Как вставить картинку в windows form

Последнее обновление: 31.10.2015

PictureBox предназначен для показа изображений. Он позволяет отобразить файлы в формате bmp, jpg, gif, а также метафайлы ищображений
и иконки. Для установки изображения в PictureBox можно использовать ряд свойств:

Image: устанавливает объект типа Image
ImageLocation: устанавливает путь к изображению на диске или в интернете
InitialImage: некоторое начальное изображение, которое будет отображаться во время загрузки главного изображения,
которое хранится в свойстве Image
ErrorImage: изображение, которое отображается, если основное изображение не удалось загрузить в PictureBox

Чтобы установить изображение в Visual Studio, надо в панели Свойств PictureBox выбрать свойство Image. В этом случае нам откроется окно импорта изображения
в проект, где мы собственно и сможем выбрать нужное изображение на компьютере и установить его для PictureBox:

И затем мы сможем увидеть данное изображение в PictureBox:

Либо можно загрузить изображение в коде:

pictureBox1.Image = Image.FromFile("C:UsersEugenePictures12.jpg");

Размер изображения

Для установки изображения в PictureBox используется свойство SizeMode, которое принимает следующие значения:

Normal: изображение позиционируется в левом верхнем углу PictureBox, и размер изображения не изменяется. Если
PictureBox больше размеров изображения, то по справа и снизу появляются пустоты, если меньше — то изображение обрезается
StretchImage: изображение растягивается или сжимается таким обраом, чобы вместиться по всей ширине и высоте элемента PictureBox
AutoSize: элемент PictureBox автоматически растягивается, подстраиваясь под размеры изображения
CenterImage: если PictureBox меньше изображения, то изображение обрезается по краям и выводится только его центральная часть.
Если же PictureBox больше изображения, то оно позиционируется по центру.
Zoom: изоражение подстраивается под размеры PictureBox, сохраняя при этом пропорции

Источник

I wanted to display an image to the windows forms, but i already did this and the image did not come out.

Where did I go wrong?

Here is the code:

private void Images(object sender, EventArgs e)
{
    PictureBox pb1 = new PictureBox();
    pb1.Image = Image.FromFile("../SamuderaJayaMotor.png");
    pb1.Location = new Point(100, 100);
    pb1.Size = new Size(500, 500);
    this.Controls.Add(pb1);
}

Lee Taylor

7,65916 gold badges33 silver badges49 bronze badges

asked Oct 5, 2013 at 3:50

Here (http://www.dotnetperls.com/picturebox) there 3 ways to do this:

Like you are doing.

Using ImageLocation property of the PictureBox like:

private void Form1_Load(object sender, EventArgs e)
{
    PictureBox pb1 = new PictureBox();            
    pb1.ImageLocation = "../SamuderaJayaMotor.png";
    pb1.SizeMode = PictureBoxSizeMode.AutoSize;
}

Using an image from the web like:

private void Form1_Load(object sender, EventArgs e)
{
    PictureBox pb1 = new PictureBox();            
    pb1.ImageLocation = "http://www.dotnetperls.com/favicon.ico";
    pb1.SizeMode = PictureBoxSizeMode.AutoSize;
}

And please, be sure that «../SamuderaJayaMotor.png» is the correct path of the image that you are using.

There could be many reasons for this. A few that come up quickly to my mind:

Did you call this routine AFTER InitializeComponent()?
Is the path syntax you are using correct? Does it work if you try it in the debugger? Try using backslash () instead of Slash (/) and see.
This may be due to side-effects of some other code in your form. Try using the same code in a blank Form (with just the constructor and this function) and check.

answered Oct 5, 2013 at 3:54

dotNETdotNET

32.2k22 gold badges151 silver badges242 bronze badges

I display images in windows forms when I put it in Load event like this:

    private void Form1_Load( object sender , EventArgs e )
    {
        pictureBox1.ImageLocation = "./image.png"; //path to image
        pictureBox1.SizeMode = PictureBoxSizeMode.AutoSize;
    }

answered Jun 15, 2017 at 19:59

IliyanIliyan

511 silver badge4 bronze badges

private void Form1_Load(object sender, EventArgs e)
    {
        PictureBox pb = new PictureBox();
        pb.Location = new Point(0, 0);
        pb.Size = new Size(150, 150);
        pb.Image = Image.FromFile("E:\Wallpaper (204).jpg");
        pb.Visible = true;
        this.Controls.Add(pb);
    }

