RichTextBox target - NLog/NLog GitHub Wiki

Log text a Rich Text Box control in an existing or new form.

Platforms Supported: .NetFramework + NETCore3.1 + NET6.0 - Requires nuget-package NLog.Windows.Forms

<targets>
  <target xsi:type="RichTextBox"
          name="String"
          layout="Layout"
          height="Integer"
          autoScroll="Boolean"
          maxLines="Integer"
          showMinimized="Boolean"
          toolWindow="Boolean"
          controlName="String"
          formName="String"
          width="Integer"
          useDefaultRowColoringRules="Boolean">
    <word-coloring backgroundColor="String" fontColor="String" ignoreCase="Boolean"
                regex="String" style="Enum" text="String"
                wholeWords="Boolean"/><!-- repeated -->
    <row-coloring backgroundColor="String" condition="Condition" fontColor="String"
               style="Enum"/><!-- repeated -->
  </target>
</targets>

Read more about using the Configuration File.

• name - Name of the target.

• layout - Layout used to format log messages. Required. Default: ${longdate}|${level:uppercase=true}|${logger}|${message:withexception=true}

• height - Initial height of the form with rich text box.

  This parameter is ignored when logging to existing form control.

• autoScroll - Indicates whether scroll bar will be moved automatically to show most recent log entries.

• maxLines - Maximum number of lines the rich text box will store (or 0 to disable this feature).

  After exceeding the maximum number, first line will be deleted.

• showMinimized - Indicates whether the created form will be initially minimized.

  This parameter is ignored when logging to existing form control.

• toolWindow - Indicates whether the created window will be a tool window. Default: True

  This parameter is ignored when logging to existing form control. Tool windows have thin border, and do not show up in the task bar.

• controlName - Name of RichTextBox to which Nlog will write.

• formName - Name of the Form on which the control is located. If there is no open form of a specified name then NLog will create a new one.

• width - Initial width of the form with rich text box.

  This parameter is ignored when logging to existing form control.

• wordColoringRules - The word highlighting rules. Collection
  Each collection item is represented by <word-coloring /> element with the following attributes:

  • backgroundColor - Background color. Names are identical with KnownColor enum extended with Empty value which means that background color won't be changed. Default: Empty
  • fontColor - Font color. Names are identical with KnownColor enum extended with Empty value which means that font color won't be changed. Default: Empty
  • ignoreCase - Indicates whether to ignore case when comparing texts. Boolean Default: False
  • regex - Regular expression to be matched. You must specify either text or regex.
  • style - Font style of matched text. Possible values are the same as in FontStyle enum in System.Drawing. Possible values:
    • Bold -
    • Italic -
    • Regular -
    • Strikeout -
    • Underline -

• text - Text to be matched. You must specify either text or regex.

• wholeWords - Indicates whether to match whole words only. Boolean Default: False

• useDefaultRowColoringRules - Indicates whether to use default coloring rules.Boolean Default: False

• rowColoringRules - The row coloring rules. Collection
  Each collection item is represented by <row-coloring /> element with the following attributes:

  • backgroundColor - Background color. Names are identical with KnownColor enum extended with Empty value which means that background color won't be changed. Default: Empty
  • fontColor - Font color. Names are identical with KnownColor enum extended with Empty value which means that font color won't be changed. Default: Empty
  • ignoreCase - Indicates whether to ignore case when comparing texts. Boolean Default: False
  • regex - Regular expression to be matched. You must specify either text or regex.
  • style - Font style of matched text. Possible values are the same as in FontStyle enum in System.Drawing.
    Possible values:
    • Bold -
    • Italic -
    • Regular -
    • Strikeout -
    • Underline - Possible values are the same as in FontStyle enum in System.Drawing