Fix C# examples in documentation

- Fix documentation after C# renames.
- Add missing `partial` in C# class declarations.
- Change `delta` parameter type to `double` in C#.
- Ensure parameters match base declaration.
- Use `$` string interpolation in C#.
- Fix invalid or outdated C# code.
- Changed some examples to follow our style guide more closely.

1 files changed, 22 insertions, 16 deletions

diff --git a/doc/classes/EditorImportPlugin.xml b/doc/classes/EditorImportPlugin.xml
index ec9efcc9c4..b30ce5a528 100644
--- a/doc/classes/EditorImportPlugin.xml
+++ b/doc/classes/EditorImportPlugin.xml
@@ -48,61 +48,67 @@
 		[/gdscript]
 		[csharp]
 		using Godot;
-		using System;
 
-		public class MySpecialPlugin : EditorImportPlugin
+		public partial class MySpecialPlugin : EditorImportPlugin
 		{
-		    public override String GetImporterName()
+		    public override string _GetImporterName()
 		    {
 		        return "my.special.plugin";
 		    }
 
-		    public override String GetVisibleName()
+		    public override string _GetVisibleName()
 		    {
 		        return "Special Mesh";
 		    }
 
-		    public override Godot.Collections.Array GetRecognizedExtensions()
+		    public override string[] _GetRecognizedExtensions()
 		    {
-		        return new Godot.Collections.Array{"special", "spec"};
+		        return new string[] { "special", "spec" };
 		    }
 
-		    public override String GetSaveExtension()
+		    public override string _GetSaveExtension()
 		    {
 		        return "mesh";
 		    }
 
-		    public override String GetResourceType()
+		    public override string _GetResourceType()
 		    {
 		        return "Mesh";
 		    }
 
-		    public override int GetPresetCount()
+		    public override int _GetPresetCount()
 		    {
 		        return 1;
 		    }
 
-		    public override String GetPresetName(int i)
+		    public override string _GetPresetName(int presetIndex)
 		    {
 		        return "Default";
 		    }
 
-		    public override Godot.Collections.Array GetImportOptions(int i)
+		    public override Godot.Collections.Array<Godot.Collections.Dictionary> _GetImportOptions(string path, int presetIndex)
 		    {
-		        return new Godot.Collections.Array{new Godot.Collections.Dictionary{{"name", "myOption"}, {"defaultValue", false}}};
+		        return new Godot.Collections.Array<Godot.Collections.Dictionary>
+		        {
+		            new Godot.Collections.Dictionary
+		            {
+		                { "name", "myOption" },
+		                { "defaultValue", false },
+		            }
+		        };
 		    }
 
-		    public override int Import(String sourceFile, String savePath, Godot.Collections.Dictionary options, Godot.Collections.Array platformVariants, Godot.Collections.Array genFiles)
+		    public override int _Import(string sourceFile, string savePath, Godot.Collections.Dictionary options, Godot.Collections.Array<string> platformVariants, Godot.Collections.Array<string> genFiles)
 		    {
-		        var file = new File();
-		        if (file.Open(sourceFile, File.ModeFlags.Read) != Error.Ok)
+		        using var file = FileAccess.Open(sourceFile, FileAccess.ModeFlags.Read);
+		        if (file.GetError() != Error.Ok)
 		        {
 		            return (int)Error.Failed;
 		        }
 
 		        var mesh = new ArrayMesh();
 		        // Fill the Mesh with data read in "file", left as an exercise to the reader.
-		        String filename = savePath + "." + GetSaveExtension();
+		        string filename = $"{savePath}.{_GetSaveExtension()}";
 		        return (int)ResourceSaver.Save(mesh, filename);
 		    }
 		}