answered Jun 9, 2020 at 13:27

Источник

У многие новичков возникают вопросы при написании программа на C#. Один из часто задаваемых, как использовать компонент pictureBox и как использовать этот класс. Если вы пользуетесь конструктором в visual studio это одно, да вам легко перетащить из панели элементов pictureBox и в свойствах Image вставить изображение. Но что делать если вам требуется изменить картинку программно, или вовсе при нажатии кнопки менять изображения. Вот об этом и поговорим в этой статье. Прежде всего вам потребуется сама картинка, я создал новое приложение назвал его pictureBox скачал из интернета 4 картинки, на форме разместил компонент pictureBox 150х150 и button. рис 1.

рис 1.

Теперь нам потребуется добавить наши картинки в проект, для это выбираем свойство нашего проекта рис 2.

рис 2.

Переходим во вкладку ресурсы, вверху окна выберем рядом со стрелочкой добавить ресурс, и жмем добавить существующий фаил, указываем наш фаил и он загружается в проект, по аналогии добавляем остальные картинки. рис. 3.

рис. 3

Молодцы теперь мы умеем добавлять ресурсы в наш проект, сюда так же можно добавлять и другого формата файлы, видео, музыку, текстовые файлы. Если вы были внимательны, то в обозревателе решений в папке Resources появились наши картинки. рис 3.

рис. 3

Теперь перейдем не посредственно коду программы, а именно одним из его свойств.

Свойство Image компонента PictureBox:

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 pictureBox

{

public partial class Form1 : Form

{

public Form1()

{

InitializeComponent();

}

private void button1_Click(object sender, EventArgs e)

{

pictureBox1.Image = Properties.Resources.img1;

}

В коде программы мы видим что при нажатии на кнопку, мы переходим в обработчик событий button1_Click где вставляем в компонент pictureBox1 картинку, причем мы указываем полный путь к картинке, это папка свойства, ресурсы, img1. Теперь запустите наш пример и убедитесь что при нажатии на клавише у вас появилась картинка. Усложним нашу программы что бы изображения менялось на другие картинки при нажатии на кнопку, все строки я за комментировал что бы вам было легче разобраться.

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 pictureBox

{

public partial class Form1 : Form

{

public Form1()

{

InitializeComponent();

}

int count = 0;

private void button1_Click(object sender, EventArgs e)

{

count++; //тут я увеличиваю значения счетчика на 1

if (count == 1)

{

//если счетчик равен 1 то медведь

pictureBox1.Image = Properties.Resources.img1;

}

if (count == 2)

{

//если счетчик равен 2 то конь

pictureBox1.Image = Properties.Resources.img2;

}

if (count == 3)

{

//если счетчик равен 3 то щенок и котенок

pictureBox1.Image = Properties.Resources.img3;

}

if (count == 4)

{

//если счетчик равен 4 то тигренок

count = 0; //сбрасываем счетчки что бы начать все заново

pictureBox1.Image = Properties.Resources.img4;

}

Вот что должно было у вас получиться:

PictureBox кроме свойства Image которое с вами рассмотрели, имеет ряд свойств.

Свойство Size Определяет Width ширину компонента, и Height высоту компонента, спомощью него можно задать размер и получить текущий размер PictureBox.

pictureBox1.Size = new System.Drawing.Size(150, 150); //задаем размеры

int h =pictureBox1.Size.Height; //получаем текущую высоту

int w = pictureBox1.Size.Width;//получаем текущую ширину

Свойство Location позволяет задать положения компонента на поверхности форму, с помощью приведенного ниже примера вы сможете разместить в любом месте на форме PictureBox.

pictureBox1.Location = new System.Drawing.Point(66, 42);

Источник

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Question
hi guys,

how do i add an image or icon to my winform form ?

e.g. see this

thanks

Ehi

Answers

not really, e.g. in a webform you add the image control and then specify the path for the image.

Likewise in the webform, I dont see any image control in the toolbox to add ???

Its simply just to make it fancy, nothing more.

Hi Ehioze,

Welcome to the MSDN Forum.

