Added new kb article editor-parsing-comments-list-radeditor-content (#527)

Co-authored-by: KB Bot <[email protected]>

Author: github-actions[bot]

knowledge-base/editor-parsing-comments-list-radeditor-content.md

@@ -0,0 +1,83 @@
+---
+title: Parsing Comments in a List from RadEditor Content
+description: Learn how to parse out all the comments in a list from the content of RadEditor using VB.NET or C# in a button click event.
+type: how-to
+page_title: Parsing Comments in a List from RadEditor Content
+slug: editor-parsing-comments-list-radeditor-content
+tags: radeditor, comments, list, parse, vb.net, c#
+res_type: kb
+---
+
+## Environment
+| Product | RadEditor for ASP.NET AJAX |
+| ------- | ------------------------- |
+| Version | all               |
+
+## Description
+I want to parse out all the comments in a list from the content of RadEditor using VB.NET or C# in a button click event.
+
+## Solution
+To parse out all the comments in a list from the content of RadEditor in a button click event, follow these steps:
+
+1. Get the content from the RadEditor control.
+2. Use a regular expression to find `<span>` tags with the `reComment` class and extract the comment attribute.
+3. Create a list to hold the comments.
+4. Match all instances and extract the comments.
+5. Output the comments to a label or any other control.
+
+Here's an example solution using VB.NET:
+
+````C#
+protected void btnExtractComments_Click(object sender, EventArgs e)
+{
+    // Get the content from RadEditor
+    string editorContent = theEditor.Content;
+
+    // Regular expression to find span tags with the reComment class and extract the comment attribute
+    Regex regex = new Regex("<span[^>]*class=\"[^\"]*reComment[^\"]*\"[^>]*comment=\"(.*?)\"[^>]*>", RegexOptions.IgnoreCase);
+
+    // Create a list to hold the comments
+    List<string> commentsList = new List<string>();
+
+    // Match all instances and extract comments
+    foreach (Match match in regex.Matches(editorContent))
+    {
+        if (match.Success)
+        {
+            // Extract the comment attribute
+            string comment = match.Groups[1].Value;
+            commentsList.Add(comment);
+        }
+    }
+
+    // Output the comments to a label or any other control
+    lblComments.Text = string.Join("<br/>", commentsList);
+}
+````
+````VB
+Protected Sub btnExtractComments_Click(sender As Object, e As EventArgs)
+    ' Get the content from RadEditor
+    Dim editorContent As String = theEditor.Content
+
+    ' Regular expression to find span tags with the reComment class and extract the comment attribute
+    Dim regex As New Regex("<span[^>]*class=""[^""]*reComment[^""]*""[^>]*comment=""(.*?)""[^>]*>", RegexOptions.IgnoreCase)
+
+    ' Create a list to hold the comments
+    Dim commentsList As New List(Of String)
+
+    ' Match all instances and extract comments
+    For Each match As Match In regex.Matches(editorContent)
+        If match.Success Then
+            ' Extract the comment attribute
+            Dim comment As String = match.Groups(1).Value
+            commentsList.Add(comment)
+        End If
+    Next
+
+    ' Output the comments to a label or any other control
+    lblComments.Text = String.Join("<br/>", commentsList)
+End Sub
+````
+
+You can modify this code per your requirements and use it to parse out the comments from the RadEditor content in a button-click event.
+