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SQLVision.Visualizers/Visualizers/TextVisualizer.cs

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+using Microsoft.UI.Xaml;
+using Microsoft.UI.Xaml.Controls;
+using SQLVision.Core.Enums;
+using SQLVision.Core.Models;
+using SQLVision.Visualizers.Interfaces;
+using System.Data;
+using System.Text;
+
+namespace SQLVision.Visualizers.Visualizers;
+
+public class TextVisualizer : IVisualizer
+{
+    public FrameworkElement Visualize(DataTable data, OutputDefinition definition)
+    {
+        var textBlock = new TextBlock
+        {
+            Text = ConvertDataTableToText(data),
+            TextWrapping = TextWrapping.Wrap,
+            FontFamily = new Microsoft.UI.Xaml.Media.FontFamily("Consolas"),
+            FontSize = 12,
+            IsTextSelectionEnabled = true
+        };
+
+        return new ScrollViewer
+        {
+            Content = textBlock,
+            VerticalScrollBarVisibility = ScrollBarVisibility.Auto,
+            HorizontalScrollBarVisibility = ScrollBarVisibility.Auto
+        };
+    }
+
+    private string ConvertDataTableToText(DataTable data)
+    {
+        var sb = new StringBuilder();
+
+        // Заголовки
+        for (int i = 0; i < data.Columns.Count; i++)
+        {
+            sb.Append(data.Columns[i].ColumnName);
+            if (i < data.Columns.Count - 1)
+                sb.Append(" | ");
+        }
+        sb.AppendLine();
+        sb.AppendLine(new string('-', data.Columns.Count * 20));
+
+        // Данные
+        foreach (DataRow row in data.Rows)
+        {
+            for (int i = 0; i < data.Columns.Count; i++)
+            {
+                var value = row[i];
+                var text = value?.ToString() ?? "NULL";
+
+                // Обрезаем слишком длинные значения
+                if (text.Length > 50)
+                    text = text.Substring(0, 47) + "...";
+
+                sb.Append(text);
+
+                if (i < data.Columns.Count - 1)
+                    sb.Append(" | ");
+            }
+            sb.AppendLine();
+        }
+
+        return sb.ToString();
+    }
+
+    public bool CanVisualize(OutputType type) => type == OutputType.Text;
+}