我正在尝试制作一个简单的文本编辑器,可以实时为文本着色。我还必须为此使用 DLL 和反射。我想在用户输入时为文本着色。出于这个原因,我有一个复选框。如果选中,文本将在用户键入时着色(实时)。
为此,我编写了一个 DLL 文件。
无论如何,我对反射的东西很陌生。
- 问题:
想请教各位大佬的专业意见,我写的到底能不能叫“用反射”?如果不是,可以指出我出了什么问题吗?
这是我的代码(我已经从中删除了很多东西,所以代码将反映问题,但可能有剩余)
using System;
using System.Drawing;
using System.Windows.Forms;
using System.IO;
using System.Diagnostics;
using System.Reflection;
namespace Editor
{
public class MainForm : Form
{
//Declaration of Controls
private RichTextBox EditRichTextBox;
private CheckBox chkBox;
private int flag = 0;
private Button[] PlugButton;
public string[] PluginNames;
private int NumofPlugins;
public MainForm()
{
//Initialization of Controls
this.EditRichTextBox = new RichTextBox();
this.ErrorTextBox = new RichTextBox();
this.chkBox = new CheckBox();
//Form
this.ClientSize = new Size(700, 500);
this.Name = "MainForm";
this.Text = "C# Editor";
//EditRichTextBox
this.EditRichTextBox.Location = new Point(20, 20);
this.EditRichTextBox.Name = "EditRichTextBox";
this.EditRichTextBox.Size = new Size(this.Width - 150, 300);
this.EditRichTextBox.AcceptsTab = true;
this.EditRichTextBox.Multiline = true;
//Controls on the Form
this.Controls.Add(this.ButtonCompilelib);
this.Controls.Add(this.ButtonCompile);
this.Controls.Add(this.ButtonRun);
this.Controls.Add(this.EditRichTextBox);
this.Controls.Add(this.ErrorTextBox);
this.Controls.Add(this.chkBox);
//CheckBox
this.chkBox.Location = new Point(600,300);
this.chkBox.Name = "chkBox";
this.chkBox.Text = "Color";
};
//My checkbox handler
this.chkBox.Click += (sender,e) =>
{
if(flag == 0)
{
flag = 1;
MessageBox.Show("Coloring Text");
}
else
flag = 0;
};
//My TextBox handler
this.EditRichTextBox.KeyPress += (sender,e) =>
{
try
{
string tmp = Environment.CurrentDirectory + "\\" + "mydll" + ".dll"; Assembly a = Assembly.LoadFrom(tmp);
Type t = a.GetType("MyPlugIn.colorclass");
MethodInfo mi = t.GetMethod("color");
Object obj = Activator.CreateInstance(t);
Object[] Params = new Object[5];
Params[0] = EditRichTextBox.Text;
Params[1] = EditRichTextBox.Handle;
Params[2] = ErrorTextBox.Handle;
Params[3] = EditRichTextBox;
Params[4] = flag;
mi.Invoke(obj, Params);
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
}
};
[STAThread]
static void Main()
{
Application.EnableVisualStyles();
Application.Run(new MainForm());
}
}
}
这是DLL文件
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Drawing;
namespace MyPlugIn
{
public class colorclass
{
public void color(string Text, Object Hndl_Text, Object Hndl_Err, RichTextBox box,int flag)
{
if (flag == 1)
{
int start = box.TextLength;
int end = box.TextLength;
//Textbox may transform chars, so (end-start) != text.Length
box.Select(start, end - start);
{
box.SelectionColor = Color.Blue;
}
box.SelectionLength = 0; // clear
}
}
}
}