Maybe you want to draw the picture without any control, but show it as a background and you don’t want to set the background-Image, than you can do like the following sample:

public partial class Form1 : Form
{
    public Form1()
    {
        InitializeComponent();

        SetStyle(ControlStyles.ResizeRedraw, true);

        InitilizePicture();
    }

    Bitmap b = new Bitmap(1600, 900);
    Rectangle rect;
    Rectangle sourceRect;
    Image picture;
    Graphics g;

    private void InitilizePicture()
    {
        picture = Image.FromFile(Path.Combine(Environment.CurrentDirectory,"BG.jpg"));
        b.SetResolution(picture.HorizontalResolution, picture.VerticalResolution);
        g = Graphics.FromImage(b);

        rect = new Rectangle(0, 0,1600, 900);
      //  sourceRect = new Rectangle(new Point(0, 0), new Size(picture.Width, picture.Height));
        sourceRect = new Rectangle(0, 0, picture.Width, picture.Height);

        g.DrawImage(picture, rect, sourceRect, GraphicsUnit.Pixel);
    }

    private void Form1_MouseClick(object sender, MouseEventArgs e)
    {
        Close();
    }

    protected override void OnPaint(PaintEventArgs e)
    {
        e.Graphics.DrawImage(b, rect, sourceRect, GraphicsUnit.Pixel);
        base.OnPaint(e);
        
    }
}

And you can add a property with set method so that you can change the image.

On the other hand, you can also add the BackgroundImage by using the Visual Studio.

Best Regards

Neddy Ren[MSFT]
MSDN Community Support | Feedback to us

Marked as answer by

Thursday, November 24, 2011 9:16 AM

Источник

See how you can draw shapes, use colors, and render images in a WinForms app.

Windows Forms is a framework that lets you build desktop applications. You can click and drag components like buttons onto a visual user interface. It also helps you manually create various shapes within your code.

This article will show you how to add lines, shapes, and images to your application. This tutorial uses the Visual Studio 2019 Community Edition to show examples.

What Are the Built-In Classes Used for Drawing Graphics?

Windows Forms uses the C# programming language. Its built-in classes and methods allow you to draw various shapes onto a Windows Form canvas. These include the Graphics, Pen, Color, and Brush classes.

Class	Description
Graphics	The Graphics class allows you to draw shapes and lines onto the canvas. It includes methods such as: DrawLine(Pen, Point1, Point2) DrawRectangle(x, y, width, height) DrawPolygon(Pen, PointF[])
Pen	The Pen class allows you to specify the properties of a ‘pen’ tip which you can use to draw your shapes. You can specify properties such as color, thickness, or dash style. Methods include: SetLineCap(LineCap, LineCap, DashCap)
Color	A color object made up of R (red), G (green), and B (blue) values. You will need a color object for many of the built-in methods that create shapes.
SolidBrush, HatchBrush, TextureBrush	These brush classes derive from the «Brush» interface. These classes allow you to color in blank spaces on the canvas. You can also choose to fill the spaces using different patterns or textures. You can specify properties such as the color.
Rectangle, Line, Polygon, Ellipse	You can create objects based on these shapes, and use them when calling methods such as DrawRectangle(). Instead of passing the x, y, width, and height as arguments, you can choose to pass an existing Rectangle object instead.

To view the source code for a running example of the above tutorial, visit the GitHub repository. You can try out the following examples once you’ve created a Winforms application.

How to Add a Paint on Form Load Event Handler

First, add an event handler to draw shapes when the canvas loads.

Add a Paint function for the form.

 private void Form1_Paint(object sender, PaintEventArgs e)
{
    // Code goes here
}

Go into the Design View Tab.
In the Properties window, select the lightning icon to open the «Events» tab.
In «Paint», under «Appearance», select the Form1_Paint function. This will execute the function when you run the application.

How to Draw Lines Onto a Windows Form Canvas

You can use a Color, Pen, and the DrawLine() method to draw lines on a canvas.

Inside the Form1_Paint() function, create a Color object with the color you want the line to be. Then, create a Pen object to draw the line with.
```
 Color black = Color.FromArgb(255, 0, 0, 0);
Pen blackPen = new Pen(black);
 
```
The DrawLine() method from the Graphics class will draw a line using the pen. This will start drawing a line from an x, y position to another x, y position.
```
 e.Graphics.DrawLine(blackPen, 300, 200, 800, 200);
 
```

You can modify the properties for the pen object to change its width, dash style, and start or end cap.

 blackPen.Width = 20;
blackPen.DashStyle = System.Drawing.Drawing2D.DashStyle.Dash;
blackPen.StartCap = System.Drawing.Drawing2D.LineCap.ArrowAnchor;
e.Graphics.DrawLine(blackPen, 300, 200, 800, 200);

Press the green play button at the top of Visual Studio to see the changes.

How to Draw Shapes Such as Rectangles and Circles

You can use the shapes classes for different shapes, or draw shapes manually onto the canvas.

Create a Color and Pen object as shown in the previous steps. Then, use the DrawRectangle() method to create the rectangle. The arguments are the x and y coordinates for the top-left of the rectangle, along with its width and height.
```
 Color red = Color.FromArgb(255, 255, 0, 0);
Pen redPen = new Pen(red);
redPen.Width = 5;
e.Graphics.DrawRectangle(redPen, 100, 100, 500, 200);
 
```
You can also create a rectangle using the Rectangle Class. First, create a Rectangle object. The arguments are also the x and y coordinates for the top-left corner, width, and height.
```
 Rectangle rectangle = new Rectangle(100, 350, 500, 200);
 
```
Use the DrawRectangle() function to draw the rectangle. Instead of passing the x, y, width, and height like before, you can use the Rectangle object instead.
```
 e.Graphics.DrawRectangle(redPen, rectangle);
 
```
Press the green play button at the top of Visual Studio to see the changes.
Go back to the code to draw other shapes. Use the DrawEllipse() function to draw a circle.
```
 Color green = Color.FromArgb(255, 0, 255, 0);
Pen greenPen = new Pen(green);
greenPen.Width = 5;
e.Graphics.DrawEllipse(greenPen, 400, 150, 400, 400); 
```
When you draw a circle, the x and y coordinates (x=400, y=150) refer to the top-left corner of the circle, not the center of the circle.
To draw other shapes such as triangles or hexagons, use the DrawPolygon() method. Here you can specify a list of coordinates to represent the points of the shape.
```
 Color blue = Color.FromArgb(255, 0, 0, 255);
Pen bluePen = new Pen(blue);
bluePen.Width = 5;PointF[] coordinatesForTriangle = new PointF[] {
    new PointF(400, 150),
    new PointF(300, 300),
    new PointF(500, 300)
};
e.Graphics.DrawPolygon(bluePen, coordinatesForTriangle); 
```
The DrawPolygon() method will draw lines between the points specified.

How to Use the Brush Class to Fill In Shapes With Color

You can use the FillRectangle(), FillEllipses() or FillTriangle() methods to create shapes with a solid color.

First, create a brush object.

 Color purple = Color.FromArgb(255, 128, 0, 0);
SolidBrush solidBrush = new SolidBrush(purple);

Use the FillRectangle(), FillEllipses() or FillTriangle() methods. They work the same way as the draw functions above, except instead of a Pen, they use a Brush object.
```
 e.Graphics.FillRectangle(solidBrush, 50, 50, 200, 250);
e.Graphics.FillEllipse(solidBrush, 300, 50, 200, 200);
e.Graphics.FillPolygon(solidBrush, new PointF[] { new PointF(700, 150), new PointF(600, 300), new PointF(800, 300) }); 
```

You can also input a shape object directly instead of providing coordinates.

 Rectangle rectangle = new Rectangle(100, 350, 500, 200);
e.Graphics.FillRectangle(solidBrush, rectangle);

Use the HatchBrush to fill the shape using a different fill style, such as a horizontal or vertical pattern.
```
 Color blue = Color.FromArgb(255, 0, 0, 255);
Color green = Color.FromArgb(255, 0, 255, 0);
HatchBrush hatchBrush = new HatchBrush(HatchStyle.Horizontal, green, blue);
e.Graphics.FillRectangle(hatchBrush, 50, 50, 200, 250); 
```
You can use the TextureBrush to fill a shape using an image. Here, create a bitmap by pointing to an image file. Instead of creating a brush using a color, create it using the image.
```
 Bitmap image = (Bitmap)Image.FromFile(@"C:UsersSharlDesktopflag.bmp", true);
TextureBrush textureBrush = new TextureBrush(image);
e.Graphics.FillRectangle(textureBrush, 100, 100, 500, 400); 
```

How to Render Images Onto the Form

To render an image, create a PictureBox control object and add it to the form.

