打开文件，文件夹

private void btnFile_Click(object sender, EventArgs e)
{
OpenFileDialog fileDialog = new OpenFileDialog();
fileDialog.Multiselect = true;
fileDialog.Title = "请选择文件";
fileDialog.Filter="所有文件(*.*)|*.*";
if (fileDialog.ShowDialog() == DialogResult.OK)
{
string file=fileDialog.FileName;
MessageBox.Show("已选择文件:" + file,"选择文件提示",MessageBoxButtons.OK,MessageBoxIcon.Information);
}
}

private void btnPath_Click(object sender, EventArgs e)
{
FolderBrowserDialog dialog = new FolderBrowserDialog();
dialog.Description = "请选择文件路径";
if (dialog.ShowDialog() == DialogResult.OK)
{
string foldPath = dialog.SelectedPath;
MessageBox.Show("已选择文件夹:" + foldPath, "选择文件夹提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
}

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