Step 1: Click New Project, then select Visual C# on the left, then Windows and then select Windows Forms Application. Name your project "ReadImageFile" and then click OK
Step 2: Design your form as below

Step 3: Add code to button click event handler as below
private void btnOpen_Click(object sender, EventArgs e)
{
try
{
//Open file dialog, allows you to select an image file
using (OpenFileDialog ofd = new OpenFileDialog() { Filter = "JPG|*.jpg|PNG|*.png|Bitmap|*.bmp", ValidateNames = true, Multiselect = false })
{
if (ofd.ShowDialog() == DialogResult.OK)
pictureBox.Image = Image.FromFile(ofd.FileName);
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, "Message", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
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