Create a PictureBox control object using an image file.

 PictureBox picture = new PictureBox();
picture.ImageLocation = @"C:UsersSharlDesktopflagLarge.bmp";

Set the size of the image and add it onto the form so it renders.

 picture.SizeMode = PictureBoxSizeMode.AutoSize;
this.Controls.Add(picture);

Press the green start button at the top to view the image.

Adding More Shapes to Your Windows Form

You should now understand how to add lines, shapes, and images to your Windows form. You can combine shapes to create new shapes. You can also play around with the built-in functions to create more complex shapes.

Источник

See how you can draw shapes, use colors, and render images in a WinForms app.

This article will show you how to add lines, shapes, and images to your application. This tutorial uses the Visual Studio 2019 Community Edition to show examples.

What Are the Built-In Classes Used for Drawing Graphics?

Class	Description
Graphics	The Graphics class allows you to draw shapes and lines onto the canvas. It includes methods such as: DrawLine(Pen, Point1, Point2) DrawRectangle(x, y, width, height) DrawPolygon(Pen, PointF[])
Pen	The Pen class allows you to specify the properties of a ‘pen’ tip which you can use to draw your shapes. You can specify properties such as color, thickness, or dash style. Methods include: SetLineCap(LineCap, LineCap, DashCap)
Color	A color object made up of R (red), G (green), and B (blue) values. You will need a color object for many of the built-in methods that create shapes.
SolidBrush, HatchBrush, TextureBrush	These brush classes derive from the «Brush» interface. These classes allow you to color in blank spaces on the canvas. You can also choose to fill the spaces using different patterns or textures. You can specify properties such as the color.
Rectangle, Line, Polygon, Ellipse	You can create objects based on these shapes, and use them when calling methods such as DrawRectangle(). Instead of passing the x, y, width, and height as arguments, you can choose to pass an existing Rectangle object instead.

To view the source code for a running example of the above tutorial, visit the GitHub repository. You can try out the following examples once you’ve created a Winforms application.

How to Add a Paint on Form Load Event Handler

First, add an event handler to draw shapes when the canvas loads.

Add a Paint function for the form.

 private void Form1_Paint(object sender, PaintEventArgs e)
{
    // Code goes here
}

Go into the Design View Tab.
In the Properties window, select the lightning icon to open the «Events» tab.
In «Paint», under «Appearance», select the Form1_Paint function. This will execute the function when you run the application.

How to Draw Lines Onto a Windows Form Canvas

You can use a Color, Pen, and the DrawLine() method to draw lines on a canvas.

Inside the Form1_Paint() function, create a Color object with the color you want the line to be. Then, create a Pen object to draw the line with.
```
 Color black = Color.FromArgb(255, 0, 0, 0);
Pen blackPen = new Pen(black);
 
```
The DrawLine() method from the Graphics class will draw a line using the pen. This will start drawing a line from an x, y position to another x, y position.
```
 e.Graphics.DrawLine(blackPen, 300, 200, 800, 200);
 
```

You can modify the properties for the pen object to change its width, dash style, and start or end cap.

 blackPen.Width = 20;
blackPen.DashStyle = System.Drawing.Drawing2D.DashStyle.Dash;
blackPen.StartCap = System.Drawing.Drawing2D.LineCap.ArrowAnchor;
e.Graphics.DrawLine(blackPen, 300, 200, 800, 200);

Press the green play button at the top of Visual Studio to see the changes.

How to Draw Shapes Such as Rectangles and Circles

You can use the shapes classes for different shapes, or draw shapes manually onto the canvas.

