QueryExpressionEventData 构造函数

定义

命名空间:

Microsoft.EntityFrameworkCore.Diagnostics

程序集:

Microsoft.EntityFrameworkCore.dll

包:

Microsoft.EntityFrameworkCore v9.0.0

重载

QueryExpressionEventData(EventDefinitionBase, Func<EventDefinitionBase,EventData,String>, DbContext, Expression, ExpressionPrinter)

构造事件有效负载。

QueryExpressionEventData(EventDefinitionBase, Func<EventDefinitionBase,EventData,String>, DbContext, Expression, ExpressionPrinter)

Source:

QueryExpressionEventData.cs

构造事件有效负载。

public QueryExpressionEventData (Microsoft.EntityFrameworkCore.Diagnostics.EventDefinitionBase eventDefinition, Func<Microsoft.EntityFrameworkCore.Diagnostics.EventDefinitionBase,Microsoft.EntityFrameworkCore.Diagnostics.EventData,string> messageGenerator, Microsoft.EntityFrameworkCore.DbContext? context, System.Linq.Expressions.Expression queryExpression, Microsoft.EntityFrameworkCore.Query.ExpressionPrinter expressionPrinter);

new Microsoft.EntityFrameworkCore.Diagnostics.QueryExpressionEventData : Microsoft.EntityFrameworkCore.Diagnostics.EventDefinitionBase * Func<Microsoft.EntityFrameworkCore.Diagnostics.EventDefinitionBase, Microsoft.EntityFrameworkCore.Diagnostics.EventData, string> * Microsoft.EntityFrameworkCore.DbContext * System.Linq.Expressions.Expression * Microsoft.EntityFrameworkCore.Query.ExpressionPrinter -> Microsoft.EntityFrameworkCore.Diagnostics.QueryExpressionEventData

Public Sub New (eventDefinition As EventDefinitionBase, messageGenerator As Func(Of EventDefinitionBase, EventData, String), context As DbContext, queryExpression As Expression, expressionPrinter As ExpressionPrinter)

参数

eventDefinition

EventDefinitionBase

事件定义。

messageGenerator

Func<EventDefinitionBase,EventData,String>

生成此事件的日志消息的委托。

context

DbContext

当前 DbContext为 ;如果未知，则 null 为 。

queryExpression

Expression

Expression。

expressionPrinter

ExpressionPrinter

ExpressionPrinter可用于呈现 的 Expression。