C# textbox 拖动控件 App(2) 向文本写入数据，或生成文本

C# textbox 拖动控件 App(2) 向文本写入数据，或生成文本

1.控件的事件可右击控件->控件属性，进行设置

 

2. 文件工具类(FileUtil.cs)

同一个命名空间可直接调用

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
//file
using System.IO;
namespace FileDemo
{
    class UdFileUtil
    {
        public static void readFile(string filePath)
        {//写入
            FileStream fs = new FileStream(filePath, FileMode.Open, FileAccess.Write);
            StreamWriter sw = new StreamWriter(fs);
            for (int i = 0; i < 10; i++)
            {
                sw.WriteLine( "tablenname" + " = {");
                sw.WriteLine( "attr1 = " + "attr_value" + ",");
                sw.WriteLine("}");
            }
            sw.Close();
            fs.Close();
        }
    }
}

 Form1.cs 调用

        private void textBox1_DragEnter(object sender, DragEventArgs e)
        {
            Console.WriteLine(" textBox1_DragEnter");
            //this.textBox1.Cursor = System.Windows.Forms.Cursors.Arrow;//指定鼠标形状 not use
            //this.textBox1.Cursor = System.Windows.Forms.Cursors.IBeam;  not use
            string fullPath = ((System.Array)e.Data.GetData(DataFormats.FileDrop)).GetValue(0).ToString();

            if (File.Exists(fullPath)) //如果是文件的话，则截取
            {
                //string path = fullPath.Substring(0, fullPath.LastIndexOf("\\"));
                textBox1.Text = fullPath; // fullPath文件路径
                string str = fullPath;
                UdFileUtil.readFile(fullPath);
            }
            else
            {
                textBox1.Text = fullPath;
            }
        }

 

 

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