Create a Color and Pen object as shown in the previous steps. Then, use the DrawRectangle() method to create the rectangle. The arguments are the x and y coordinates for the top-left of the rectangle, along with its width and height.
```
 Color red = Color.FromArgb(255, 255, 0, 0);
Pen redPen = new Pen(red);
redPen.Width = 5;
e.Graphics.DrawRectangle(redPen, 100, 100, 500, 200);
 
```
You can also create a rectangle using the Rectangle Class. First, create a Rectangle object. The arguments are also the x and y coordinates for the top-left corner, width, and height.
```
 Rectangle rectangle = new Rectangle(100, 350, 500, 200);
 
```
Use the DrawRectangle() function to draw the rectangle. Instead of passing the x, y, width, and height like before, you can use the Rectangle object instead.
```
 e.Graphics.DrawRectangle(redPen, rectangle);
 
```
Press the green play button at the top of Visual Studio to see the changes.
Go back to the code to draw other shapes. Use the DrawEllipse() function to draw a circle.
```
 Color green = Color.FromArgb(255, 0, 255, 0);
Pen greenPen = new Pen(green);
greenPen.Width = 5;
e.Graphics.DrawEllipse(greenPen, 400, 150, 400, 400); 
```
When you draw a circle, the x and y coordinates (x=400, y=150) refer to the top-left corner of the circle, not the center of the circle.
To draw other shapes such as triangles or hexagons, use the DrawPolygon() method. Here you can specify a list of coordinates to represent the points of the shape.
```
 Color blue = Color.FromArgb(255, 0, 0, 255);
Pen bluePen = new Pen(blue);
bluePen.Width = 5;PointF[] coordinatesForTriangle = new PointF[] {
    new PointF(400, 150),
    new PointF(300, 300),
    new PointF(500, 300)
};
e.Graphics.DrawPolygon(bluePen, coordinatesForTriangle); 
```
The DrawPolygon() method will draw lines between the points specified.

How to Use the Brush Class to Fill In Shapes With Color

You can use the FillRectangle(), FillEllipses() or FillTriangle() methods to create shapes with a solid color.

First, create a brush object.

 Color purple = Color.FromArgb(255, 128, 0, 0);
SolidBrush solidBrush = new SolidBrush(purple);

Use the FillRectangle(), FillEllipses() or FillTriangle() methods. They work the same way as the draw functions above, except instead of a Pen, they use a Brush object.
```
 e.Graphics.FillRectangle(solidBrush, 50, 50, 200, 250);
e.Graphics.FillEllipse(solidBrush, 300, 50, 200, 200);
e.Graphics.FillPolygon(solidBrush, new PointF[] { new PointF(700, 150), new PointF(600, 300), new PointF(800, 300) }); 
```

You can also input a shape object directly instead of providing coordinates.

 Rectangle rectangle = new Rectangle(100, 350, 500, 200);
e.Graphics.FillRectangle(solidBrush, rectangle);

Use the HatchBrush to fill the shape using a different fill style, such as a horizontal or vertical pattern.
```
 Color blue = Color.FromArgb(255, 0, 0, 255);
Color green = Color.FromArgb(255, 0, 255, 0);
HatchBrush hatchBrush = new HatchBrush(HatchStyle.Horizontal, green, blue);
e.Graphics.FillRectangle(hatchBrush, 50, 50, 200, 250); 
```
You can use the TextureBrush to fill a shape using an image. Here, create a bitmap by pointing to an image file. Instead of creating a brush using a color, create it using the image.
```
 Bitmap image = (Bitmap)Image.FromFile(@"C:UsersSharlDesktopflag.bmp", true);
TextureBrush textureBrush = new TextureBrush(image);
e.Graphics.FillRectangle(textureBrush, 100, 100, 500, 400); 
```

How to Render Images Onto the Form

To render an image, create a PictureBox control object and add it to the form.

Create a PictureBox control object using an image file.

 PictureBox picture = new PictureBox();
picture.ImageLocation = @"C:UsersSharlDesktopflagLarge.bmp";

Set the size of the image and add it onto the form so it renders.

 picture.SizeMode = PictureBoxSizeMode.AutoSize;
this.Controls.Add(picture);

Press the green start button at the top to view the image.

Adding More Shapes to Your Windows Form

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Use the PictureBox control from Windows Forms to render images.

PictureBox provides a rectangular region for an image. It supports many image formats. It has an adjustable size. It can access image files from your disk or from the Internet. It can resize images in several different ways.

Steps. First, the PictureBox provides a way to display an image. It can handle many different image formats. We use the PNG format. To add a PictureBox to your Windows Forms program, go to the Designer view and open the Toolbox.

