简单实现winform编辑器

本文实例为大家分享了winform编辑器的具体实现代码，供大家参考，具体内容如下

using system;
using system.collections.generic;
using system.componentmodel;
using system.data;
using system.drawing;
using system.linq;
using system.text;
using system.threading.tasks;
using system.windows.forms;
using system.data.sqlclient;
using system.io;

namespace winformdemo
{
 public partial class form1 : form
 {
  public form1()
  {
   initializecomponent();
   //让textbox2隐藏
   this.textbox2.visible = false;
   //让datagridview1表中的最后一行空值隐藏掉
   this.datagridview1.allowusertoaddrows = false;
  }
  sqlconnection con = new sqlconnection();
  sqlcommand com = new sqlcommand();
  openfiledialog open = new openfiledialog();
  /// <summary>
  /// 行
  /// </summary>
  string clickrow = "";
  /// <summary>
  /// 列
  /// </summary>
  string clickcells = "";
  /// <summary>
  /// 行和列相加的字符串
  /// </summary>

  string sqllanding = "server=.;uid=sa;pwd=123456789;database=myfirstdemo";
  private void datagridview1_cellcontentclick(object sender, datagridviewcelleventargs e)
  {
   //获取正在点击的行和列。
   clickrow = this.datagridview1.rows[e.rowindex].cells[0].value.tostring();
   clickcells = this.datagridview1.rows[e.rowindex].cells[1].value.tostring();
  }

  private void form1_load(object sender, eventargs e)
  {
   selectinfo();
  }
  public void selectinfo()
  {
   //断开式链接查看数据库数据
   con.connectionstring = sqllanding;
   com.commandtext = "select name as 文件名,txtlujing as 文件路径 from txtbianjiqi";
   com.connection = con;
   dataset ds = new dataset();
   sqldataadapter sda = new sqldataadapter(com);
   sda.fill(ds);
   this.datagridview1.datasource = ds.tables[0];
  }
  private void 打开toolstripmenuitem_click(object sender, eventargs e)
  {
   string filepath = clickcells + clickrow;
   this.textbox2.visible = true;
   try
   {
    //只读流；
    filestream fss = new filestream(filepath, filemode.openorcreate, fileaccess.read);
    streamreader sww = new streamreader(fss, encoding.default);
    textbox2.text = sww.readtoend();
    sww.close();
    fss.close();
   }
   catch (exception ex)
   {
    //如果没有选择路径提示出一句话；
    messagebox.show("查看路径错误：" + ex.message);
   }
  }

  private void 保存toolstripmenuitem_click(object sender, eventargs e)
  {
   string filepath = clickcells + clickrow;
   try
   {
    //只写流；
    filestream fss = new filestream(filepath, filemode.create, fileaccess.write);
    streamwriter sww = new streamwriter(fss, encoding.default);
    sww.write(textbox2.text);
    sww.close();
    fss.close();
    messagebox.show("保存成功！");
   }
   catch (exception ex)
   {
    //如果没有选择路径提示出一句话；
    messagebox.show("保存路径错误：" + ex.message);
   }
   this.textbox2.visible = false;
  }

  private void 新建toolstripmenuitem_click(object sender, eventargs e)
  {
   this.textbox2.text = "";
   string localfilepath = "";
   string filenameext = "";
   string flie = "";
   savefiledialog savefiledialog = new savefiledialog();
   //打开默认的文件目录
   savefiledialog.initialdirectory = "d:\\\\text\\";
   //文件后缀名
   savefiledialog.filter = "文本文件(*.txt)|*.txt|所有文件(*.*)|*.*";
   savefiledialog.filterindex = 2;
   string lujing = savefiledialog.initialdirectory;
   if (savefiledialog.showdialog() == dialogresult.ok)
   {
    flie = savefiledialog.filename;
    //文件目录名
    localfilepath = savefiledialog.filename.tostring();
    //截取文件名字
    filenameext = localfilepath.substring(localfilepath.lastindexof("\\") + 1);
   }
   string sql = "select name from txtbianjiqi";
   sqlcommand co = new sqlcommand(sql, con);
   sqldataadapter da = new sqldataadapter(co);
   dataset dss = new dataset();
   da.fill(dss);
   //循环判断传入的表中name
   for (int i = 0; i < dss.tables[0].rows.count; i++)
   {
    //定一个变量去接获取出来name
    string ss = dss.tables[0].rows[i][0].tostring();
    //判断对话框里输入的值是否与查出来的name相同
    if (filenameext == ss)
    {
     messagebox.show("文件已更改！");
     return;
    }
   }
   try
   {
    //只写流
    filestream fs = new filestream(flie, filemode.create, fileaccess.write);
    streamwriter sw = new streamwriter(fs, encoding.default);//对话框另存为。
    sw.write(textbox2.text);
    sw.flush();
    fs.close();
    con.connectionstring = sqllanding;
    //往数据库添加 文件名和路径名 sql语句
    com.commandtext = string.format("insert into txtbianjiqi(name,txtlujing)values('{0}','{1}')", filenameext, lujing);
    com.connection = con;
    con.open();
    int insertinto = convert.toint32(com.executescalar());
    if (insertinto > 0)
    {
     messagebox.show("操作失败！请重试。");
    }
    else
    {
     messagebox.show("添加成功！");
     this.textbox2.visible = false;
    }
   }
   catch (exception ex)
   {
    messagebox.show("添加日志失败：" + ex.message);
   }
   con.close();
   selectinfo();
  }

  private void 删除toolstripmenuitem_click(object sender, eventargs e)
  {
   con.connectionstring = sqllanding;
   //从数据库删除正在点击的文件名
   com.commandtext = string.format("delete from txtbianjiqi where name='{0}'", clickrow);
   com.connection = con;
   con.open();
   dialogresult dr = messagebox.show("确认删除？", "提示", messageboxbuttons.okcancel, messageboxicon.information);
   if (dr == dialogresult.ok)
   {
    int insertinto = convert.toint32(com.executescalar());
    if (insertinto > 0)
    {
     messagebox.show("操作失误！！");
    }
    else
    {
     //file.delete(clickcells + clickrow);删除windows里的文件，括号里是要删除文档的路径。
     file.delete(clickcells + clickrow);
     messagebox.show("删除成功！");
    }
   }
   con.close();
   selectinfo();
  }

  private void 退出toolstripmenuitem_click(object sender, eventargs e)
  {
   this.close();
  }

 }
}

就是写了一个挺简单的在winform里进行填写文本，里面用到的ado.net来链接数据库，在新建文本的时候需要写入.txt后缀名，打开或者是删除的时候需要先点击一下文本名。 写的不足请见谅！

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持服务器之家。

原文链接：http://www.cnblogs.com/shigezhuang/archive/2017/08/21/7406131.html