private void buttonLoad_Click(object sender, EventArgs e)
{
openFileDialog.InitialDirectory = Directory.GetCurrentDirectory();
if (openFileDialog.ShowDialog() == DialogResult.OK)
{
var FileName = new StringBuilder(openFileDialog.FileName);
int n = GetFileSize(FileName);
var FileData = new StringBuilder(n);
GetFile(FileName, FileData);
textBox.Text = FileData.ToString();
var s = new SharpStruct();
s.i = 100;
s.d = 200;
s.s = "String from Sharp";
GetStruct(ref s);
listBox.Items.Add($"{s.i}");
listBox.Items.Add($"{s.d}");
listBox.Items.Add($"{s.s}");
}
}
static extern void GetStruct(ref SharpStruct s);