Then: Drag the PictureBox icon to your window in the desired location. This creates a rectangular PictureBox instance.

In the next step of this tutorial, we assign an image to the PictureBox from the disk. There are several ways of doing this, but the way we use here allows you to quickly resize the PictureBox control so the entire image is shown.

Here: We use a PNG image in this code. But JPEG images and GIF images are also supported.

Event: We use the Form_Load event. To create this event handler, double-click on the enclosing window in the Designer view.

Windows Forms code that initialized PictureBox control: C#

using System;
using System.Drawing;
using System.Windows.Forms;

namespace WindowsFormsApplication24
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}

private void Form1_Load(object sender, EventArgs e)
{
// Construct an image object from a file in the local directory.
// … This file must exist in the solution.
Image image = Image.FromFile(«BeigeMonitor1.png»);
// Set the PictureBox image property to this image.
// … Then, adjust its height and width properties.
pictureBox1.Image = image;
pictureBox1.Height = image.Height;
pictureBox1.Width = image.Width;
}
}
}

The Image type is a class that encapsulates information about an image, including its data in bytes. It provides an abstract data type for handling an image in a clear way. It is found in the System.Drawing namespace.Image

Why assign the Height and Width? This code uses two statements to assign the Height and Width instance properties of the Image. This forces the PictureBox to resize correctly. If you omit these statements, the image may be cropped.

Also: It is easy to crop a PictureBox by setting its Width and Height to the desired values.

Discussion. At its core, the PictureBox is a mechanism for displaying an image graphically in the Windows Forms program. It cannot do elaborate transformations on this image. You must invoke any of these transformations through your own logic.

Tip: You can add hover (mouse-over) and click events to the PictureBox in the same way as other Windows Forms controls.

But: For complex programs that display images in a specific way, the PictureBox is not ideal.

PictureBoxSizeMode. Here we cover the transformations that are enabled through the SizeMode property on the PictureBox control. All of these settings affect how an image is displayed based on the dimensions of the control (width and height).

Instead of setting Width and Height, we can use the PictureBoxSizeMode.AutoSize enum. We can center the image both horizontally and vertically. We can stretch the image so that it fills the entire enclosing box.

And: We can zoom the image so that it maintains its original aspect ratio. The image does not appear distorted.

Enum values:

AutoSize
CenterImage
Normal
StretchImage
Zoom

ImageLocation. The PictureBox contains an instance property called ImageLocation, and this sets the image data from a file. If you use the AutoSize enum with the ImageLocation property, your PictureBox will be sized correctly.

Implementation of Form_Load: C#

private void Form1_Load(object sender, EventArgs e)
{
// Set the ImageLocation property to a file on the disk.
// … Set the size mode so that the image is correctly sized.
pictureBox1.ImageLocation = «BeigeMonitor1.png»;
pictureBox1.SizeMode = PictureBoxSizeMode.AutoSize;
}

Download. For the PictureBox control, you can use the ImageLocation instance property to specify the URL of an image to download and place in the PictureBox. For this example, we will use the website icon file for this site.

Also: This example shows that the PictureBox supports the ICO format for images.

Another implementation of Form_Load: C#

private void Form1_Load(object sender, EventArgs e)
{
// Set the ImageLocation property to a URL.
// … This example image is tiny and is the icon for The Dev Codes.
pictureBox1.ImageLocation = «http://www.dotnetCodex.com/favicon.ico»;
}

Summary. The PictureBox displays images of various types. It handles the drawing of the pixels, and provides properties for adjusting the dimensions of the control. You can zoom images, stretch images, or crop image displays.

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Question

Answers

What Are the Built-In Classes Used for Drawing Graphics?

How to Add a Paint on Form Load Event Handler

How to Draw Lines Onto a Windows Form Canvas

How to Draw Shapes Such as Rectangles and Circles

How to Use the Brush Class to Fill In Shapes With Color

How to Render Images Onto the Form

Adding More Shapes to Your Windows Form

What Are the Built-In Classes Used for Drawing Graphics?

How to Add a Paint on Form Load Event Handler

How to Draw Lines Onto a Windows Form Canvas

How to Draw Shapes Such as Rectangles and Circles

How to Use the Brush Class to Fill In Shapes With Color

How to Render Images Onto the Form

Adding More Shapes to Your Windows Form

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