//在一个页面中添加image控件，后台指向一个新页面，在新页面获取图片的二进制流，再展现在页面上
<body>
<div
class=
"pNavigation">
<div style=
"overflow: hidden;">
<img alt=
"" class=
"img_Navigation" src=
"/Style/Images/Default/pixel.gif" />当前位置：消防设备管理
>> 消防设备图纸查看
</div>
</div>
<form id=
"form1" runat=
"server">
<table id=
"table" cellpadding=
"0" cellspacing=
"0" border=
"0" style=
"width: 100%;
margin: 0px;
">
<tr>
<td align=
"center">
<img id=
"imgphoto" src=
"~/Style/Images/Photo/nopic.gif" runat=
"server" style=
"margin: 2px;
margin-left: 12px; height: 280px; width: 222px;
" />
</td>
</tr>
</table>
</form>
</body>
protected void Page_Load(
object sender, EventArgs e)
{
try {
Model.LOGISTICS_BUILDINGEQUIPMENTPIC model = cBll.GetList(
" where t.LYH=‘" + Request.QueryString[
"lyh"] +
"‘ and t.LC=‘" + Request.QueryString[
"lc"] +
"‘",
"").FirstOrDefault();
if (model !=
null)
{
this.imgphoto.Src =
"ShowPhoto.aspx?lyh=" + Request.QueryString[
"lyh"] +
"&lc=" + Request.QueryString[
"lc"] +
"&r=" +
new Random().Next().ToString(CultureInfo.InvariantCulture);
}
}
catch (Exception exception)
{
Log.fWriterLog(
"住校管理之床位安排查看页（学生信息查看）页面初始化异常：" + exception.Message, exception);
}
}
//新页面输出图片二进制流
/// <summary>
/// 获取图片
/// </summary>
/// <param name="lyh"></param>
/// <param name="lc"></param>
protected void GetShowPhoto(
string lyh,
string lc)
{
Model.LOGISTICS_BUILDINGEQUIPMENTPIC model = cBll.GetList(
" where t.LYH=‘" + lyh +
"‘ and t.LC=‘" + lc +
"‘",
"").FirstOrDefault();
string basePath = Hzjg.Common.Config.ConfigManage.fGetAppConfig(
"SaveFilePath");
basePath = basePath.Substring(
0, basePath.Length -
1);
byte[] byteImg =
null;
//图片流
Stream stream =
null;
if (model !=
null)
{
//把文件转化为二进制流
string path = basePath + model.PICTUREPATH.Replace(
"/",
"\\");
byteImg = ConvertToBinary(path);
stream =
new MemoryStream(byteImg);
}
else {
FileStream f =
new FileStream(Server.MapPath(
"~/Style/Images/Photo/nopic.jpg"), FileMode.Open, FileAccess.Read);
byteImg =
new byte[f.Length];
f.Read(byteImg,
0, byteImg.Length);
f.Close();
stream =
new MemoryStream(byteImg);
}
var img = (Bitmap)Image.FromStream(stream,
false);
//转换成Bitmap
Response.Buffer =
false;
Response.ContentType =
"image/jpg";
Response.AddHeader(
"Content-Disposition",
"attachment;filename=photo.jpg");
//照片名称叫photo.jpg
Response.BinaryWrite(byteImg);
//写入二进制流
HttpContext.Current.ApplicationInstance.CompleteRequest();
}
/// <summary>
/// 把文件转化为二进制流
/// </summary>
/// <param name="Path">文件路径</param>
/// <returns></returns>
public static byte[] ConvertToBinary(
string Path)
{
FileStream stream =
new FileInfo(Path).OpenRead();
byte[] buffer =
new byte[stream.Length];
stream.Read(buffer,
0, Convert.ToInt32(stream.Length));
return buffer;
}
