CoreLoggerExtensions.QueryCompilationStarting 方法

定義

命名空間:

Microsoft.EntityFrameworkCore.Diagnostics

組件:

Microsoft.EntityFrameworkCore.dll

套件:

Microsoft.EntityFrameworkCore v9.0.0

多載

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

QueryCompilationStarting事件的記錄。

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

來源:

CoreLoggerExtensions.cs

QueryCompilationStarting事件的記錄。

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)

參數

diagnostics

IDiagnosticsLogger<DbLoggerCategory.Query>

要使用的診斷記錄器。

context

DbContext

目前的 DbContext ，如果不知道，則 null 為 。

expressionPrinter

ExpressionPrinter

用來建立人類看得懂的運算式樹狀結構標記法。

queryExpression

Expression

查詢運算式樹狀結構。

傳回

ValueTuple<Expression,QueryExpressionEventData>

查詢運算式和事件資料。