图像在数据库中上传 [英] image uploading in database

问题描述

我想在html页面上使用javascript上传图片，并希望将Wcf中的图像转换为存储在数据库中

i want to upload the image using javascript on html page and wants to convert the image in bytes in Wcf to store in database

推荐答案

以下两种帮助方法应该能够做到这一点：

public BitmapImage ImageFromBuffer（Byte [] bytes）

{

MemoryStream stream = new MemoryStream（bytes） ;

BitmapImage image = new BitmapImage（）;

image.BeginInit（）;

image.StreamSource = stream;

image.EndInit（）;

返回图片;

}



public Byte [] BufferFromImage （BitmapImage imageSource）

{

流stream = imageSource.StreamSource;

Byte [] buffer = null;

if（stream！= null && stream.Length> 0）

{

using（BinaryReader br = new BinaryReader（stream））

{

buffer = br.ReadBytes（（Int32）stream.Leng th）;

}

}



返回缓冲区;

}



我没有完全测试这两种方法，但同样的概念应该是真的。



希望这有助于

The following two helper methods should be able to do the trick:
public BitmapImage ImageFromBuffer(Byte[] bytes)
{
MemoryStream stream = new MemoryStream(bytes);
BitmapImage image = new BitmapImage();
image.BeginInit();
image.StreamSource = stream;
image.EndInit();
return image;
}

public Byte[] BufferFromImage(BitmapImage imageSource)
{
Stream stream = imageSource.StreamSource;
Byte[] buffer = null;
if (stream != null && stream.Length > 0)
{
using (BinaryReader br = new BinaryReader(stream))
{
buffer = br.ReadBytes((Int32)stream.Length);
}
}

return buffer;
}

I don''t fully test the two methods, but the same concept should be true.

Hope this helps

这篇关于图像在数据库中上传的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！