private void link_save_img_LinkClicked(object sender, LinkLabelLinkClickedEventArgs e)
{
Bitmap imageBitMap = null;
string base64 = text_base64_box.Text;
if (!String.IsNullOrEmpty(base64))
{
// 优先保存base64原图
imageBitMap = ImageBase64Utils.toImage(base64);
}
else if (picture_box.Image != null)
{
// 其次保存pic控件上的图
imageBitMap = new Bitmap(picture_box.ClientRectangle.Width, picture_box.ClientRectangle.Height);
picture_box.DrawToBitmap(imageBitMap, picture_box.ClientRectangle);
}
if (imageBitMap == null)
{
MessageBox.Show("没有图片可以保存。", "错误", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
SaveFileDialog save = new SaveFileDialog();
save.FileName = string.Format("{0:yyyyMMddHHmmssffff}", DateTime.Now);
save.Filter = "(.png)|*.png";
if (save.ShowDialog() == DialogResult.OK)
{
//GDI+ 中发生一般性错误解决方案：将imageBitMap拷贝到tempBitmap中
Bitmap tempBitmap = new Bitmap(imageBitMap.Width, imageBitMap.Height);
Graphics draw = Graphics.FromImage(tempBitmap);
draw.DrawImage(imageBitMap, 0, 0);
save.Dispose();
draw.Dispose();
imageBitMap.Dispose();
tempBitmap.Save(save.FileName, System.Drawing.Imaging.ImageFormat.Jpeg);
setStatusText("图片已保存——>" + save.FileName);
}
}
private void btn_base64_to_img_Click(object sender, EventArgs e)
{
string base64 = text_base64_box.Text;
if (String.IsNullOrEmpty(base64))
{
MessageBox.Show("请先填写Base64编码。", "错误", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
Bitmap bitmap = ImageBase64Utils.toImage(base64);
if (bitmap != null)
{
picture_box.Image = bitmap;
}
setStatusText("Base64编码 ——> 图片 已完成");
}
private void btn_img_to_base64_Click(object sender, EventArgs e)
{
OpenFileDialog dlg = new OpenFileDialog();
dlg.Multiselect = false;
dlg.Title = "选择要转换的图片";
dlg.Filter = "图像文件(*.jpg;*.png;*.gif;*.bmp)|*.jpg;*.png;*.gif;*.bmp";
if (DialogResult.OK == dlg.ShowDialog())
{
string imageFilePath = dlg.FileName;
picture_box.ImageLocation = imageFilePath;
String base64 = ImageBase64Utils.toBase64(imageFilePath);
if (!String.IsNullOrEmpty(base64))
{
text_base64_box.Clear();
text_base64_box.Text = base64;
}
}
dlg.Dispose();
setStatusText("图片 ——> Base64编码 已完成");
}
