简单的winform编辑器_.NET_编程开发_程序员俱乐部

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！