給圖片添加著作權資訊

Bitmap bitmap=new Bitmap(this.pictureBox2.Width,this.pictureBox2.Height,System.Drawing.Imaging.PixelFormat.Format24bppRgb);

//根據位元影像擷取畫布

Graphics g=Graphics.FromImage(bitmap);

//清空畫布並用透明色填充

g.Clear(Color.Transparent);

//將另一幅圖片畫到畫布上

g.DrawImage(this.pictureBox1.Image,0,0);

//寫著作權資訊到圖片上。

g.DrawString(this.textBox2.Text,new Font("黑體",15),new SolidBrush(Color.Red),new Rectangle(20,20,100,100));

//顯示

this.pictureBox2.Image=bitmap;

//儲存圖片

bitmap.Save("c://abc.bmp",System.Drawing.Imaging.ImageFormat.Bmp);

 

       順便帖一下“選擇”按鈕的單擊事件程式：

private void button1_Click(object sender, System.EventArgs e)

        {

            if(this.openFileDialog1.ShowDialog()==DialogResult.OK)

            {

                if(this.openFileDialog1.FileName.Length==0)

                {

                    MessageBox.Show("請選擇圖片","錯誤",MessageBoxButtons.OK,MessageBoxIcon.Error);

                    return;

                }

                this.textBox1.Text=this.openFileDialog1.FileName;

                FileStream fs=new FileStream(this.openFileDialog1.FileName,FileMode.Open,FileAccess.Read);

                try

                {

                    this.pictureBox1.Image=Image.FromStream(fs);

                }

                catch(Exception)

                {

                    MessageBox.Show("您選擇的檔案不是可識別的圖片格式","錯誤",MessageBoxButtons.OK,MessageBoxIcon.Error);

                }

                finally

                {

                    fs.Close();

                }

            }

        }