[DllImport("Shlwapi.dll", SetLastError = true, CharSet = CharSet.Auto)]
public extern static bool PathFileExists(string path);
void Exists()
{
{ // A StringBuilder is required for interops calls that use strings
StringBuilder builder = new StringBuilder();
builder.Append(@"C:\test.txt"); bool exists = PathFileExists(builder.ToString());
}
来源:https://www.cnblogs.com/Jian-Zhang/p/6070435.html