c# – Log4net以编程方式配置adoAppender

我需要在现有的log4net配置中添加一个ado appender.

我需要通过代码添加它.但是我坚持添加常见的字符串参数,如消息,因为我无法正确定义布局属性：在xml配置中,我们使用PatternLayout,但是通过代码PatternLayout不是IRowLayout所以我有以下代码的错误：

public static void AddStringParameterToAppender(this log4net.Appender.adonetappender appender,string paramName,int size,string conversionPattern)
    {
        log4net.Appender.adonetappenderParameter param = new log4net.Appender.adonetappenderParameter();
        param.ParameterName = paramName;
        param.DbType = System.Data.DbType.String;
        param.Size = size;
        param.Layout = new log4net.Layout.PatternLayout(conversionPattern);
        appender.AddParameter(param);
    }

有人知道如何在代码中添加字符串参数,类似于以下xml示例：

<parameter>
    <parameterName value="@message" />
    <dbType value="String" />
    <size value="4000" />
    <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%message" />
    </layout>
</parameter>

解决方法

我终于找到了如何在IRawLayout中转换PatternLayout.

为此,您必须使用log4net.Layout.Layout2RawLayoutAdapter：

public static void AddStringParameterToAppender(this log4net.Appender.adonetappender appender,string conversionPattern)
    {
        log4net.Appender.adonetappenderParameter param = new log4net.Appender.adonetappenderParameter();
        param.ParameterName = paramName;
        param.DbType = System.Data.DbType.String;
        param.Size = size;
        param.Layout = new log4net.Layout.Layout2RawLayoutAdapter(new log4net.Layout.PatternLayout(conversionPattern));
        appender.AddParameter(param);
    }