c#winform選擇文件,文件夾,打開指定目錄方法

private void btnFile_Click(object sender, EventArgs e)
{
OpenFileDialog fileDialog = new OpenFileDialog();
fileDialog.Multiselect = true;
fileDialog.Title = "請選擇文件";
fileDialog.Filter="全部文件(*.*)|*.*";
if (fileDialog.ShowDialog() == DialogResult.OK)
{
string file=fileDialog.FileName;
MessageBox.Show("已選擇文件:" + file,"選擇文件提示",MessageBoxButtons.OK,MessageBoxIcon.Information);
}
}

private void btnPath_Click(object sender, EventArgs e)
{
FolderBrowserDialog dialog = new FolderBrowserDialog();
dialog.Description = "請選擇文件路徑";
if (dialog.ShowDialog() == DialogResult.OK)
{
string foldPath = dialog.SelectedPath;
MessageBox.Show("已選擇文件夾:" + foldPath, "選擇文件夾提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
}

private void btnOpen_Click(object sender, EventArgs e)
{
System.Diagnostics.Process.Start("Explorer.exe","c:\\windows");
}