接続機能クラス
Connectで接続、DisConnectで切断。
WNetAddConnection2 と WNetCancelConnection2 の引数と戻り値は下記サイトが詳しい。
public class RemoteHostConnection
{
private NETRESOURCE netResource;
[DllImport("mpr.dll", EntryPoint = "WNetAddConnection2", CharSet = System.Runtime.InteropServices.CharSet.Unicode)]
private static extern int WNetAddConnection2(ref NETRESOURCE lpNetResource, string lpPassword, string lpUsername, Int32 dwFlags);
[DllImport("mpr.dll", EntryPoint = "WNetCancelConnection2", CharSet = System.Runtime.InteropServices.CharSet.Unicode)]
private static extern int WNetCancelConnection2(string lpName, Int32 dwFlags, bool fForce);
private string RemoteHostIP { get; set; }
private string RemoteHostUserID { get; set; }
private string RemoteHostPassword { get; set; }
/// <summary>
/// コンストラクタ
/// </summary>
/// <param name="remoteHostIP">リモートコンピュータのIP。( 例：192.168.1.1 )</param>
/// <param name="remoteHostUserID">ログインID ( 例：user )</param>
/// <param name="remoteHostPassword">パスワード ( 例：password )</param>
public RemoteHostConnection(string remoteHostIP, string remoteHostUserID, string remoteHostPassword)
{
RemoteHostIP = $@"\\{remoteHostIP}";
RemoteHostUserID = remoteHostUserID;
RemoteHostPassword = remoteHostPassword;
}
[StructLayout(LayoutKind.Sequential)]
public struct NETRESOURCE
{
public int dwScope;
public int dwType;
public int dwDisplayType;
public int dwUsage;
[MarshalAs(UnmanagedType.LPWStr)]
public string lpLocalName;
[MarshalAs(UnmanagedType.LPWStr)]
public string lpRemoteName;
[MarshalAs(UnmanagedType.LPWStr)]
public string lpComment;
[MarshalAs(UnmanagedType.LPWStr)]
public string lpProvider;
}
//(戻り値 == 0)は成功。 0以外は失敗。
public int Connect()
{
netResource.dwScope = 0;
netResource.dwType = 1;
netResource.dwDisplayType = 0;
netResource.dwUsage = 0;
netResource.lpLocalName = null;
netResource.lpRemoteName = RemoteHostIP;
netResource.lpProvider = null;
int ret = WNetCancelConnection2(RemoteHostIP, 0, true);
ret = WNetAddConnection2(ref netResource, RemoteHostPassword, RemoteHostUserID, 0);
return ret;
}
//(戻り値 == 0)は成功。 0以外は失敗。
public int DisConnect()
{
return WNetCancelConnection2(RemoteHostIP, 0, true);
}
}
使い方
var connection = new RemoteHostConnection("192.168.1.1","user","password");
if(connection.Connect() == 0)
{
//共有フォルダにファイルコピーしたり削除したりする。
connection.DisConnect();
}
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