restrict file / image size in c#



private bool ValidFile(string filename, long limitInBytes, int limitWidth, int limitHeight)
{
var fileSizeInBytes = new FileInfo(filename).Length;
if(fileSizeInBytes > limitInBytes) return false;

using(var img = new Bitmap(filename))
{
if(img.Width > limitWidth || img.Height > limitHeight) return false;
}

return true;
}

private void selectImgButton_Click(object sender, EventArgs e)
{
if (openFileDialog1.ShowDialog() == DialogResult.OK)
{
if(ValidFile(openFileDialog1.FileName, 102400, 350, 350))
{
// Image is valid and U can
// Do something with image
// For example set it to a picture box
pictureBox1.Image = new Bitmap(openFileDialog1.FileName);
}
else
{
MessageBox.Show("Image is invalid");
}
}
}

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