Question

如何在WPF应用程序中使用RichTextBox Target？我不希望有一个单独的日志窗口，我希望所有日志消息都在WPF对话框中的richTextBox中输出。

我试过在里面使用带有RichTextBox框的WindowsFormsHost，但这对我不起作用：NLog无论如何都打开了单独的Windows窗体。

Answer 1

同时解决方法是使用3个可用类here，然后按照以下步骤操作：

将3个文件导入项目
如果不是这种情况，请使用Project > Add Reference添加对WPF程序集的引用：WindowsBase, PresentationCore, PresentationFramework。

在WpfRichTextBoxTarget.cs中，将第188-203行替换为：

    //this.TargetRichTextBox.Invoke(new DelSendTheMessageToRichTextBox(this.SendTheMessageToRichTextBox), new object[] { logMessage, matchingRule });
    if (System.Windows.Application.Current.Dispatcher.CheckAccess() == false) {
        System.Windows.Application.Current.Dispatcher.Invoke(new Action(() => {
            SendTheMessageToRichTextBox(logMessage, matchingRule);
        }));
    }
    else {
        SendTheMessageToRichTextBox(logMessage, matchingRule);
    }
}

private static Color GetColorFromString(string color, Brush defaultColor) {
    if (defaultColor == null) return Color.FromRgb(255, 255, 255); // This will set default background colour to white.
    if (color == "Empty") {
        return (Color)colorConverter.ConvertFrom(defaultColor);
    }

    return (Color)colorConverter.ConvertFromString(color);
}

在您的代码中，配置新目标，如下所示：

我希望它有所帮助，但它绝对不是一个全面的实施......

public void loading() {
    var target = new WpfRichTextBoxTarget();
    target.Name = "console";
    target.Layout = "${longdate:useUTC=true}|${level:uppercase=true}|${logger}::${message}";
    target.ControlName = "rtbConsole"; // Name of the richtextbox control already on your window
    target.FormName = "MonitorWindow"; // Name of your window where there is the richtextbox, but it seems it will not really be taken into account, the application mainwindow will be used instead.
    target.AutoScroll = true;
    target.MaxLines = 100000;
    target.UseDefaultRowColoringRules = true;
    AsyncTargetWrapper asyncWrapper = new AsyncTargetWrapper();
    asyncWrapper.Name = "console";
    asyncWrapper.WrappedTarget = target;
    SimpleConfigurator.ConfigureForTargetLogging(asyncWrapper, LogLevel.Trace);
}

Answer 2

如果在配置文件中定义RichTextBoxTarget，则会自动创建新表单。这是因为NLog在创建（命名）表单和控件之前初始化。即使你没有任何指向目标的规则。也许有一个更好的解决方案，但我通过以编程方式创建目标来解决它：

using NLog;
//[...]
RichTextBoxTarget target = new RichTextBoxTarget();
target.Name = "RichTextBox";
target.Layout = "${longdate} ${level:uppercase=true} ${logger} ${message}";
target.ControlName = "textbox1";
target.FormName = "Form1";
target.AutoScroll = true;
target.MaxLines = 10000;
target.UseDefaultRowColoringRules = false;
target.RowColoringRules.Add(
    new RichTextBoxRowColoringRule(
        "level == LogLevel.Trace", // condition
        "DarkGray", // font color
        "Control", // background color
        FontStyle.Regular
    )
);
target.RowColoringRules.Add(new RichTextBoxRowColoringRule("level == LogLevel.Debug", "Gray", "Control"));
target.RowColoringRules.Add(new RichTextBoxRowColoringRule("level == LogLevel.Info", "ControlText", "Control"));
target.RowColoringRules.Add(new RichTextBoxRowColoringRule("level == LogLevel.Warn", "DarkRed", "Control"));
target.RowColoringRules.Add(new RichTextBoxRowColoringRule("level == LogLevel.Error", "White", "DarkRed", FontStyle.Bold));
target.RowColoringRules.Add(new RichTextBoxRowColoringRule("level == LogLevel.Fatal", "Yellow", "DarkRed", FontStyle.Bold));

AsyncTargetWrapper asyncWrapper = new AsyncTargetWrapper();
asyncWrapper.Name = "AsyncRichTextBox";
asyncWrapper.WrappedTarget = target;

SimpleConfigurator.ConfigureForTargetLogging(asyncWrapper, LogLevel.Trace);

如何在WPF应用程序中使用NLog的RichTextBox Target？

2 个答案: