Question

我需要使用打开的文件对话框打开窗口中的位图图像（我将从驱动器加载它）。图像应该放在图片框中。这里有一些代码我试过但是出错了！

 private void button1_Click(object sender, EventArgs e)
        {
            OpenFileDialog dlg = new OpenFileDialog();

            dlg.Title = "Open Image";
            dlg.Filter = "bmp files (*.bmp)|*.bmp";

            if (dlg.ShowDialog() == DialogResult.OK)
            {                     
            PictureBox PictureBox1 = new PictureBox();                    
                PictureBox1.Image(dlg.FileName);
            }

            dlg.Dispose();
        }

Answer 1

您必须使用Bitmap class创建constructor overload的实例，该using statement从磁盘上的文件加载图像。在您的代码编写完成后，您尝试使用PictureBox.Image 属性，就好像它是方法一样。

将您的代码更改为这样（同时利用Controls collection确保正确处理，而不是手动调用Dispose方法）：

private void button1_Click(object sender, EventArgs e)
{
    // Wrap the creation of the OpenFileDialog instance in a using statement,
    // rather than manually calling the Dispose method to ensure proper disposal
    using (OpenFileDialog dlg = new OpenFileDialog())
    {
        dlg.Title = "Open Image";
        dlg.Filter = "bmp files (*.bmp)|*.bmp";

        if (dlg.ShowDialog() == DialogResult.OK)
        {
            PictureBox PictureBox1 = new PictureBox();

            // Create a new Bitmap object from the picture file on disk,
            // and assign that to the PictureBox.Image property
            PictureBox1.Image = new Bitmap(dlg.FileName);
        }
    }
}

当然，这不会在表单上的任何位置显示图像，因为您创建的图片框控件尚未添加到表单中。您需要使用Add method将刚刚创建的新图片框控件添加到表单{{3}}。请注意这里添加到上面代码的行：

private void button1_Click(object sender, EventArgs e)
{
    using (OpenFileDialog dlg = new OpenFileDialog())
    {
        dlg.Title = "Open Image";
        dlg.Filter = "bmp files (*.bmp)|*.bmp";

        if (dlg.ShowDialog() == DialogResult.OK)
        {
            PictureBox PictureBox1 = new PictureBox();
            PictureBox1.Image = new Bitmap(dlg.FileName);

            // Add the new control to its parent's controls collection
            this.Controls.Add(PictureBox1);
        }
    }
}

Answer 2

工作正常。试试这个，

private void addImageButton_Click(object sender, EventArgs e)
{
    OpenFileDialog of = new OpenFileDialog();
    //For any other formats
    of.Filter = "Image Files (*.bmp;*.jpg;*.jpeg,*.png)|*.BMP;*.JPG;*.JPEG;*.PNG"; 
    if (of.ShowDialog() == DialogResult.OK)
    {
        pictureBox1.ImageLocation = of.FileName;

    }
}

Answer 3

你应该尝试：

以形式直观地创建图片框（更容易）
将图片框的Dock属性设置为Fill（如果您希望图片填写表单）
将图片框的SizeMode设置为StretchImage

最后：

private void button1_Click(object sender, EventArgs e)
{
    OpenFileDialog dlg = new OpenFileDialog();
    dlg.Title = "Open Image";
    dlg.Filter = "bmp files (*.bmp)|*.bmp";
    if (dlg.ShowDialog() == DialogResult.OK)
    {                     
        PictureBox1.Image = Image.FromFile(dlg.Filename);
    }
    dlg.Dispose();
}

Answer 4

private void button1_Click(object sender, EventArgs e)
{
    OpenFileDialog open = new OpenFileDialog();
    if (open.ShowDialog() == DialogResult.OK)
        pictureBox1.Image = Bitmap.FromFile(open.FileName);
}

Answer 5

您也可以尝试PictureBox1.Image = Image.FromFile("<your ImagePath>" or <Dialog box result>);

Answer 6

PictureBox.Image是一个属性，而不是一个方法。您可以这样设置：

PictureBox1.Image = System.Drawing.Image.FromFile(dlg.FileName);

Answer 7

您可以尝试以下操作：

private void button1_Click(object sender, EventArgs e)
    {
        OpenFileDialog fDialog = new OpenFileDialog();
        fDialog.Title = "Select file to be upload";
        fDialog.Filter = "All Files|*.*";
        //  fDialog.Filter = "PDF Files|*.pdf";
        if (fDialog.ShowDialog() == DialogResult.OK)
        {
            textBox1.Text = fDialog.FileName.ToString();
        }
    }

Answer 8

这很简单。只需添加：

PictureBox1.BackgroundImageLayout = ImageLayout.Zoom;

使用打开文件对话框将位图图像加载到窗体中！

8 个答案: