CoreLoggerExtensions.QueryCompilationStarting Metode

Definisi

Ruang nama:

Microsoft.EntityFrameworkCore.Diagnostics

Rakitan:

Microsoft.EntityFrameworkCore.dll

Paket:

Microsoft.EntityFrameworkCore v8.0.0

Overload

QueryCompilationStarting(IDiagnosticsLogger<DbLoggerCategory.Query>, DbContext, ExpressionPrinter, Expression)

Log untuk peristiwa tersebut QueryCompilationStarting .

QueryCompilationStarting(IDiagnosticsLogger<DbLoggerCategory.Query>, DbContext, ExpressionPrinter, Expression)

Log untuk peristiwa tersebut QueryCompilationStarting .

public static (System.Linq.Expressions.Expression Query, Microsoft.EntityFrameworkCore.Diagnostics.QueryExpressionEventData? EventData) QueryCompilationStarting (this Microsoft.EntityFrameworkCore.Diagnostics.IDiagnosticsLogger<Microsoft.EntityFrameworkCore.DbLoggerCategory.Query> diagnostics, Microsoft.EntityFrameworkCore.DbContext? context, Microsoft.EntityFrameworkCore.Query.ExpressionPrinter expressionPrinter, System.Linq.Expressions.Expression queryExpression);

static member QueryCompilationStarting : Microsoft.EntityFrameworkCore.Diagnostics.IDiagnosticsLogger<Microsoft.EntityFrameworkCore.DbLoggerCategory.Query> * Microsoft.EntityFrameworkCore.DbContext * Microsoft.EntityFrameworkCore.Query.ExpressionPrinter * System.Linq.Expressions.Expression -> ValueTuple<System.Linq.Expressions.Expression, Microsoft.EntityFrameworkCore.Diagnostics.QueryExpressionEventData>

<Extension()>
Public Function QueryCompilationStarting (diagnostics As IDiagnosticsLogger(Of DbLoggerCategory.Query), context As DbContext, expressionPrinter As ExpressionPrinter, queryExpression As Expression) As ValueTuple(Of Expression, QueryExpressionEventData)

Parameter

diagnostics

IDiagnosticsLogger<DbLoggerCategory.Query>

Pencatat diagnostik yang akan digunakan.

context

DbContext

Saat ini DbContext, atau null jika tidak diketahui.

expressionPrinter

ExpressionPrinter

Digunakan untuk membuat representasi pohon ekspresi yang dapat dibaca manusia.

queryExpression

Expression

Pohon ekspresi kueri.

Mengembalikan

ValueTuple<Expression,QueryExpressionEventData>

Ekspresi kueri dan data peristiwa.