addpicture.cs

ADO数据库操作+DataGradView控件

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;

namespace AddEditDeleteDataGridView
{
    public delegate void SaveByte(byte[] PicByte);
    public partial class AddPicture : Form
    {
        public byte[] Content;

        private System.Windows.Forms.DataGridViewCell Curcell;
        public AddPicture(System.Windows.Forms.DataGridViewCell cell)
        {
            InitializeComponent();
            this.Curcell = cell;
        }

        private void label1_Click(object sender, EventArgs e)
        {

        }

        private void ShowDialogCmd_Click(object sender, EventArgs e)
        {

            this.openFileDialog1.FileName = ""; 
            this.openFileDialog1.Filter = "Image Files(*.BMP;*.JPG;*.GIF)|*.BMP;*.JPG;*.GIF|All files (*.*)|*.*";
            if (openFileDialog1.ShowDialog() == DialogResult.OK)
            {
                this.PicNameTxt.Text = openFileDialog1.FileName;
            }

            //用文件的路径信息创建一个文件对象 
            System.IO.FileInfo MyPicture = new System.IO.FileInfo(this.PicNameTxt.Text);
            //检查文件的存在性 
            if (!MyPicture.Exists)
            {
                MessageBox.Show("文件不存在!");
            }
            else
            {

                //创建一字节数组,用来存储图像文件.(数组的长度是图像文件的长度) 
                Content = new byte[MyPicture.Length];
                //打开文件并用他初始化一个文件流对象 
                System.IO.FileStream ImageFileStream = MyPicture.OpenRead();
                //将文件内容写入字节数组 
                ImageFileStream.Read(Content, 0, Content.Length);
                //关闭文件流 
               
                this.ShowPicBox.Image = Image.FromStream(ImageFileStream);
                 ImageFileStream.Close();
                //用Content存储

            }
        }
        //保存数据到UserGridView
        private void button1_Click(object sender, EventArgs e)
        {
            this.Curcell.Value = this.Content;
             
        }

        
    }
}