStop = true;

this.radioButton2.Text = "Gif格式";

//

// radioButton1

//

this.radioButton1.Location = new System.Drawing.Point(8, 24);

this.radioButton1.Name = "radioButton1";

this.radioButton1.Size = new System.Drawing.Size(72, 16);

this.radioButton1.TabIndex = 0;

this.radioButton1.Text = "Bmp格式";

//

// Form1

//

this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);

this.ClientSize = new System.Drawing.Size(400, 238);

this.Controls.Add(this.groupBox1);

this.Controls.Add(this.button2);

this.Controls.Add(this.button1);

this.Controls.Add(this.pictureBox1);

this.MaximizeBox = false;

this.Name = "Form1";

this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;

this.Text = "演示图像文件格式转换";

this.groupBox1.ResumeLayout(false);

this.ResumeLayout(false);

}

#endregion

///

/// 应用程序的主入口点。

///

[STAThread]

static void Main()

{

Application.Run(new Form1());

}

private void button1_Click(object sender, System.EventArgs e)

{//打开图像文件并显示

this.openFileDialog1.ShowDialog();

if(this.openFileDialog1.FileName.Trim()=="")

return;

try

{

this.pictureBox1.Image=System.Drawing.Bitmap.FromFile(this.openFileDialog1.FileName);

}

catch(Exception Err)

{

MessageBox.Show(this,"打开图像文件错误！","信息提示",MessageBoxButtons.OK,MessageBoxIcon.Information);

}

}

private void button2_Click(object sender, System.EventArgs e)

{//转换图像文件格式

this.saveFileDialog1.ShowDialog();

System.String StrFileName=this.saveFileDialog1.FileName;

if(StrFileName.Trim()=="")

return;

try

{

if(this.radioButton1.Checked)

{

this.pictureBox1.Image.Save(StrFileName ".bmp",System.Drawing.Imaging.ImageFormat.Bmp);

}

if(this.radioButton2.Checked)

{

this.pictureBox1.Image.Save(StrFileName ".gif",System.Drawing.Imaging.ImageFormat.Gif);

}

if(this.radioButton3.Checked)

{

this.pictureBox1.Image.Save(StrFileName ".jpg",System.Drawing.Imaging.ImageFormat.Jpeg);

}

if(this.radioButton4.Checked)

{

this.pictureBox1.Image.Save(StrFileName ".png",System.Drawing.Imaging.ImageFormat.Png);

}

if(this.radioButton5.Checked)

{

this.pictureBox1.Image.Save(StrFileName ".tif",System.Drawing.Imaging.ImageFormat.Tiff);

}

if(this.radioButton6.Checked)

{

this.pictureBox1.Image.Save(StrFileName ".wmf",System.Drawing.Imaging.ImageFormat.Wmf);

}

}

catch(Exception Error)

{

MessageBox.Show(this,"保存图像文件时发生错误！","信息提示",MessageBoxButtons.OK,MessageBoxIcon.Information);

}

}

}

}