我正在尝试向富文本框添加一个可点击的链接，上面写着“启动 RDP”，因此当用户单击它时，它将启动 Windows 远程桌面并使用将机器名称放入框中。到目前为止，这是我的代码，它在 Active Directory 中搜索用户输入的计算机名称，ping 计算机，如果它在线，则在另一个文本框中显示其状态。
private void btnAd_Click(object sender, EventArgs e)
{
var adsb = new StringBuilder();
var mssb = new StringBuilder();
DirectoryEntry de = new DirectoryEntry();
de.Path = "LDAP://dc=Domain.org";
try
{
string wildcard = "*";
string adser = wildcard + txtAd.Text + wildcard;
DirectorySearcher ser = new DirectorySearcher();
ser.SizeLimit = System.Int32.MaxValue;
ser.PageSize = System.Int32.MaxValue;
ser.Filter = "(&(ObjectCategory=computer)(name=" + adser + "))"; //Only allows Computers to be returned in results.
SearchResultCollection results = ser.FindAll();
if (String.IsNullOrEmpty(txtcomputers.Text)) //if the textbox is empty, write ad search results to textbox
{
foreach (SearchResult res in results)
{
string[] temp = res.Path.Split(','); //temp[0] would contain the computer name ex: cn=computerName,..
adsb.AppendLine(temp[0].Substring(10));//returns everything after LDAP://CN= until end of temp[0].
if (Ping(temp[0].Substring(10)))
{
mssb.AppendLine(temp[0].Substring(10) + "....Online");
}
else
{
mssb.AppendLine(temp[0].Substring(10) + "....Offline");
}
}
rtbComputerstatus.Text = mssb.ToString();
txtcomputers.Text = adsb.ToString();
}
else //Add items to textbox if there are already items present.
{
txtcomputers.AppendText(Environment.NewLine);
rtbComputerstatus.AppendText(Environment.NewLine);
foreach (SearchResult res in results)
{
string[] temp = res.Path.Split(',');
adsb.AppendLine(temp[0].Substring(10));
txtcomputers.AppendText(adsb.ToString());
if (Ping(temp[0].Substring(10)))
{
mssb.AppendLine(temp[0].Substring(10) + "....Online......");
}
else
{
mssb.AppendLine(temp[0].Substring(10) + "....Offline");
}
rtbComputerstatus.AppendText(mssb.ToString());
}
}
//trims spaces
this.txtcomputers.Text = this.txtcomputers.Text.Trim();
txtcomputers.CharacterCasing = CharacterCasing.Upper;
//color items
HighlightPhrase(rtbComputerstatus, "Online",Color.Green);
HighlightPhrase(rtbComputerstatus, "Offline", Color.Red);
HighlightPhrase(rtbComputerstatus, "RDP", Color.Blue);
}
catch (Exception ex)
{
MessageBox.Show(ex.ToString());
}
finally
{
de.Dispose();//Clean up resources
}
}
// color method
static void HighlightPhrase(RichTextBox box, string phrase, Color color)
{
int pos = box.SelectionStart;
string s = box.Text;
for (int ix = 0; ; )
{
int jx = s.IndexOf(phrase, ix, StringComparison.CurrentCultureIgnoreCase);
if (jx < 0) break;
box.SelectionStart = jx;
box.SelectionLength = phrase.Length;
box.SelectionColor = color;
ix = jx + 1;
}
box.SelectionStart = pos;
box.SelectionLength = 0;
}
//ping method
public static bool Ping(string hostName)
{
bool result = false;
try
{
Ping pingSender = new Ping(); PingOptions options = new PingOptions();
// Use the default Ttl value which is 128,
// but change the fragmentation behavior.
options.DontFragment = true;
// Create a buffer of 32 bytes of data to be transmitted.
string data = "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa";
byte[] buffer = Encoding.ASCII.GetBytes(data);
int timeout = 120;
PingReply reply = pingSender.Send(hostName, timeout, buffer, options); if (reply.Status == IPStatus.Success)
{
result = true;
}
else
{
result = false;
}
}
catch
{
result = false;
}
return result;
}
有什么建议么 ？我尝试了一些不同的方法，但似乎无法使其正常工作。
谢谢 ！