C# 手動/自動儲存圖片的執行個體代碼

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複製代碼 代碼如下:

//手動儲存圖片
private void saveBtn_Click(object sender, System.EventArgs e)
{
bool isSave = true;
SaveFileDialog saveImageDialog = new SaveFileDialog();
saveImageDialog.Title = "圖片儲存";
saveImageDialog.Filter= @"jpeg|*.jpg|bmp|*.bmp|gif|*.gif";

if(saveImageDialog.ShowDialog() == DialogResult.OK)
{
string fileName = saveImageDialog.FileName.ToString();

if(fileName != "" && fileName != null)
{
string fileExtName = fileName.Substring(fileName.LastIndexOf(".")+1).ToString();

System.Drawing.Imaging.ImageFormat imgformat = null;

if(fileExtName!="")
{
switch(fileExtName)
{
case "jpg":
imgformat = System.Drawing.Imaging.ImageFormat.Jpeg;
break;
case "bmp":
imgformat = System.Drawing.Imaging.ImageFormat.Bmp;
break;
case "gif":
imgformat = System.Drawing.Imaging.ImageFormat.Gif;
break;
default:
MessageBox.Show("只能存取為: jpg,bmp,gif 格式");
isSave = false;
break;
}

}

//預設儲存為JPG格式
if(imgformat == null)
{
imgformat = System.Drawing.Imaging.ImageFormat.Jpeg;
}

if(isSave)
{
try
{
this.pictureBox1.Image.Save(fileName,imgformat);
//MessageBox.Show("圖片已經成功儲存!");
}
catch
{
MessageBox.Show("儲存失敗,你還沒有截取過圖片或已經清空圖片!");
}
}

}

}
}

//自動儲存圖片
private void Autosave()
{
string Opath =@"D:\VedioCapture\Photo";
string photoname = DateTime.Now.Ticks.ToString();
if (Opath.Substring(Opath.Length-1, 1) != @"\")
Opath = Opath + @"\";
string path1 = Opath + DateTime.Now.ToShortDateString();
if (! Directory.Exists(path1))
Directory.CreateDirectory(path1);
//pictureBox1.Image.Save(path1 +"\\" + photoname + ".jpg",System.Drawing.Imaging.ImageFormat.Jpeg);
//映像的縮小
System.Drawing.Bitmap objPic,objNewPic;
try
{
objPic = new System.Drawing.Bitmap(pictureBox1.Image);
objNewPic=new System.Drawing.Bitmap(objPic,pictureBoxShow.Width,pictureBoxShow.Height);
//objNewPic=new System.Drawing.Bitmap(objPic,320,240);//圖片儲存的大小尺寸
objNewPic.Save(path1 +"\\" + photoname + ".jpg",System.Drawing.Imaging.ImageFormat.Jpeg);
}
catch(Exception exp){throw exp;}
finally
{
objPic=null;
objNewPic=null;
}
}