如何知道图像的文件大小（C＃openDialog，窗体）

Question

如何知道图像的文件大小（C＃openDialog，窗体）

Answer 1

可以使用FileInfo.Length检查文件大小。

OpenFileDialog openFileDialog1 = new OpenFileDialog();

openFileDialog1.InitialDirectory = "c:\\" ;
openFileDialog1.Filter = "txt files (*.txt)|*.txt|All files (*.*)|*.*" ;
openFileDialog1.FilterIndex = 2 ;
openFileDialog1.RestoreDirectory = true ;

if (DialogResult.OK == openFileDialog1.ShowDialog()) 
{
    string file = openFileDialog1.FileName;

    FileInfo fi = new FileInfo(file);
    int fileSize = fi.Length;
}