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using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Text; using System.Windows.Forms; using System.IO; using System.Drawing.Imaging; namespace 课程作业3_b{ public partial class Form1 : Form { public Form1() { InitializeComponent(); } /// summary /// 打开图像 /// /summary /// param name=sender/param /// param name=e/param private void button1_Click(object sender, EventArgs e) { //设置文件的类型 openFileDialog1.Filter = *.jpg,*.jpeg,*.bmp,*.gif,*.ico,*.png,*.tif,*.wmf|*.jpg;*.jpeg;*.bmp;*.gif;*.ico;*.png;*.tif;*.wmf; if (openFileDialog1.ShowDialog() == DialogResult.OK) //打开文件对话框 { //根据文件的路径创建Image对象 Image myImage = System.Drawing.Image.FromFile(openFileDialog1.FileName); pictureBox1.Image = myImage; //显示打开的图片 pictureBox1.Height = myImage.Height; pictureBox1.Width = myImage.Width; this.button2.Enabled = true; } } /// summary /// 为数据表表头添加行号 /// /summary /// param name=sender/param /// param name=e/param private void dataGridView1_RowPostPaint(object sender, DataGridViewRowPostPaintEventArgs e) { try { //添加行号 SolidBrush v_SolidBrush = new SolidBrush(dataGridView1.RowHeadersDefaultCellStyle.ForeColor); int v_LineNo = 0; v_LineNo = e.RowIndex + 1; string v_Line = v_LineNo.ToString(); e.Graphics.DrawString(v_Line, e.InheritedRowStyle.Font, v_SolidBrush, e.RowBounds.Location.X + 15, e.RowBounds.Location.Y + 5); } catch (Exception ex)