c# Base64编码和图片的互相转换代码
将图片转化为Base64字符串的流程是：首先使用BinaryFormatter将图片文件序列化为二进制数据，然后使用Convert类的ToBase64String方法。将Base64字符串转换为图片的流程正好相反：使用Convert类的FromBase64String得到图片文件的二进制数据，然后使用BinaryFormatter反序列化方法。
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/// <summary> /// 将图片数据转换为Base64字符串 /// </summary> /// <param name="sender"></param> /// <param name="e"></param> private void ToBase64(object sender, EventArgs e) { Image img = this.pictureBox.Image; BinaryFormatter binFormatter = new BinaryFormatter(); MemoryStream memStream = new MemoryStream(); binFormatter.Serialize(memStream, img); byte[] bytes = memStream.GetBuffer(); string base64 = Convert.ToBase64String(bytes); this.richTextBox.Text = base64; } /// <summary> /// 将Base64字符串转换为图片 /// </summary> /// <param name="sender"></param> /// <param name="e"></param> private void ToImage(object sender, EventArgs e) { string base64 = this.richTextBox.Text; byte[] bytes = Convert.FromBase64String(base64); MemoryStream memStream = new MemoryStream(bytes); BinaryFormatter binFormatter = new BinaryFormatter(); Image img = (Image)binFormatter.Deserialize(memStream); this.pictureBox.Image = img; } |
