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/* // 저장 프로시저 사용할때 // 반환 값 파라미터 var returnParam = new SqlParameter(); returnParam.Direction = ParameterDirection.ReturnValue; returnParam.SqlDbType = SqlDbType.Int; returnParam.ParameterName = "@RETURN_VALUE"; // 꼭 명시! cmd.Parameters.Add(returnParam); cmd.ExecuteNonQuery(); // 반환값 읽기 int _RTN = (int)cmd.Parameters["@RETURN_VALUE"].Value; */ // 저장 프로시저가 아니면 // SELECT 1, SELECT 3 값은 ExecuteScalar..

Rectangle의 색상을 변경할 때는 Fill 속성을 사용해야 합니다. BackgroundColor는 BoxView와 같은 다른 요소에서 사용되며, Rectangle에서는 Fill 속성을 통해 색상을 설정합니다.

기기에서 > 개발자옵션 > USB디버깅, 무선디버깅을 선택한다.VS2022 도구 > Android > Android adb 명령 프롬프트명령프롬프트에서: : adb devices(연결된 deives list): adb tcpip 5555(만약 error: more than one devcie/emulator 라고 에러가 나온다면 이것은 실기기와 에뮬레이터가 대상이어서 그렇다.Android 에뮬레이터를 꺼주고 다시 adb tcpip 5555 진행해서 오류가 없음을 확인한다.): adb connect 192.168.100.102:5555(connected to 192.168.100.102:5555를 확인한다.)VS2022에서 실기기를 선택하고 debugging 하면된다.참고)기기를 삭제하려면: adb kil..

public GXSerial(Context contect)     {         _contect = contect;         _Receiver = new GXUsbReciever(this);         IntentFilter filter = new IntentFilter(" Gurux.Serial "); //        filter.AddAction(UsbManager.ActionUsbAccessoryDetached);         filter.AddAction(UsbManager.ActionUsbDeviceAttached);         filter.AddAction(UsbManager.ActionUsbDeviceDetached);         if (Android.OS.Build...

dotnet build -t:InstallAndroidDependencies -f:net8.0-android -p:AndroidSdkDirectory="$HOME/Library/Android/sdk" -p:JavaSdkDirectory="/Library/Java/JavaVirtualMachines/Microsoft-17.jdk/Contents/Home" -p:AcceptAndroidSDKLicenses=True

SELECT Category, -- Replace with your actual column name for category COUNT(*) AS Count, CAST(COUNT(*) * 100.0 / SUM(COUNT(*)) OVER () AS decimal(10,2)) AS Percentage FROM YourTable GROUP BY Category;Result-------------------------Category     Count     PercentageM                    10                 10.0W                    90                 90.0

Create Table SaveChat ( ChatDate Date , ChatVar varchar(20),  ChatName varchar(50),  ChatCount Integer, Constraint tb_product_group_PK Primary Key(ChatDate,ChatName) )------------------------------------------------------------------------------------INSERT INTO SaveChat (ChatDate, ChatVar, ChatName, ChatCount) VALUES (@ChatDate, @ChatVar, @ChatName, @ChatCount) ON CONFLICT(ChatDate, ChatName) D..

Platforms > Android > MainAppication 에서 //protected override MauiApp CreateMauiApp() => MauiProgram.CreateMauiApp(); protected override MauiApp CreateMauiApp() { // Remove Entry control underline Microsoft.Maui.Handlers.EntryHandler.Mapper.AppendToMapping("NoUnderline", (h, v) => { h.PlatformView.BackgroundTintList = Android.Content.Res.ColorStateList.ValueOf(Colors.Transparent.ToAndroid()); });..

.Net 7 라즈베리파이 설치 wget -O - https://raw.githubusercontent.com/pjgpetecodes/dotnet7pi/master/install.sh | sudo bash 참고> pjgpetecodes/dotnet7pi: Install .NET 7 on a Raspberry Pi with a single line. (github.com)

Error. An error occurred while processing your request. Request ID: Development Mode Swapping to the Development environment displays detailed information about the error that occurred. The Development environment shouldn't be enabled for deployed applications. It can result in displaying sensitive information from exceptions to end users. For local debugging, enable the Development environment ..